OK to place amp on top of subwoofer?

I think Jeff is right on. A sub would somewhere between "most likely and surely" raise hell with the musical character of the standard amp for sure-- and possibly the sub too. It even makes me shudder to think about it. Steve McCormack and many others have gone to great lengths to reduce, minimize, or eliminate amplifier vibrations.

Yet I understand what Sean is saying too, ie setting a well built amp on a sub probably wouldn't physically damage either one. Still, doing it would make me a nervous wreck, and I'd go to great lengths to find another way.

Just re-read what I said above-- makes me sound like a bleeping authority, but Sean KNOWS that I have a great deal of respect for his technical expertise, and his writings here on the 'Gon. GOOD LUCK. Craig

Craig, i think that we are all basically saying the same things. None of us really likes the idea in theory but it may work out okay in reality. As i stated "would i recommend it, probably not". However, i don't know all of the variables in the situation ( i.e. available space, WAF, etc... ) and that's why i tried to cover both sides of the coin.

Either way, i've learned enough to know that we all see with different eyes, hear with different ears and think with different brains. Obviously, opinions and experiences will vary based on all of those things.

One thing is for sure though, i would NOT use cones between the amp and the platform that i placed on top of the sub if i did try this out. I can only see BAD things happening in that situation... Sean
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just curious, do you guys think bearing isolators, such as Aurios would help the situation. gary

I think that with the weight of an amp on them and vibration eminating directly below the bearings, the bearings would effectively couple the vibrations to the amp. I would think that using something that had a high absorption / damping factor would be more effective. Just a guess though with a lot of room for error. Sean
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YAUD (yet another useful discussion)! After reading your input, I realized that though my sub crossover/amp is separate from the speaker cabinet, I have had it sitting on top of the speaker with just hard rubber feet. I happened to have two sets of Vibrapods in a drawer, so I put all eight under the amp. Immediate improvement in bass definition (either that or my imagination is getting carried away). Thanks all!