<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=windows-1252" = http-equiv=Content-Type> <META content="MSHTML 5.00.2614.3500" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2>To Carl Meyer:</FONT></DIV> <DIV>    A long-time technician for the public schools = here in Denver has used springs to "restore" the crown in some pianos (mostly = studios and old uprights), and with successful results, i.e. better tone, longer = sustain, more volume.   He gave a technical at a chapter = meeting some years ago, and it would take a while for me to find my notes, but = briefly, he used angle brackets fastened to the backposts, automotive valve springs, = fender washers, and adjustable bolts to vary the pressure.  I believe the = spring / fender washer / bolt assemblies, one fastened to each backpost, = pressed directly on the ribs, probably behind the long bridge.   Seems = he may have let the tension down first in some cases, or maybe just in the = bass, I don't remember, but I could look it up.  Anyhow, the results were = quite impressive.  He didn't recommend it for fine pianos, mind you, but = to bring some life to an old piano that would otherwise be junked, it was a = fairly quick and inexpensive cure.    Sincerely, David Nereson, RPT, Denver</DIV></BODY></HTML>