The Duplex affect

Erwinspiano at aol.com Erwinspiano at aol.com
Sun Nov 11 13:35:05 MST 2007



Hi Dave
  I agree about the rear duplex. It's the front one we  need to do away with 
mainly by increasing draft angels & keeping the energy  in the vibrating 
speaking length where it can offer the most tonal/musical  impact.
  Yes... it makes you a control freak....and so?   That's what we get paid 
the big bucks for.
  Dale

Dave P.  wrote
  I’m with you on the duplex scale thing.   The rear duplex probably adds 
some high frequency sounds more of  a cymbalstern effect since all the 
frequencies are singing along with the  vibration of the bridge.  That’s fine unless it 
gets  obnoxious.

The front duplex however, is the one that bugs me the  most.  I have a few 
pianos at the school that just when I get a note  tuned where I want it, the 
front duplex makes an untoward noise I’d rather do  without.  I realize that the 
front duplex contributes some brilliance to  the tone which you can tell when 
you mute it out.  However, I don’t think  that’s brilliance that I need.  If 
I want more brilliance I can do it  with the hammer and traditional methods.  
That brilliance I have some  control over.  The front duplex brilliance is 
kind of there or not  there and is out of my control.  My choice is to get rid of 
that  brilliance I can’t control, and bring up brilliance I can  control. 
Does that make me a  control freak??


dave 





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