2. amps-preamps
  3. 1273701185

Speaker pop on amp startup - 1 channel only

I have an amp (Sony TA-N90ES) that makes the left speaker only pop as it comes out of protection. With a VOM I measure about 5VDC on that channel for a split second, quickly diminishing to zero.

I got a very good deal on this amp because of this but I would like to figure out what is going on. Any suggestions? It is a solid state MOSFET amp.

Mark
mhedges

Showing 3 responses by 4est

4est
507 posts
 
Leave it on!
4est
507 posts
 
Sorry for the jest, but I imagine there are many things that could do it. Without a schematic it is hard to tell. I tend to leave SS gear on regardless. Leave it on or get it fixed, lest you take out a driver passing DC. I'd have it looked at straight away myself, in case there is some sort of bias mismatch or a part nearing failure -even if it sounds "right".
4est
507 posts
 
The cap in the tweeter will protect it. 5v is not much DC at the output. It could be as simple as the relay sticking on that channel or a bad cap.
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