Amp heat sinks are ringing

This is the first I've heard of this problem with the CAM-200s-- I'll have to go home tonight and see if mine do it, although where they are located I would never hear the heatsinks ringing, but I should hear their effect on the sound coming out of my speakers.

As for putting something over or under the heatsinks I think they get too hot to make that an option.

I would think that it would be a fairly simple matter of "wedging" a piece of appropriately size rubber (maybe a 1/4" long piece of the appropriate diameter automotive heater hose?) in between fins at their midpoint-- you'd not really adversely affect airflow or cooling area, and you should greatly reduce or eliminate ringing since you've just effectively halved the unsupported length of the fin-- this would have to alter its resonant frequency substantially.

Maybe 2 rows, one 1/3 of the way down, one 1/3 of the way up, of small pieces of appropriately size rubber (or cork) material would be more effective.

What effect this would have on the amp's sound is debatable, I guess-- although I can't see how eliminating a resonance there that's being excited by room sound would be anything but a positive for sound quality.

Got it Sean-- but many of these fixes are easily reversable so I think we should plunge on in and see what happens- at least that's what I'm going to do.

Gnobber--

Let us know what Classe says-- the last time I emailed them a question, it took about a day and a half until a very helpful guy called me up with a reply.

As for my amps, I can make the heatsinks ring if I run my finger on or across them, but due to the lucky fact that they're sort of "buried" in my room and off to the side, I'll never hear the noise they make. Playing the system as loud as my loudest ever is I couldn't hear any appreciable ringing with the naked ear or a mechanic's stethoscope. I'll damp them with something anyhow, likely a rubber/cork/rubber sandwich pad used for electric motor isolation cut into little pucks. I have to talk to the sales rep and see what density he thinks would work best in this non-standard app of his products.