[CAUT] Kawai GS60 Bore distance

[David Love]

While a properly voiced hammer will help give you the maximum sustain
offered by soundboard, it won't give you sustain that a soundboard is unable
to deliver.  Sample some different hammers in the critical sections and see
what offers the best compromise between attack and sustain keeping in mind
that the more sharp and/or percussive the attack the shorter the perceived
sustain.  The problem areas you describe are classic "killer octave"
diminished soundboard capacity areas.  

David Love
www.davidlovepianos.com

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Bob
Hull
Sent: Tuesday, July 21, 2009 9:26 AM
To: caut at ptg.org
Subject: [CAUT] Kawai GS60 Bore distance


1.  I'm putting a new set of hammers on a Kawai grand.  I'm measuring 130 mm
on hammer bore distance for this Kawai GS60 - does this match their specs?

2.  Typically, how strong are Kawai soundboards?  Aren't they CC?  I'm
hoping these new hammers will help sustain return somewhat - I have tried
voicing and shaping to practically no avail.  These have already been shaped
a couple of times at least anyway so they're getting down there.  It's had
about 13 years of very heavy usage.
 I will measure downbearing later today.  Mainly from about Bb 4 up through
octave 5, maybe some of 6 are lacking in sustain quite a bit.  

Bob Hull