If it's gone you know you removed the bad tube. I bought a smaller cube amp for 5 dollars that did not work. Good restoration project or lawn ornament. Not really a bedroom amp, more of a don't-need-to-mic club amp. The guitar cord, which carries the signal from the guitar to the amp is a more likely culprit as a poorly shielded cable would act as an antenna, with the radio signal being amplified by the pre-amp. This simple, inexpensive spring tank reverb circuit is taken from the Fender Hot Rod Deluxe. I'm trying to add a 4 channel amp to my factory stereo along with the sub and I can get the 4 channel amp to turn on but once I connect the speaker wires in the back of the amp it turns off both amps. Then simply connect your guitar direct to the instrument input on the interface. Fender Guitar Amplifier Parts. I had an ABY switch that was made from fender and when it got close to my Marshall JCM 2000 TSL 100 it did make a lot of noise. If you still have questions, please call us at 1-800-432-3738 or email us at [email protected] ONe half of the tube in V4 is the reverb return triode. The Acoustic series provides amplification for acoustic instruments and includes microphone and play back channels for the all in one amplifier and PA system when needed. NORMAL jack Plugging your guitar into this input will route your signal through the NORMAL channel. For the best results, use a clean setting on your amp. I just got a 50 watt tube combo that seems relatively quiet. Try a new rectifier tube. Easy to replace , just don't use a guitar cord for a speaker cord , they are NOT the same thing. U2 Receiver Since U2 is the 2. switch between two guitars using one amplifier or two amplifiers with one guitar) Programmable latching/non-latching modes selectable for both channels:---Non-latch mode momentarily engages the switch while you hold down the pedal. If this works, (stereo sound, both speakers working) than swap out the amp and test the other the same way. Terms of Use. Laney Guitar Amplifiers Channels 1. Our premium 6-channel audio interface. This simple, inexpensive spring tank reverb circuit is taken from the Fender Hot Rod Deluxe. It also includes switch functions that allow your FCB1010 presets to also control non MIDI gear (like the channels on your guitar amp) that can be controlled by 1/4" sorting jacks. It is an excellent item for vocal amplification, or for use with pre-recorded music from an mp3 player, it has a pretty design, it's simple and… well, it's exclusive (you have to be a well-known. Hi All, Here's a mystery for anyone to try and figure out. 7mA, right channel 62mA. it just shows a grey screen. Go to the guitar shop, plug one of these in and throwdown to see if it is what you are looking for. AMP TYPE — When channel 1 is selected on the Super Champ X2, only the "Fender Clean Channel" amp model is available. of Channels. for some reason, i can't get one of my channels to come on. Not really a bedroom amp, more of a don't-need-to-mic club amp. With 4 separate stereo input channels, you can hook your guitar, keyboard, drum machine and vocals (with the XLR input), while wisely using a separate amp for the bass. The output results in two channels which are identical except one channel is the inverse of the other. Easy to replace , just don't use a guitar cord for a speaker cord , they are NOT the same thing. This could be the melted coil wires shorting to the gap or a broken wire that makes contact when the coil is moved enough by the music. Global website of Yamaha Corporation. At this point, you’d realize that the lack of dynamic range is not entirely a result of having a master-volume control in the circuit. This isn't a channel switching amp. Featuring 12AX7 pre-amp tube and EL84 power tube for the purest tones an 8-inch speaker can provide. When connecting an rca y adapter from sub pre out to just the rca white on the woofer the bass sounds just. It has 1/4 inch inputs for your instrument. IF the noise is there, too, then the problem very likely is past the preamp and may very well lie in the power tubes and/or that part of the amp. Note: If you have a copy of an old Fender instrument owner's manual not shown in this archive, we'd love to have a copy to post here. Here are a couple of common problems and what should be possible to investigate, and also settle them (my fixes are the most common. Yes, the MG10XU cannot record individual input channels directly to the USB ports. Plug the guitar into the the DI input, connect amp A to DI through and amp B to DI coupled together (directly or though the transformer in the DI box) will be different , 11 Sep 2019 Simply connect the left output of the effect to the input of one amp and the right Marshall and Fender often work well together, as does the high-end of a Vox If. We can deliver for an extra fee. switch between two guitars using one amplifier or two amplifiers with one guitar) Programmable latching/non-latching modes selectable for both channels:---Non-latch mode momentarily engages the switch while you hold down the pedal. In your case, I would get 2-3 pedals as a start and something versatile that would allow you to dial in a wide range of different tones but authentic enough to be inspiring. He stopped by the party, which was being organized by the DJ collective Uptown Vinyl Supreme, and spotted his friend Jon P at the chef’s helm. I own an AVT 2000 valvestate guitar amp +/- 15-20 years old and lost the cable in a move to connect the footswitch to the amp. These are signs that a tube is failing. Using only one amp correctly hooked up as you describe, the right channel doesn't work. He's also a hardcore DIY-er for guitars, amps, and stompboxes and runs a website on the subject (singlecoil. Power on the amplifier and play a signal through to the speaker to make sure everything is in proper working order. Although the solid-state GA-15 practice amp is still a fixture of the catalogue, the DG series modelling amplifiers have long since been discontinued, and you'd have to go back to the valve-powered T50 and T100 designed by Mike Soldano in. I would like to bring out my electric guitar at some point, but only want to use a single amp for simplicity. You'll know it's not working because the current values you'll be reading will be much too low no matter how far you adjust the bias pot, the tubes will be glowing hot, and when you note that you'll reach quickly for the power switch! If you don't reach it quickly enough, you might blow a fuse. This is a rare tractor with the rear steel wheel attachments. The "Power Amp In" bypasses the Shiva's preamp, you can still use the Master volume and Presence controls since these controls are part of the power amp circuit. telsein New Member Posts: 1 Joined: Thu Apr 30, 2020 2:06 pm. ” When you click the button, the audio from all the other channels will continue going through the mixer while the selected channel will be quiet. I have my Guitar plugged into the microphone input on the front of my PC, so is it because Guitar Rig is not meant to be used with the Mic input?. neewer 1 channel 48v phantom power supply w adapter f any condenser mic 8 feet ebay. To get your keyboard to make a sound you will need to ‘arm’ the track. com is committed to making its digital experience accessible to all people by meeting or exceeding the requirements of the Web Content Accessibility Guidelines (WCAG) set by the Worldwide Web Consortium (W3C). There is something about the glow of hot glass and the imposing sight of weighty iron through the grille that seems to sum up so much of what's cool about the electric guitar. Learn more How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”. Designed for musicians, DJs, and general PA use, the S1 Pro is the ultimate all-in-one PA, floor monitor, practice amplifier and primary music system. it just shows a grey screen. Just a few doors down from Kroger. We are talking about the sound of a high quality tube amp, turned up loud, and mic'd up professionally in a suitable acoustic space. That is,of course,no longer the case. A high-powered hi-fi amp of around 50 watts per channel is fine for home recording, but to ensure adequate head-room you should consider a well-specified rack mount amp. I've never had any real work done on an amp and I know this is an extremely general question, but I've got a Mesa Tremoverb head. It features. Often power loss that seems like the amp is performing at half power or less will be one or more bad power tubes, or even a dying phase inverter tube. If your filaments/tubes aren't lighting up, you're probably not getting any voltage to them which could be a blown fuse, burnt resistor, bad transformer filament voltage connection, but a loss of voltage or ground for the filament voltage supplie. The amp volume is sufficiently up. com is committed to making its digital experience accessible to all people by meeting or exceeding the requirements of the Web Content Accessibility Guidelines (WCAG) set by the Worldwide Web Consortium (W3C). The open loop voltage gain of an operational amplifier with no feedback is Infinite. For the purposes of troubleshooting, you can install a new set without re-biasing the amp, but if they are indeed the cause of the noise then you should definitely take the amp in for biasing. VocoPro is a California-based professional audio company that was founded in 1991. Audio amplifiers are available in a range of forms, according to the task they are designed to perform. By design, all Katana amps feature an instantly familiar interface that makes it easy to dial in and save great sounds on the fly. 7mA, right channel 62mA. The Acoustic series provides amplification for acoustic instruments and includes microphone and play back channels for the all in one amplifier and PA system when needed. The days of playing strictly through a guitar amp on stage are fleeting. Ho does not recommend strapping two amplifiers together to provide more power. There are two basic types: 120Hz buzz, typically caused by ground loops, and 60Hz hum. As I've mentioned in previous articles dealing with the subject, two amps are always better than one. Will I Damage the Guitar? Absolutely not. switchable) Mono input and a stereo Output, and the unit is powered by dual 9v batteries, or by a regulated power supply…like the Big John or the Pro Power (both by Carl Martin). Solid State Spring Reverb. 00 *** Sold *** (Drum, Percussion). Solo button for. When I connected it for the first time it didn't play a sound at all. Order by Phone or call for questions about your Peavey. Check your patch leads with a cable tester, and go through each pedal individually to see what could be causing the problem. I often do coffee-house type performances using an acoustic guitar, a shure sm-58 mic, and a 2-channel Ultrasound AG50 acoustic guitar amp. The amp "sees" the resulting signal as the same input voltage and it could be controlled with the amps input level control, but that is not all that is going on in the case of the preamp. The latest Tweets from Noah (BCE/Aegean) (@BCETracks). 00 89 product ratings - Fender Champion 20 20W 1x8" Single Channel Guitar Combo Amplifier Practice Amp. Plug headphones into the mixer and then hit the SOLO/PFL button on the guitar channel. When the tube fails, you see this beyond any doubt. Anyway if you need to have a regulated one please inform me. Fender® Guitar Amplifier Owner's Manuals (Current) This article contains a list of all Fender® Guitar Amplifier owner's manuals currently available. If you only provide large-fiber bread into the home, you will not be tempted to eat the refined white-flour French bread that you did not acquire. Clean tones are delivered with ample headroom before smoothly transitioning into rich, crunchy, British overdrive. The 'Bright Cap' C4 bypasses high frequencies around the Bright Volume control to boost the Bright Channel's highs when playing at lower volume. 7-inch deep. wav files contained in the directory where the last impulse is loaded. Re: Need an Amplifier Repair Expert: Crate Amp Posted by Rich Klatt on Sat, 10/19/2002 - 02:03. If you still have the symptom, you should next replace the output tubes. Model between 1954-56. If you do, then it's a gain/trim issue and just turn up the gain. Ohms are the measurement units of a device's resistance to the electrical pressure (volts) exerted through its input, resulting in output power measured in. If you can isolate the issue to one part of the preamp, then the Tube Task Chart found on the sidewall of your cabinetry or in your Owner’s Manual may indicate which tube or tubes are specific to that channel or function. The Monitor Source switch sends a choice of pre-amp only, computer playback only or 50/50 mix of both to this. Here is the one using the fewest extra cables: 1. The TA-10, he says are "no problem" with 4 to 16-ohm loads. Fender Play is the complete app for learning to play acoustic and electric guitar, bass and ukulele. If you own an Eleven Rack interface, we will continue to offer product support, so you can continue playing and creating with peace of mind. Plug the guitar into the the DI input, connect amp A to DI through and amp B to DI coupled together (directly or though the transformer in the DI box) will be different , 11 Sep 2019 Simply connect the left output of the effect to the input of one amp and the right Marshall and Fender often work well together, as does the high-end of a Vox If. Re: Amp lost its volume « Reply #10 on: February 11, 2011, 03:05:21 AM » well what's weird is the loop and pedals are still working. This can be seen on the channel level, mixer level, and even the amplifier level. Connect the amp to a working pair of speakers. What looks on the surface as a worthless amp though. The best way to think of this mixers USB port is as a stereo output. The power amp has one channel not working. Please note: Pro Tools | Eleven Rack has been discontinued. You're probably reducing your signal level doing this, definitely more so with an active instrument. I just got a 50 watt tube combo that seems relatively quiet. When one or more solo buttons are engaged, only the solo'd channels are heard in the headphones. Experiment with different value pots to see which ones work best for you. There were. Most guitar cabinets take 10-inch drivers that are rated at 100 watts or higher. Tight and Smooth filters (Hi-Pass/Low-Pass), selectable Pre and Post amp. In a high gain guitar amp the clean channel may be distorted and overdrive channels will be extremely distorted and unusable. Poulin LeCab2 by LePou Plugins (@KVRAudio Product Listing): LeCab2 is the evolution of LeCab1. That will not work, or if it works at all, it will shorten the life of your amp. Now and then the amp itself truly is to blame. With 4 separate stereo input channels, you can hook your guitar, keyboard, drum machine and vocals (with the XLR input), while wisely using a separate amp for the bass. What looks on the surface as a worthless amp though. UPDATE-MARCH 4 2019-After having amp and getting used to it I discovered that one channel did not work. Choose from 13 classic amp models like the ‘59 Fender Bassman, Diezel Herbert Channel 2, Marshall JCM800, Fender Twin Reverb, and MESA Boogie Mk3 , all newly and faithfully created to be adjusted exactly as you would with the knobs and switches of the real thing. Take any guitar cable (short effects jumpers work best) and “jump” the loop—plug one end into the send jack and one into the return jack. The Blues Deluxe is pretty different than a vintage Fender. The L/R outputs are line level, which is how the input on the keyboard amp is designed to take. If you still have questions, please call us at 1-800-432-3738 or email us at [email protected] DSL40C's Ultra gain channel stopped working So I'm not entirely familiar with the possible symptoms of a tube amp, so I have no idea what is causing this to happen to my Marshall DSL40C. In Hong Kong! It is open to the public. Watch your favourite shows online, from Channel 4, E4, All 4 and Walter Presents. But I have few problems to figure out how. It has two 1/4 inch outputs for 8 & 16 ohms speakers. Please click here to the Product Site of your country or region. Often power loss that seems like the amp is performing at half power or less will be one or more bad power tubes, or even a dying phase inverter tube. It takes in a weak electrical signal/waveform and reproduces a similar stronger waveform at the output by using an external power source. 4: The Replacement Speaker. Order by Phone or call for questions about your Peavey. If the amp allows it, swap chips among the channels one at a time. All seems to be going smoothly except for one channel which refuses to work. Read specs carefully or call us at 877-880-5907 if you have questions. I have a old amplifier it's a Sears LXI series Model AM 4023. Whereas most portable electronics are powered by a 1. Plug the guitar into the the DI input, connect amp A to DI through and amp B to DI coupled together (directly or though the transformer in the DI box) will be different , 11 Sep 2019 Simply connect the left output of the effect to the input of one amp and the right Marshall and Fender often work well together, as does the high-end of a Vox If. This amplification is achieved in one or more of the following ways: Some microphones have tiny built-in amplifiers which boost the signal to a high mic level or line level. Hear what guitar greats Paul Sidoti, Nita Strauss, Orianthi, and Richie Kotzen are saying about Roland's new CUBE-GX guitar amplifiers and CUBE JAM app. Buy online or at your local store today!. Distortion is an important part of guitar amplifier design and this is the primary difference between guitar and audio amplifiers. Make sure you follow the instructions with your audio interface. telsein New Member Posts: 1 Joined: Thu Apr 30, 2020 2:06 pm. This article does not include more recent “Master Volume” and JCM models. Our products include award-winning digital audio workstations for PC, fully-integrated music making software and recording hardware, and innovative soft-synth virtual instruments for PC and Mac. For parts or not working (11) Items (11) Not Specified (5) Items (5) see all. A problem in one channel but not the other. Clean amp with a rich, creamy tone at a low volume. I just checked them and I did crank. It’s not turned on yet. Next, I took the fuse I tested in it and plugged it back into a working amp of the same model, which ran fine (so I know the amp isn't just killing fuses). John Tomas (Ruidoso, NM USA). When you check the RCA & Amp AC voltage make sure to use a test tone. Try to play the guitar in each amp using the same cable. Running a solid state amplifier without a load is not a problem. Tube noise such as sputtering, hissing, popping can be tougher to find in a guitar amplifier. Welcome to the vintage Kustom amp site, VintageKustom. Vox Guitar Amplifiers Channels 1. The volume knobs and tone knobs usually have to be turned to at least one or higher for the bass amp to produce sound. For example, I often record lead guitar using a close capacitor mic, a close dynamic, a second capacitor mic about six feet back from the speaker cabinet, and a line out from the back of the guitar amp. No hassles. From your description, it seems that the circuitry which detects whether or not there is audio signal coming in is faulty. Pair your amp with one of the 13 newly-created. If you never run two simultaneous inputs into one channel you may want to reduce the value of the grid stopper resistors. Power on the amplifier and play a signal through to the speaker to make sure everything is in proper working order. m audio axiom 25 usb midi controller reverb. Brainworx has become famous for their fantastic UAD-2 amp emulations. the buffers in a PIMETA or PPAv1, or the op-amps in a PPA. The Dual Amp/Cab Method. If the amplifier and the cable work with another guitar, there is really only one other possible source for your problem: the ¼ inches jack connections. Use just one hand when working on a powered amp. View and Download Art Tube MP Studio V3 user manual online. co/7u0pnh1bdG. Issues with Win 7 and Fender guitar amp I have an HP tower with BeatsAudio, running Windows 7 Hojme Premium. Angel, Yes you can run four speakers with a 2-channel amplifier, but you'll lose the ability to "fade" your music from front to rear. Most people are happy to speak of an 8 ohm amplifier, if they think not correctly that the amplifier output should be connected to "8 ohm speakers". Commonly, multi-channel amplifiers will have multiple stereo ¼" inputs for keyboards. Our premium 6-channel audio interface. In such setting, the laptop's built-in mic is still active and the sound from the pre-amp is not recorded via line-in. The Monitor Source switch sends a choice of pre-amp only, computer playback only or 50/50 mix of both to this. Each channel on the mixer has an independent volume control so you can blend the sound level of the vocal to be the perfect match for the guitar volume. Plug the guitar into the the DI input, connect amp A to DI through and amp B to DI coupled together (directly or though the transformer in the DI box) will be different , 11 Sep 2019 Simply connect the left output of the effect to the input of one amp and the right Marshall and Fender often work well together, as does the high-end of a Vox If. Solo is taken pre-fader, so the level of the channel fader or mute button status does not affect the level heard in the headphones. The "California (Tone Research) SET-5" guitar amp is a low priced 5W, A class, genuine all tube guitar amp. My Motherboard is new. In some amps there are two fuses per channel and if one of the pair blows it will produce distorted sound. If the supplies are good and all the passives are good, but it's still not working, it's time to signal trace. 25V or higher rating. Trends Audio does have a retail showroom. You're probably reducing your signal level doing this, definitely more so with an active instrument. The classic gain channel has no apparent problem, but when I switch over to ultra gain, nothing comes out when I play. Not Specified. Depending on the quality of your amplifier, an external component may be better quality than the one that comes with your amp. FAST 'N FREE. Set the amount of gain you will use for each channel as many guitar amplifiers have more than one channel. Tone Settings: One-Touch Recall of Custom Amp and Effects Setups. The amp volume is sufficiently up. The line was getting too long for John to manage alone. Skip to main content Skip to footer site51393256932467 site51393356575348791048 New J07338 Harbinger M60 60W, 4-Channel Compact Portable PA with 10" Speakers site51393256932467 Guitar Center: Shop for Gear. not return to the ring (input), which breaks the loop and does not allow signal to flow through the rest of the channel. It could be a faulty lead, a broken patch lead or a loose connection on another pedal. If you have a spare tube of the same type it’s good to substitute it in place of one in your amp and then listen for the noise. Tube noise such as sputtering, hissing, popping can be tougher to find in a guitar amplifier. All Articles; Tutorials; News. The Shure SM57 is one of the most widely used mics for guitar amps, but some other favorites include Sennheiser's e609 Silver, e906, and MD 421 II; Audix's i5; Royer's R-121. In this article, we’ll show you how to resolve audio interface issues on your Windows PC. (Dario Capriotti ([email protected] So now you know what all the fancy buttons do on each channel strip, and it’s not that complicated after all. If not, check amplifier bias voltages and other relevant circuit voltages. Similarly, a pair of accurate hi-fi speakers will do the job, but for more serious work we would recommend purpose-designed nearfield monitors. Bright - Hi Input. 16 track album. On the other hand, you have much more control over a subwoofer than you do over the bass output in a full-range system. MIDI spec allows 16 MIDI channels per MIDI port, and Play allows you to select a MIDI port, MIDI channel and audio output for each loaded instrument -- so the configuration is up to you. If you are already running in mono and don't have enough amplifiers, try dispensing with the subs and restricting the PA to vocals. Amplifikation Lite is one of the amps that comes with the Amplifikation One guitar simulation software by Kuassa, which incidentally you can also try out for free, but there will be sound played every 40 sec. 1: Author’s prototype of Two-Channel Wireless Audio Amplifier Circuit and working. The clean channel can get close to a blackface, but can honk too. Not really a bedroom amp, more of a don't-need-to-mic club amp. For most people, 50 watts will be more than enough, and Denon's least expensive receiver, the AVR-1513, is rated at 110 watts per channel. With an active speaker system, one will often see “active speaker” with “bi-amp” or “tri-amp” scenario, referring to active crossover and two or three separate amplifiers for the. I've seen this Marshal Valvestate at work, cant remember what model. With 125W per channel (8 ohms, 20Hz-20kHz, THD: 0. The number of channels on an amp doesn't limit it to the number of speakers you have connected, but impedance (ohms) and the frequency being sent to specific speakers does. Enjoy, Ray. So it's more common to use a specific acoustic guitar amp but it's not uncommon to use an electric guitar amp either. One of the Katana-50’s most powerful features is the ability to store favorite amp channel and effects setups in Tone Setting memories for instant recall. Type #'s refer to the 117V/60Hz standard US issues. In 1957 the model name was changed to 'Skylark'. Support for Fender instruments, amplifiers, audio, and accessories. CUBE Series Artist Impressions. High frequencies are the first to go to ground; therefore a lower value pot will allow more of these frequencies to pass to ground, rather than out to the amp as a part of the guitar's signal. DL1608 is compatible with iOS 11 or later, Android OS 6 or later, macOS 10. To reiterate, the amp turns on (jewel light lights up), the channel lights do not turn on and channels do not change, no sound except for a low level hum that can be turned down with the master volume. Thanks to the 2 peeps that answered question. This amp is a favourite among circle-show performers - indeed, many will tell you that this is one of the best amps for busking on the market. 1968 JMP Super PA, 100W head. That knob seems to have no effect other than it pops and activates the "clip" diode when you turn it to the right or left, which in turn cuts off the entire signal for about 3 seconds. Do you have ready made Pcb’s for all these. #Subwoofer #Amplifier #SoundSystem. Because an electric guitar is passive, its signal does not have enough power to drive the power amp directly. 60 watts of analogue tone The Crush Pro Series marks our first foray into the realm of high powered, stage-ready solid state amplifiers. To set up the Octa-swtch, plug up to eight pedals and amp(s) into the appropriate inputs/outputs on the back of the pedal. Page 1 OWNER'S MANUAL Congratulations! You are now the proud owner of the Crate GFX-15 guitar amplifier. Salem, OR. I think your best choice would be les paul numbered knobs or some 'custom' ones. If not, check amplifier bias voltages and other relevant circuit voltages. I am customizing one strat and have some spare knobs at hand. Crate began manufacturing amplifiers in the late 1970s. Page 6 AVT50 1x12" Combo & AVT50H Head Front Panel Features Input Jack Socket Clean Tone Controls This is where you plug your guitar into the The AVT50 Clean Channel is equipped amp. The guitar channel has anti-feedback control, and delay, chorus and reverb, while both have their own 3-band EQs. Fuse replaced, and we have used it a lot of a couple of years, but it was completely dead when I purchased it. ABOUT KUSTOM All of us at Kustom Amplification are proud of what we do. Made in Japan: Condition: Used " All good except for Technics Home Audio Amplifiers & Pre-Amps Channels 2, 3 Channel Guitar Amplifiers, Technics Home Audio Power Amplifiers-Amps Channels 2, Technics Amplifier Su X,. The low channel does not work but that does not affect the value of this amp because the high channel is all you need. If the amplifier and the cable work with another guitar, there is really only one other possible source for your problem: the ¼ inches jack connections. Philip McKnight demystifies the effect loop in this video. Alfred 92,384 views. For most people, 50 watts will be more than enough, and Denon's least expensive receiver, the AVR-1513, is rated at 110 watts per channel. I think your best choice would be les paul numbered knobs or some 'custom' ones. Tube power amplifiers are usually rated for the power you actually need and will use, like 8 to 80 watts per channel. Watts come cheaply nowadays; sound quality can get. Eventually spotted that one half of the first pre valve wasn’t heating (swapping valves to check it, used one with a more visible filament. This guitar effect pedal is designed to provide ease of use in a multi-effect design. Double-check the volume and tone controls on the amplifier and on the bass guitar. Great features available on the subwoofer plate amplifiers at Parts Express can include auto on/off, high and low level inputs, balanced and unbalanced inputs, DSP, adjustable crossover frequency, and more. Troubleshoot the amp. For one side, I get 33 but for the other, it will not register. Used Pampa’s $50 for sale in Edmonton - Pampa’s $50 posted by Car in Edmonton. At Alesis, while our products range from keyboards, synthesizers, hard disk recorders, iPod recording and playback devices, electronic drums, mixers, signal processors, effects units, amplifiers and speakers one thing remains consistent; our passion for inspiring musical creativity and innovation through new technology. In most cases, these different levels should not cause concern. It cost me $241 ( with original foot switch) overnighted from NYC to the Colorado high country. In 2003, Schertler launched an original series of compact amplifiers – the Classic Series. You likely already have this feature on your amplifier and may not realize it. Great recording amp and a great investment piece. Choose from 13 classic amp models like the ‘59 Fender Bassman, Diezel Herbert Channel 2, Marshall JCM800, Fender Twin Reverb, and MESA Boogie Mk3 , all newly and faithfully created to be adjusted exactly as you would with the knobs and switches of the real thing. I'm assuming that the dead channel is Channel-2, the one with the Fx loop. Sometimes the easiest fix is easy to overlook. A low noise, low microphony 12AX7 or ECC83 tube is recommended here. Assuming that you do not want process the sounds of the GR_55 with the GT-100 but want to use to process the sound of your guitar, there are a few different ways you can do this.  Plug your guitar into the vibrato channel, then unplug the reverb return cable on the back of the amp (the one that comes from the reverb tank output) and plug it into the normal channel input. For instance, if you're using two 8 ohm, 1000 watt speakers, you'll need two 8 ohm, 1500 watt power amps, or a single 8 ohm, 2-channel 3000 watt power amp. And not the Paul Gilbert kind of Technical Difficulties… Broken cables and guitar wiring are no mystery to you. This is a two channel amp, one channel is that of a 1987 Lead amp and the other channel is that of a 1986 Bass amp, making it quite a versatile amp. It's always possible that you'll find a bug in it, and I know thatthere are some situations that aren't covered, although I believe that over 90%of bugs are. Hey, you even took it one step further and started your own guitar pedal repair. is one of the largest makers & suppliers of musical instruments, amplifiers & professional audio systems worldwide. The problem is that the computer will not recognize my Fender guitar amplifier as a sound recording (input) device. If the reverb is 'working' and if the amp is producing sounds, the 12AT7's are 'working'even if there is a screeching noise. Ho does not recommend strapping two amplifiers together to provide more power. This amplification is achieved in one or more of the following ways: Some microphones have tiny built-in amplifiers which boost the signal to a high mic level or line level. I think I'm more comfortable using a single channel amp and using my guitar volume and pedals. ( MSI B250M Mortar Arctic) Still my RAM sticks not working together. Hear what guitar greats Paul Sidoti, Nita Strauss, Orianthi, and Richie Kotzen are saying about Roland's new CUBE-GX guitar amplifiers and CUBE JAM app. Guitar Center is the world's largest musical instruments retailer. There are a number of reasons to get a preamp: It can boost a low signal It can clean up a signal so that it sounds better coming through the amp. ABOUT KUSTOM All of us at Kustom Amplification are proud of what we do. The 2000 Series started with the two-channel Dual Super Lead then evolved into the new three-channel Triple Super Lead. Since that time, Crate amplifiers have become won a lot of respect and admiration in the guitar world. Use standard instrument cables to connect your pedals to your effects loop, the same type used to connect your guitar to your amplifier. There were. The beauty of SoundTouch systems is that they're made to grow with you. Featuring a THX AAA&tra. In sum, this design can lead to better musical reproduction – especially when the amplifier is pushed hard. Spray a bit of electronic contact cleaner into each jack (I prefer with lubricant, if possible). The classic amplifier balance control is a "dual log-antilog" potentiometer. NORMAL jack Plugging your guitar into this input will route your signal through the NORMAL channel. Signal tracing will often lead to bad semiconductors- check semiconductors in stages where the signal becomes faulty. I recently bought an Idiopan steel tongue drum which has a pretty rudimentary pair of pickups in it which can be played through a bass/guitar/keyboard amp - connects via 1/4 jack just like a guitar. Faulty phase inverter If for some reason the phase inverter input side is good but the inverted side is bad, the power amp will still work, but power will be very low. Make sure you follow the instructions with your audio interface. Musical peaks in the left channel do not steal power from the right channel and compromise dynamics. Plug the guitar into the the DI input, connect amp A to DI through and amp B to DI coupled together (directly or though the transformer in the DI box) will be different , 11 Sep 2019 Simply connect the left output of the effect to the input of one amp and the right Marshall and Fender often work well together, as does the high-end of a Vox If. Earlier this week I heard a crackle or popping noise coming from my speakers. If you have another amp, try the guitar and guitar lead into this amp to check the guitar and lead are functioning correctly. Privacy Policy. co/vleKHR1Q4Y for video game music, especially Sonic the Hedgehog and Earthbound 🎸 #. IF the noise is present, turn that channel down and turn the other channel up. However, it is improbable. After all this, no change in nature of the issue. The mic can be fed through a small boosting amplifier, often called a line amp. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. To Swedes, late June is synonymous with Midsummer, a solstice festival with roots in ancient, pagan Europe that was later combined with the June 24. Nady 4W-1KU GT Quad True Diversity 1000-Channel Professional UHF Wireless System with 4 Guitar/Instrument Bodypacks– AutoScan – Automatic Transmitter Pairing – All Metal Construction Nady PM-200A Powered Personal Stage Monitor – 150W RMS – XLR and ¼” inputs, line / speaker / headphones outputs. If your audio interface does not show up in the Advanced settings: If you're on a Mac, check "Audio MIDI Setup" on your device and make sure the interface is listed there. Turn off your amp to swap out tubes. With four EL84 valves and our famously heavy-duty proprietary transformers, the Dual Terror’s 30 Watt power amp has enough grunt to fill any stage. Here are a couple of common problems and what should be possible to investigate, and also settle them (my fixes are the most common. First, you should determine the type of hum you are dealing with. While speaker impedance changes amplifier power output, it is not a major consideration for most users. If you want to get a grungy, distorted tone out of your guitar, you are going to need to add in some overdrive. Fender Play is the complete app for learning to play acoustic and electric guitar, bass and ukulele. switchable) Mono input and a stereo Output, and the unit is powered by dual 9v batteries, or by a regulated power supply…like the Big John or the Pro Power (both by Carl Martin). Never touch the amplifier chassis with one hand while probing with the other hand because a lethal shock can run between your arms through your heart. In 1957 the model name was changed to 'Skylark'. Shoutcast Server Software is a software that is installed on your own network server, while with Shoutcast for business, we host your stations on our servers, all you need to broadcast is an internet access. The typical transformer fault occurs when a winding opens up, usually due to an over-current, over-voltage or overheating condition; less common is a shorted winding resulting from. Take any guitar cable (short effects jumpers work best) and "jump" the loop—plug one end into the send jack and one into the return jack. Turn the. Sound mixers have small amplifiers in each channel. I'm not saying vintage Fender amps are perfect but many models are proven tone machines. Plugging your guitar amp will allow you to record it or send the sound to a public address, or P. Audio amplifiers are available in a range of forms, according to the task they are designed to perform. Next, I took the fuse I tested in it and plugged it back into a working amp of the same model, which ran fine (so I know the amp isn't just killing fuses). That is, either the left or right channel amplifier of your hifi. Technically, it’s not even a single-channel amp; both Normal and Top Boost channels are available. Peavey Amplifier and Pro Audio Parts. When a speaker is blown it doesn't need to be replaced, however – in most cases this is actually a very minor problem, and one that you can fix on your own without much difficulty. Try a new rectifier tube. If you have not been trained to work with high voltage then have an amp technician service your amp. I need a very high quality Pre-amp with Bass, Treble, Blance and Loudness control. This article does not include more recent "Master Volume" and JCM models. Learn more about Fender electric basses. Ask questions, show off your gear, or simply chat with fellow guitar fanatics. At Alesis, while our products range from keyboards, synthesizers, hard disk recorders, iPod recording and playback devices, electronic drums, mixers, signal processors, effects units, amplifiers and speakers one thing remains consistent; our passion for inspiring musical creativity and innovation through new technology. One of them is on your mixer board or PA, and the other is on a guitar amp. please take a minute to register your Fender products. 4 analog in/out, 2 digital in/out, 2 headphone out, MIDI in/out, and more. Windows audio device connectivity. I wired it up and worked great for over a year. You may not like the sound – in fact you almost certainly won’t!. Both tube and solid-state amps are available. I recently purchased a used Marshall Haze MHZ 15 amp, but it did not come with the footswitch. Now and then the amp itself truly is to blame. Effect pedal not working. If one channel works and the other doesn't you know the problem is in the bad channel between the input jack and where the two channels join. Clipping, in this case, occurs when an amplifier is pushed to create a signal with more power than its power supply can produce. The amp volume is sufficiently up. Wi-Fi router required for wireless operation. Save big, buy your car radio from HiFiSoundconnection. Art Tube MP Studio V3: User Guide. I built a 300 watt per channel amplifier (Class A/B) and included a 1200 watt SMPS supply designed for audio use. “Netgear 6200 Wifi Extender” Netgear N300 Wifi Range Extender With Ac Wifi Extender Keeps Disconnecting And Won T Reconnect Pc Advisor Network Wifi How To Use Router As Repeater. Immerse yourself in high-power, precision-based home theater entertainment with the new Denon AVR-X4700H. Choose from 13 classic amp models like the ‘59 Fender Bassman, Diezel Herbert Channel 2, Marshall JCM800, Fender Twin Reverb, and MESA Boogie Mk3 , all newly and faithfully created to be adjusted exactly as you would with the knobs and switches of the real thing. Most guitarists are fairly fanatical about the tube amp. ) the amp started working, however one channel (right one) didn't play at all. Choose your microphone. Best Plexi Pedals and Marshall-Inspired Distortions under $300 in 2020. All Articles; Tutorials; News; Classes. The Clean channel behaves more like a tube amp than the all-or-nothing cleans of solid state amps from years past. It could be a faulty lead, a broken patch lead or a loose connection on another pedal. Doing this, you're closing the circuit and your amp should react by switching a channel, note which one. Amplifiers have deadly voltages. For parts or not working. Go to the guitar shop, plug one of these in and throwdown to see if it is what you are looking for. Top jack for high Input, and bottom jack for low input. Amplifiers. Ho does not recommend strapping two amplifiers together to provide more power. -- Mikhail. Certainly one switch out of the two will switch one effect, say reverb or channel. Unloaded all the voltages checked out, so must have been resistive and making a voltage drop when loaded. So now you know what all the fancy buttons do on each channel strip, and it’s not that complicated after all. There are a number of reasons to get a preamp: It can boost a low signal It can clean up a signal so that it sounds better coming through the amp. Top jack for high Input, and bottom jack for low input. But two things might help: 1. Replacing that cord would (dis)prove that theory. View and Download Art Tube MP Studio V3 user manual online. Latency control (down to 64 samples). The gated cover is a little rusted but that's just cosmetic (there are also a few screws rusted shut on the cover so I couldn't take the cover off to clean it). I am customizing one strat and have some spare knobs at hand. Never touch the amplifier chassis with one hand while probing with the other hand because a lethal shock can run between your arms through your heart. Watch the latest TV Shows, from Sky One, Sky Atlantic, Sky Witness, Sky Crime, Sky Cinema, Sky Arts, Sky Kids, Sky Sports or download and watch them on the go. To do so, examine the back of the amp and find the footswitch input(s). Any ideas? Here is a snippet of the log showing me switching. Power is measured in watts and sometimes referred to as program, continuous or RMS power rating. My amp (Pioneer SX 10 AE) has a Sub pre out and also rca red and white line out which I can connect to my Subwoofer (Logitech Z533). a cab is plugged inand if I turn on the amp I get the loud hum (like an it has a guitar cable plugged into the amp but not the guitars Click to expand I have the EXACT same scenario with an 80's Hiwatt head I own if I'm understanding you correctly , (And I think I am but some others aren't) Makes the loudest hum you've ever heard. We are constantly driven to elevate the standard of excellence, giving audio enthusiasts the best sound quality and bass they could ever dream of. Amplifiers are mistakenly analyzed and sent in for repair/returned in light of off-base hookup. Don’t be tempted to turn the treble down on your amp or pedals - set it at around six to eight, no lower. I'm talking maybe 10 watts into a 70 watt speaker is enough to get a little blurring and 40 really doesn't sound that great. Using only one amp correctly hooked up as you describe, the right channel doesn't work. We could talk for days about choosing microphones for different applications — if you have a choice, practically any dynamic microphone is a good place to start when miking a guitar amp. Here we've listed our collection of guitar amplifier schematics. And no one really needs a 100-watt amp if you. One of the coolest amps out there. Depending on the quality of your amplifier, an external component may be better quality than the one that comes with your amp. 3 channels. If you have another amp, try the guitar and guitar lead into this amp to check the guitar and lead are functioning correctly. driven) this performance-tuned Denon receiver delivers a truly immersive 3D audio experience with eARC support. PV 16 Channel Dual Receiver Diversity Wireless Systems Find the up-to-date value of your Peavey guitar, bass, or amplifier, along with model information. DSP engine that delivers responsive, detailed, and varied guitar tones; Guitar Match - turn your guitar into another with startling realism; Thousands of custom amps, pedals, and pedalboards on ToneCloud® Looper/Recorder - quickly record ideas for riffs, vamps, and songs; Dedicated IR Loader with pre-loaded Celestion IR Files *For PC & Mac. See more tube amplifier safety info here. When dealing with electric guitars and electric guitar amplifiers, better results will often (not always) be obtained by instead using a microphone in front of the loudspeaker. Try to play the guitar in each amp using the same cable. a simple guide to the fixed electric guitar bridge. Issues with Win 7 and Fender guitar amp I have an HP tower with BeatsAudio, running Windows 7 Hojme Premium. Preamp-Tubes-c2. Not all amplifiers have effects loops, but those that do allow for you to place some of your effects within the loop. If the problem channel is now reversed, then the problem is probably inside the turntable or the cable is bad. Built to endure the elements, our marine audio speakers and subwoofers ensure pristine audio quality whether you're anchored at your favorite fishing spot or just cruising the open waters, wherever you choose to GO OVERBOARD!” Designed to be completely weather-proof, our marine subwoofers are real-world tested for salt/fog and UV exposure. Power on the amplifier and play a signal through to the speaker to make sure everything is in proper working order. round – Based on a Fender® Deluxe Reverb®* chime – Based on the Brilliant channel of a Vox® AC30TB* punch – Based on a Marshall® Plexi*. It was long regarded with disdain, mostly by mainstream tone snobs familiar with Sunn's earlier tube designs, but its reliability, affordability, and bone-rattling output made it a hit with punk and metal players. If there is no signal, power off the amplifier immediately and double check that all wiring is correct. behringer x touch mini universal usb daw midi controller. It does an awesome job on both vocals and instrument. Built to endure the elements, our marine audio speakers and subwoofers ensure pristine audio quality whether you're anchored at your favorite fishing spot or just cruising the open waters, wherever you choose to GO OVERBOARD!” Designed to be completely weather-proof, our marine subwoofers are real-world tested for salt/fog and UV exposure. Alfred 92,384 views. The unit arrived with the left channel not working (not the box, not the cable, the amplifier). What a great amp. Fixed "The Treble knob will affect the Middle knob on a. 220W @ 2 ohms. Experience the amazing spatial depth and lush sound of the. The typical transformer fault occurs when a winding opens up, usually due to an over-current, over-voltage or overheating condition; less common is a shorted winding resulting from. This mirrorlike lake—pictured not at dawn nor dusk, but under the tireless midnight sun that marks Scandinavian summers—lies just outside Örebro, a midsized city in south-central Sweden. Power is measured in watts and sometimes referred to as program, continuous or RMS power rating. -- Mikhail. The food will stay cold for about four hours if you don't open the door, according to U. Peavey Electronics Corp. For both these products, you can monetize your radio station and access the Radio Manager Online. Dirty or bent FX loop jacks. In sum, this design can lead to better musical reproduction – especially when the amplifier is pushed hard. This simple, inexpensive spring tank reverb circuit is taken from the Fender Hot Rod Deluxe. 86526K26F CAPITAL PAWN SHOP 2135 EAKIN ROAD COLUMBUS, OHIO 43223 In the SouthWest Square Shopping Center, corner of Eakin Rd and Harrisburg Pike. I recently received a new EVH 5150 head in the mail, supposedly straight from the factory. Welcome to the vintage Kustom amp site, VintageKustom. The high channel works perfect. I have been reading up on this subject, since I want my amplifier to play mono and not stereo. If you have more PA speakers than say 5 total including your Sub, then you may need multiple amps or a PA amp that can handle multiple speaker channels and more than one Sub. Maybe the most well known amplifier released under the Peavey name, the 5150 is the result of a collaboration between Peavey and Eddie Van Halen. Plug headphones into the mixer and then hit the SOLO/PFL button on the guitar channel. Tone Settings: One-Touch Recall of Custom Amp and Effects Setups. It seems that when I use a channel switching amp for live work I just stay in one channel and work it by using the volume control on my guitar and my overdrive pedals. 3 posts • Page 1 of 1. If you can isolate the issue to one part of the preamp, then the Tube Task Chart found on the sidewall of your cabinetry or in your Owner's Manual may indicate which tube or tubes are specific to that channel or function. Check different inputs (tuner, CD?) for any sound, listen for even a hiss from a tweeter or a slight "pop" when you turn on/off the amp. “This is why there was one Asian man in ‘Get Out,’” tweeted E. Since then, the 3-channel UNICO and 2-channel DAVID have provided musicians with high quality portable solutions for stringed instrument amplification. a simple guide to the fixed electric guitar bridge. neewer 48v phantom power supply black with adapter and one xlr audio cable ebay. Great recording amp and a great investment piece. my knowledge of amps is limited, so you may be onto something. You can find a cheapie mixer with a few channels online for well under $100. Either way, try a new cable and see if that alleviates the problem. Once opened, you can definetely perform the maintenace that was suggested. With 4 separate stereo input channels, you can hook your guitar, keyboard, drum machine and vocals (with the XLR input), while wisely using a separate amp for the bass. So, simply put: which amp/guitar channel volume and bass/mid-range/treble settings will give me the best sound quality at low volume? Also, when I do change from one preset channel to another, I often get hum/buzz/static, sometimes with a bit of feedback, which disappears when I fiddle with the channel volume/drive knobs. tech 21 nyc sansamp programmable bass driver di 3 channels pbdr clearance. Amplifiers also go bad on occasion, as do machines of any sort that deal with significant amounts of energy, especially kinetic energy (including sound). To reiterate, the amp turns on (jewel light lights up), the channel lights do not turn on and channels do not change, no sound except for a low level hum that can be turned down with the master volume. After playing a bit with the connectors (spinning them around, in and out, etc. Usually the first thing I do was to connect a speaker at the output jack to see if the sound really not present. 7-inch deep. Pick the left channel. Distortion is an important part of guitar amplifier design and this is the primary difference between guitar and audio amplifiers. Mac users can read more in our Resolving Audio Interface Issues on Mac. Phoenix Gold has created a wide range of car audio and marine audio amplifiers, subwoofers, and speakers to enhance your ride. Dial the master volume to zero and the power up. Simple guitar pedal repairs. If you have another amp, try the guitar and guitar lead into this amp to check the guitar and lead are functioning correctly. Get the guaranteed lowest prices on 1 Channel Guitar Amplifiers instruments at Musician's Friend. This tractor has a 6 cylinder motor, it is missing the starter, tractor is in neutral and all of wheels turn, year is 1937? Serial number is 211400. Swap your vacuum tubes one at a time if you are using a tube amp. 50 Beta 1), and am having trouble getting quality audio sound from DVDs. A problem in one channel but not the other. We can deliver for an extra fee.  Plug your guitar into the vibrato channel, then unplug the reverb return cable on the back of the amp (the one that comes from the reverb tank output) and plug it into the normal channel input. i have for sale a classic vintage Stereo Amplifier - this amp dates from 1983 and can do 30 w per channel into 8 ohm speakers. Unlike many old amps, the Vibrato and Tremolo effects work in both channels. If you hear one then the cable may have a short somewhere down its length. Warehouse Guitar Speakers ET-65. The company, which specialise in puzzles and games and is also one of the biggest independent suppliers of Lego, shipped over 150 parcels within the first weekend of going online, having expected. However, you can't always break out the amps and crank up the volume when practicing at home. All prices and product information subject to change without notice. We carry all brands such as Alpine, AudioControl, Boston Acoustics, Dynamat, Infinity, JL Audio, Kenwood, Kicker, MB Quart, MTX Audio, Polk Audio, Rockford Fosgate, Sony. This is particularly useful for these of us with quite very poor, or no, willpower. I bought a smaller cube amp for 5 dollars that did not work. Moving up to one 12” speaker and about 20 watts with up both reverb and non-reverb models, the Deluxe amp is like a Princeton on steroids. At Home Alone Together – Series 1 Episode 3. Buy now and get fast delivery and 2-year warranty. Search, listen, download. Specs:Marshall AVT 100 guitar amplifier Power: 100WSpeakers: 1 x 12 "CelestionPreamp: ECC83 lampEnd: transistorChannels: 3Digital processor, 16 effects with external connectionFX Level buttonScoop button (x2)Bright Switch buttonMaster Volume, Master PresencePetla effectsEmulated linear outputHeadphone outputExit to the. I think my problem might be a ground issue or a lot of electronics near my amp. TV and television manuals and free pdf instructions. Immerse yourself in high-power, precision-based home theater entertainment with the new Denon AVR-X4700H. Home; Articles. Outside, the USB player is tolerable as I only need to run this amp about 20-30% to hear to the edge of my yard. Bright - Hi Input. For example, if your interface has a right and left input channel, choose the one to which your guitar is connected. If you have not been trained to work with high voltage then have an amp technician service your amp. "Named for their black control panels, Blackface Fender amps are one of the company's most famous and coveted product series. At this point, you’d realize that the lack of dynamic range is not entirely a result of having a master-volume control in the circuit. Cakewalk develops computer software for recording and making music. It takes in a weak electrical signal/waveform and reproduces a similar stronger waveform at the output by using an external power source. This kit comes with an small HDMI to VGA Monoprice HDMI to VGA Kit - Monoprice. This mirrorlike lake—pictured not at dawn nor dusk, but under the tireless midnight sun that marks Scandinavian summers—lies just outside Örebro, a midsized city in south-central Sweden. Two voicing sections specially tuned for each channel: One three-band EQ for Channel 1 and one three-band EQ for Channel 2. If it is too high, it will overload the input channel and be distorted. What does a preamp do and do I need one? A preamp is a “pre amplifier” and, as the name suggests, it prepares the signal coming from a pickup or microphones for further amplification. Peavey ValveKing and Windsor Guitar Footswitch Get the most out of your Peavey ValveKing or Windsor amp with this 2 button footswitch. Click on photo for larger view: Revisit™ Reverb Tank, 9" long, 3 spring, equivalent to Accutronics 8EB2C1B. I never need stereo for my purpose. another way you manually reverse phase is to wire a guitar cable(for the second instrument) backwards one one end. GX5 power amplifier by QSC is designed for professional musicians, DJ’s and entertainers who require maximum performance and portability on a limited budget. Your amp may have a tube chart affixed to the inside of the headshell in an easily visible location. Hit the "Dual" button. Written by Don Stick on behalf of Bands for Hire. A tech could repair it but at what price?. Epiphone Texan is built using a solid Sitka Spruce top, Mahogany back and sides, with a Rosewood fingerboard and bridge. The AMP output, when used on its own, will send the drums, bass, and your guitar signal to your amplifier. Hello, I am having a home audio problem. Clipping, in this case, occurs when an amplifier is pushed to create a signal with more power than its power supply can produce. It has one input along with volume levels, treble and bass controls. 35+Years of Trusted Experience. Global website of Yamaha Corporation. Peavey and its MediaMatrix®, Architectural Acoustics®, Crest Audio®, Composite Acoustics® and Trace Elliot® brands can be found on concert stages and in airports, stadiums. This simple, inexpensive spring tank reverb circuit is taken from the Fender Hot Rod Deluxe. No hidden charges. Next, I took the fuse I tested in it and plugged it back into a working amp of the same model, which ran fine (so I know the amp isn't just killing fuses). TV and television manuals and free pdf instructions. “Netgear 6200 Wifi Extender” Netgear N300 Wifi Range Extender With Ac Wifi Extender Keeps Disconnecting And Won T Reconnect Pc Advisor Network Wifi How To Use Router As Repeater. The 1 meg resistor is the “grid load” resistor for the first tube stage of the amplifier. This represents a real shift from a sound being useful to a sound being inspiring. When the tube fails, you see this beyond any doubt. If there's no sign of life at all from either speaker, you might try plugging headphones in to see if there's. Amp footswitches have different functions depending on the particular amplifier. That knob seems to have no effect other than it pops and activates the "clip" diode when you turn it to the right or left, which in turn cuts off the entire signal for about 3 seconds. Built to endure the elements, our marine audio speakers and subwoofers ensure pristine audio quality whether you're anchored at your favorite fishing spot or just cruising the open waters, wherever you choose to GO OVERBOARD!” Designed to be completely weather-proof, our marine subwoofers are real-world tested for salt/fog and UV exposure. Power is cheap these days so it certainly won’t hurt to add an external amplifier for the main front left/right channels of your A/V system if your conditions call for it. While speaker impedance changes amplifier power output, it is not a major consideration for most users. Connect the audio interface up to your computer (or using a powered camera connection kit, to your iPad). And I recently bought an working PA (100 A) with reverb and EQ that sounds pretty good with guitar and stompboxes.