The material is called acoustical baffle foam and can be purchased in 3'x5' sheets in either 2 1/2" or 3 1/2" thick. Contact Marketek at: www.markertek.com They are suppliers for the audio and video industry. I think I paid something like $50 (including shipping) for the sheet and was enough to do 2 pianos. This is the same material that Edwards is selling. The material will yield a reduction of volume by 30-40%. Each and every client has been thrilled with the overall sound reduction. Tom Servinsky ----- Original Message ----- From: "Israel Stein" <custos3 at comcast.net> To: <pianotech at ptg.org> Sent: Saturday, November 03, 2007 10:21 PM Subject: Acoustic foam > At 12:00 PM 11/3/2007, John Formsma wrote: > >>If I do this again, I will try to find the foam at a cheaper price. >> >From Edwards, it was pre-cut, but $110 (my cost) for just the bottom >>foam pieces. I think I could find it cheaper, and cut it myself. >>Google "acoustic foam." It is expensive, but buying it in sheets >>probably makes more sense, unless you want to pay for the convenience. >> (Even pre-cut for that model piano, I had to trim one of the pieces >>to fit around the player.) > > John, > > Years ago I had to significantly reduce the volume of a piano without > voicing. The piano tone was fine, but the owner had tinnitus, so she > couldn't bear the sound. She was going to return it to the dealer - so we > had to do the job in a way that was reversible. I bought a 2-inch foam > mattress at an Army-Navy store and cut it up to fit into the bottom of the > piano. The cost was minimal, and one mattress yielded more than enough > foam to do the job. The reduction in volume was significant - the client > kept the piano and everyone was happy. Good thing - it was a new Steinway > L... > > I am not sure that so called "acoustic foam" is worth the expense. From > what I read on the results of a "Google" search the concerns being > addressed are mostly architectural - fire resistance and appearance. These > are not considerations when installing foam in a piano - it's out of > sight, and the piano itself is not fire-resistant... So next time, try > the simple foam mattress - it will do the job. Or give your client the > choice - are they willing to pay the extra fifty bucks for pretty, > fire-resistant foam? > > Israel Stein > > >
This PTG archive page provided courtesy of Moy Piano Service, LLC