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DIY Amp Repair--Roland KC500


Jonah

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I have a Roland KC-500 that I use to play gigs in bars and small clubs. I like the fact that I can mix four inputs at once and it puts out a pretty decent sound.

 

Anyway, at high volume settings, my speaker makes occasional "pops," which seems to be caused by vibrations, low frequencies, and my bassist dancing around! This is more of a problem in a practice situation because there I don't use monitors and run the amp pretty hot.

 

This noise cannot be heard on the XLR outs. Does anyone have any recommendations on how to diagnose or fix this problem.

 

While I'm at it, what is everyone's opinion on this amp? Or are there any really good combos I should be aware of?

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I like mine. Had it repaired once with no problem. And, I like the fact that two can be connected to make it stereo.

 

The problem could be caused by a bad cord, or a bad connection in the amp. Are you running a mic into the amp?

 

Robert

This post edited for speling.
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Originally posted by Jonah:

I have a Roland KC-500 that I use to play gigs in bars and small clubs. I like the fact that I can mix four inputs at once and it puts out a pretty decent sound.

 

Anyway, at high volume settings, my speaker makes occasional "pops," which seems to be caused by vibrations, low frequencies, and my bassist dancing around! This is more of a problem in a practice situation because there I don't use monitors and run the amp pretty hot.

 

This noise cannot be heard on the XLR outs. Does anyone have any recommendations on how to diagnose or fix this problem.

 

While I'm at it, what is everyone's opinion on this amp? Or are there any really good combos I should be aware of?

Start by checking the connections between the speakers and the amp part of the unit. Sounds like the problem is after the preamp as you do not hear it in the line outs. So something is loose after that.

 

Being an "occasional" pop and requiring an accompaniment of dancing bassists, this is going to be hard to run down.

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