Amp i have a kam kxr150 amp but only one of the channels is working properly (channel a)channel B only has very slight sound coming off it even if the volume is turned up

clean switch connections

Suggest you take your amp to a Peavey dealer for a diagnostic report

It sounds to me that all you are getting is the pre-amp stage of the amp and nothing from the power amp stage. As it is on both channels then it is something that is common to both. This could be something to do with the power supply of the power stage. Or whatever is on the heatsink. It could be that the amp uses a single audio amp IC for both channels. If it does my bet is that it's gone. If it uses two sets of semiconductors for the right & left channel it would be highly unlikely that both channels have gone, but not impossible.

The last time I had a problem like this there was a defective transistor in the from end that was generating noise in the 30K range. Too high to hear and too high for the speakers to reproduce, but enough to put quite a load on the amp. Does this occur even with no speakers attached? If so, then put an osciloscope on the outputs and look for signals. WIth no input, there should be no output at all except for a little noise. You can also see if there is any DC on the outputs as well.

Please update this with what you find.

Thanks,
Dan

Check you audio in and out cables. . you may have them backwards.

Hello

I had a similar problem, now to be honest there is quite a couple of things that could be faulty. I dont know which cable you are using between the source and the amp, but i am using RCA to mini jack.

I had the same problem that my tuner on amp played through all channels dvd as well, but as soon as i hook up the amp to my computer only some of the chanels played.

I found out that there is actually mono and stereo versions of of that cable thus, if you use a external source and channel it trough the amp with a mono cable, only some channels will be playing.
If you use a stereo cable both channels will work.

The other problem could just be a simple setting on the amp itself.
Usually you can set the number of channels you want the amp to be set on. It is very simple, locate this function an try every setting untill you hear that all channels are working.

It could also be an "ic" on the heatsink of the amp which overheated, if you open up the amp you will be able to see it instantly. This will explain the slight sound you manage to hear.

My advice is to try the first and second sollution and as a last resort send it to a repair shop or if you still have warrenty send it back. I doubt that it is a hardware problem on the amp itself.

Please rate this.

Best regards

just open the service manual & change the option to 1-128 ,2- 215 , 3- 065 , 4- 000 , 5- 192 , 6- 129 , 7- 112
By-Rajan

scanman84: i would recommend using the 2 channel 300W amp to drive the dual voice coil alone. i wouldn't combine the single channel amp with the 2 channel. you can't tie the 2 channel outputs together & use that on 1 voice & attach the single channel amp to the other, plus there could be slight differences in amplification & timing which, could cause the sub to have minimal movement or cause a canceling effect which would reduce the spl, sound pressure level. if you need more volume use the lowest impedence speaker recommended by the amp's mfg & if you need serious volume, go with a higher output single 2 channel amp. just make sure you have sufficient wire size to handle high powered amps. example, 8awg wire is rated for 73 amps. also make sure the amp is well grounded with nut & bolt connections to the frame & that there is good ventilation.

peace-out

Only the right channel had a sound,the left channel is mute, whatever adjustment you did and whatever balancing you done nothigs happen,even you interchange the speakers. The problem is in the power amp. The STK IC there is busted already, it's better to change it with a new one so the performance become normal again.

make sure your speakers are connected correctly if subs and are inside the box then check connections also at times the rca at the back of the head unit can disconnect. if power light is on then error is either speakers not connected correctly, rca faulty or not connected or speaker output on amp is blown