Amp heat sinks are ringing


I have been working to reduce the slap echo in my room by using quick hand claps, and various foam panels to attenuate the noise. I have discovered that my Classe CAM 200 monoblock heat sinks are actually ringing- they can be excited by handclaps, and heard across the room. There are 10 heat sinks per amp, about 2" deep by 8" high. Running my fingers along the heatsinks makes them ring like a bell!

I am concerned that this ringing might be excited when I am listening to the system, and may add extra treble noise.

Does anyone have any suggestions for damping out the noise? I am concerned about using a material that can withstand the heat, and not impede the airflow?

thanks for your help!
gnobber

Showing 2 responses by herman

You also try the opposite of Rhljazz's recommendation. Put the blocks under the fins so the weight of the amp rests on the blocks instead of the feet. That way the heat from the fins could rise and escape more easily than if the top is blocked. You could also try several strips with spaces between so air could get in between them. I am not familiar with your amp and don't know if the fins can hold the weight so I would proceed with caution.
Excellent idea Gnobber, I would continue to acquire wine corks. Even if it doesn't stop the ringing you won't care!