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#3045280 11/12/20 05:41 PM
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Dear All,

here is a somewhat unusual question. I have an amplifier, a grand piano, and a wife, all three wonderful in their own way. Actually, I have two grand pianos; one acoustic and one digital. The living room is too small for all three (includiing the wife; I count the grands as one unit).

I had to put the stereo in the basement bc of this. But I never wanna sit in the basement, it is not cosy and the acoustics is bad. I wanted to put the stereo back in the living room. But since there no space really, I wondered how. So now my wife came up with the following ingenious idea; put the amplifier and the rest of the electronics under the grand! Wonderful I thought, until I realized the amp actually produces heat.

Now I am not sure about how fantastic this idea actually was anymore; is it ok to put an amp under the grand? It produces heat but is it not hot; just warm when operating.
It is actually an Ayre V-5xe, American one. Nice sound. Not tube or class A. It is quite "normal", but still is gets warm (I am far from being burned when touching it, but it is clearly warm, about 45 degrees celsius maybe). But grands do not like radiators underneath right? And my grand is a lot more expensive than the amp..

Comments are welcome!

/Hermerik

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Pianos don't like change. I'd never put heat sources under a piano like that.

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That amp is 150W per channel, so unless you're listening at full volume all the time I'd guess you're probably using about 100W. This would have no impact on the digital grand, assuming that's the one you're talking about. But if you're talking about the acoustic grand, imagine a 100W bulb which gets pretty hot, I don't think I'd leave a bulb that size sitting under a piano soundboard. Could you put the speakers under the piano and the amp somewhere else?


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Hermerik,

As with so many things it is not always one thing or another, but rather a matter of degree. 411 is correct in that pianos don't like change. However, have you monitored the temperature up near the SB? And just how long do you have the thing on? Does it produce heat 24/7?

Can you record the temperature outside of the piano and then record the temp underneath the SB and compare? That would be helpful.

Peter Grey Piano Doctor


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For years I have had a large high quality amplifier, set on a marble slab on legs to isolate it from the floor, under my high quality grand piano. The amplifier is left on permanently, but gives off no heat to the touch. Despite its size and placement, it still sits easily more than a foot below the piano. If it had tubes, I am not sure it would be a problem - the heat would be consistent at least.

The speakers are set at either end of the piano, and cause the only problem that I know of - the piano strings can vibrate in sympathy with the speakers, and subtly colour the sound. The hi-fi people who set them up pointed this out.

It would be nice if the room were large enough to separate everything, but it is not.

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Just checked - my amplifier is the older Ayre V-5.

Earlier, my husband set up some equipment like this in our basement, right under the floor, wires coming up through small drilled holes in the floor by the wall, in the same location. Would that be an option for you?


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