McCormack DNA-1 has a clank


My McCormack DNA-1 amp has the occasional "clank" noise. It sounds like metal expanding or contracting all of a sudden. It happens mostly right after a particularly loud passage. What could this be?

Thanks,

Bob
wz4rfv

Showing 1 response by stevemcx

Hi Guys,

The noise is caused by different rates of thermal expansion & contraction between the steel chassis and aluminum heat sinks. It is actually caused by the hardware being too tight, so if you carefully check the hardware to see that it is snug but not over-tight you should be able to eliminate the sound.

Cheers!

Steve McCormack
SMc Audio