Hi Kevin, They don't suggest it for upgrights either. But I assure you that .25 cent pitch drop in a year is possible at A4 on an upright--compared to 4 to 10 cents without a back cover. The only exception is if the home has a set back thermostat. Those drive pianos wild here, even if they are back covered and dc equipped. I have toyed with the idea of some kind of thermostatic control added to the dc in those conditions. At 09:58 PM 12/24/01 -0600, you wrote: >>Hi Kevin, >>...I think you may be surprised at the bottom covers on Grands. The back >>covers on uprights make a *huge* difference to the response of the systems. >>Don Rose... > >Hi Don, List, > >I don't doubt at all the tremendous gains that can be provided by such a >thing. And I trust your judgement implicitly that it does perform as you >have indicated. > >I just wasn't persuaded that Dampp-Chaser (DP) was recommending all >installations be done with it as the standard thing to do now. > >For some Christmas traditions around the world: ><http://www.portharbor.com/santa/xsatrad.htm> > >Keith (not Kevin) McGavern >Registered Piano Technician >Oklahoma Chapter 731 >Piano Technicians Guild >USA > > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. mailto:drpt@sk.sympatico.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
This PTG archive page provided courtesy of Moy Piano Service, LLC