Disklavier

The Hammer Sensors are for recording.  The reason your
piano played better was that you manually adjusted the
mimimun velocity for each note.

Carol Beigel

----- Original Message ----- 
From: "Peter Phillips" <eleced@...>
To: <disklavier@...>
Sent: Sunday, February 08, 2004 12:34 AM
Subject: [disklavier] Hammer sensors


> Hi All
> Throwing in my experiences with DKV hammer sensors, I
have to agree with
> Robert Welcyng that their maladjustment will affect
reproduction. When I
> purchased my second hand MkII C7 DKV, it was woeful
in all respects. A
> piano technician fixed the piano, but the DKV was
horrible. The overall
> level was far too loud, the volume level varied
between keys, and it was
> impossible to make it play as well as the PianoDisc I
had sold to purchase
> the instrument.
>
> After lots of time and phone calls, I discovered the
reason for the
> problems. The hammer sensors had been adjusted by a
technician in
> accordance with the DKV manuals. That is, adjust the
height of the sensors
> so a "beep" is heard when the hammer is 2mm from the
strings.
> Unfortunately, what Yamaha forgot to tell us is that
it's the SECOND beep,
> not the first. As a result, the best the technician
could get was a setting
> of 5mm from the strings.
>
> Once I discovered the trick, it only took a few hours
of adjusting and
> finetuning to get the instrument back to playing in
its usual superb way. I
> now regularly test the 2mm setting, and also manually
finetune the minimum
> velocity setting for each note.
>
> I would have thought the hammer sensor position would
also affect
> recordings. I'm most interested to hear the views of
others on this. I
> realise that hammer sensors are only fitted to some
instruments, so perhaps
> they don't contribute to recording, just
reproduction.
>
> Peter Phillips
> Padstow, Australia
> From Peter Phillips, Electronic Editorials NSW. Phone
(02) 9773 4734,
> mobile 0418 407 607, fax (02) 9773 9943. Website at
> http://members.optushome.com.au/eleced/index.htm
>
>
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