Hi Tom, Wurlitzer used the calibrated element on their grands and verticals from around 1975 and earlier. Don't know when they stopped. It was claimed that the extensions of the bridge over more area of the soundboard spread the vibration over a larger potion of the soundboard causing the amplification to be better. When they stopped building their own grands the CE died. The last real Wurli grands were not bad. James Grebe R.P.T. of the P.T.G pianoman@inlink.com Creator of Handsome Hardwood Caster Cups and Practical Piano Peripherals in St. Louis, MO -----Original Message----- From: Tom Cole <tcole@cruzio.com> To: pianotech@ptg.org <pianotech@ptg.org> Date: Sunday, November 01, 1998 7:45 PM Subject: Re: CFS - trivia? more reply >James Grebe wrote: >> >> What you have described IS the calibrated element. > >Ah. Didn't know what it was called. Have you had any experience with it? > >> >> >About ten years ago, I tuned a grand that had the name Charles Frederick >> >Stein on the fallboard. It had an unusual feature on the soundboard >> >which I can only describe as an "outrigger" that broadened out the foot >> >of the treble bridge - normal width at C8 widening to about 4" toward >> >the tenor but with a normal cap running along the back edge. >-- >Thomas A. Cole RPT >Santa Cruz, CA > >
This PTG archive page provided courtesy of Moy Piano Service, LLC