Synth-DIY Yahoo! Groups Archives

Hammer sensors

2004-02-08 by Peter Phillips

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

Re: [disklavier] Hammer sensors

2004-02-08 by Carol Beigel

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

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----- 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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Hammer sensors

2004-02-09 by Peter Phillips

Not sure I agree with you Carol about the hammer sensors only being for
recording. Until these were adjusted, it was impossible to set the minimum
playing velocities below a certain level, a level that was far too loud. As
well, errors were reported during the auto velocity set routine. But when
the hammer sensors were adjusted correctly, all tests performed correctly,
and I could get the velocity level down to a very nice soft volume. So I
dunno...
Peter Phillips
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

Disklavier

Hammer sensors

Hammer sensors

Re: [disklavier] Hammer sensors

Hammer sensors

Move to quarantaine