[CAUT] damper chirp

[Joe And Penny Goss]

Level da strings. >g<
Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: "Becker, Lawrence (beckerlr)" <BECKERLR at ucmail.uc.edu>
To: "College and University Technicians" <caut at ptg.org>
Sent: Thursday, March 13, 2008 10:21 AM
Subject: Re: [CAUT] damper chirp


> The left string is not in phase with the two vibrating strings.  I have
> seen/heard that with Baldwins, too.
> 
> Lawrence Becker, RPT
> Piano Technician
> College-Conservatory of Music
> University of Cincinnati
> -----Original Message-----
> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
> geinert at drtel.net
> Sent: Thursday, March 13, 2008 9:15 AM
> To: caut at ptg.org
> Subject: [CAUT] damper chirp
> 
> Last night I was at a Bosendorfer Imperial I service.  A couple months
> ago I 
> regulated and voiced it.  Last night, when played with the shift pedal,
> whenever 
> the dampers were lowered they would chirp.   It was not completely
> unlike what 
> a glazed damper sounds like, but these are pretty new, and definitely
> not 
> glazed.
> 
> When I had regulated this, too  bright/not enough warmth were the
> complaints.  
> When voicing una corda, even though I know Bosendorfer does not set the
> shift 
> to clear the left string I did it anyway.  I tried to figure out why not
> to at the time 
> and couldn't come up with a reason.  Last night when the dampers were 
> chirping, I checked right away to see if the clearing string was the
> problem, and 
> it was.  Setting the action shift back to put the strings between the
> grooves and 
> the chirp went away.
> 
> I am interested to hear theories of why that would  be.  No other piano
> I have set 
> with the left string to clear when the action is shifted does this.(that
> I know of 
> anyway)
> 
> Tim Geinert
>