Hi Ron, I agree about the choice of materials--but cost does enter into this too. At 10:17 PM 8/6/02 -0500, you wrote: > >>Fiberglass increases the effective "size" by a multiplier of approximately >>1.6 so your 6 inch wall "acts" like about a ten inch one. Separate plates >>rather than one six inch one isolated from each other. Do it right the >>first time! > > From what I've read, a closed cell foam, mass loaded vinyl, or lead >sheeting is more effective than fiberglass. But that's just what I've read. > > >Ron N > > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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