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Old hitachi amp ha-3700 distorted on right chanel

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Audio Output signals distorted


Without knowing what make and model of whatever you're asking about we can't be specific.
But if all outputs are distorting. Either the preamp is driving the amp too hard, or the amp is fried and needs repair/replacement.

Aug 30, 2016 | The Music

1 Answer

My Behringer PMP1280S INPUT Chanel 1 is no longer working, after pulling out the mic XLR plug whilst the amp was still turned on.


You should be able to unplug a mic from the xlr input with the unit on with no problem.
I beleive the problem is that the xlr input jack has one or more legs broken off the board. If you dsassemble the board and resolder the three legs to the board you'll probably fix the problem.

Dec 01, 2015 | Behringer Music

1 Answer

I have a TNT 115 S that is distorting when i play E string on my bass. What might be causing that?


Please add more information to improve help, does the amp just distorts in that particular note or teh entire sound is distorted? does the amp distorts at low volumes?

Sep 05, 2013 | Peavey Electronics Peavey Tour Tnt 115...

1 Answer

My peavy kb300 produces a crackling noise & cuts off intermitently when I raise the volume on all 3 chanels.


Low Voltage power supply regulation issue, particularly with +15V and -15V.

Dec 23, 2011 | Peavey Music

1 Answer

When i plug an MXR micro amp (volume boost) in front of the supersonic, it works on the clean channel but does not affect the burn channel, Why? By the way, when plug in to the effect loop it does work...


DO NOT USE a guitar pedal in effects loop as it has the WRONG signal levels.

Also, when you boost the gain preceeding a distortion setting in an amp, the amp will just limit out and it will appear that the effects in the amp aren't working... but what is happening is you wind up with too much input signal and the "flat topping" distortion occurs right at the inout of the amp so no further can occur when you select a distortion in the amp.

Jun 22, 2011 | Fender SuperSonic 22 22W 1x12 Tube Guitar...

1 Answer

Fender hot rod deville 212 111. On the 2nd and 3rd distortion chanels the noise coming out of the speaker is very loud. Is this normal? Hard to play through the noise.


Hi. If the volume and drive levels are considerably low but you still hear a noise, you may want to consider trying a different guitar cable. The noise may be coming from a ground loop which is being amplified and overdriven by the amp itseld. I hope this helps. :-)

May 29, 2011 | Fender Musical Instruments Corporation...

1 Answer

My Mackie1604VLZ is always cutting out every so often while playing live, audio just quit but power still on ???on every chanels no audio comin out just little bit of tiny distorted sounds ,thats all you...


You can do a major amount of troubleshooting using tests from the many jacks on this unit.
I can walk you through a lot of those if you keep getting back to me with the results. First test: When the failure occurs does one or both sides of the headphones plugged in the headphone jack ALSO quit? Also does the level meter LED's reflect loss of signal? If these are still OK I want you to plug the headphones into the MAIN MIX MONO OUT jack. The headphone signal won't be very strong, but is it OK and not distorted.

I hope you have remembered to use BALANCED (TRS) audio interconnect cables and not plain mono cables from your mixer to the amps. Use of mono cables shorts out one side of the balanced output driving amps in the mixer. Also the other send of these MUST connect to balanced amplifier inputs... NOTE some amps don't have this and you have to use a BALUN or a DI at that end.

Lastly, ALL inteconnected equipment MUST be powered from the same source or receptacle for system safety.

Feel free to contact me via email or whatever.

Feb 05, 2011 | Mackie 1604 Vlz3 16 Channel Mixer

1 Answer

My hot rod deluxe has internal distortion problems.


There are many components in the system. Electrolytic capacitors are most suspect. C49, C50, C45, C51

There are many others but these are top suspects. You MAY be able to detect a change by cooling these components with circuit cooler spray.

ALSO check the +/- 16 volt power sources in the unit.

Jul 08, 2010 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

Will this amp have metal distortion if i add a distortion pedal


The amp can accept most anything you can get out of a distortion pedal. If you play it too loud you can damage any amp.

I would HIGHLY recommend you either take your amp to the store where you are buying your pedal and try it with your guitar before buying.

ALSO don't forget to get a power adapter as the pedals "eat: batteries.

May 02, 2010 | Fender Frontman 65R 65W 1x12 Guitar Combo...

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