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Amp "pop" - need help

just purchased a McCormack DNA-1 Deluxe. While the sound quality is greatly improved - better stereo separation, deeper bass, less harsh highs, improved dynamics - I have noticed the amp gets quite hot. After just a few hours the heat sinks are hot enough to be quite uncomfortable to the touch. Worse, though, the amp makes a popping noise as it heats up. Sounds a bit like metal expansion. . .the wife says it sounds like the last kernel of corn popping in the microwave.
Not sure if this is an issue but it sure is a big change over the previous amp that would run all day without overheating.

Any ideas?
audio_newb

Showing 1 response by stehno

stehno
1,453 posts
 
I've owned several DNA-2's. My current amp is a DNA-2 Revision A version and I notice this once or twice 'popping' sound typically after I have turned off the amp (during cool down). I think it has to do with the heat sinks expanding and shrinking as you suggest.

But if you are still concerned, you might contact Steve McCormack at smcaudio.com.

-IMO
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