PaoloC
Joined: 30/01/06
Posts: 5
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Sustain pedal compatibility
#998244 - 16/07/12 10:22 PM
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Hi, I have this problem: I have a Casio CDP 100 piano, and I need to connect a sustain
pedal (Roland DP-10) to the piano.
The pedal's jack is (unusually) a stereo
jack, since the pedal permits the half-pedalling when connected to a compatible keyboard.
On the pedal there is a switch for enabling/disabling the half-pedalling.
Problem is that the pedal works reversed: when pressed, it disables the sustain, e when
depressed, the sustain is enabled.
I have tried to make myself an adapter: a
female stereo jack and a male mono jack, connected through a piece of cable. The pedal's
stereo jack goes into the adapter's female stereo jack, and the adapter's male mono jack
goes into the piano mono jack socket.
I have tried every possible cables'
connection/inversion (I've used a cable consisting of two cables + shield), with no luck.
Any suggestion?
Many thanks!
Paolo
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shufflebeat
Joined: 09/12/07
Posts: 2271
Loc: Manchester, UK
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Re: Sustain pedal compatibility
[Re: PaoloC]
#998246 - 16/07/12 10:44 PM
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Might this be related?
"I've just googled Dp-10 & can see it has two
switches...one which will kick in when the pedal is half pressed & the other when the
pedal is fully pressed. I have no wiring diagram, but I'd hazard a guess, that both
switches are "normally open" (with no confirmation from Terratec, I'd hazard a guess -due
to the high number of related posts on here -that the Axon expects a footswitch that is
normally closed)."
From this discussion:
http://www.axon-technologies.net/forum/viewtopic.php?p=8166
Different symptoms in that case but, I think, possibly the same cause.
-------------------- Ohm's Law states, "Your PA isn't as powerful as you think it is".
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James Perrett
Joined: 10/09/01
Posts: 9645
Loc: The wilds of Hampshire
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Re: Sustain pedal compatibility
[Re: PaoloC]
#998326 - 17/07/12 09:30 AM
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I think you probably need a different pedal. Some general purpose sustain pedals can be
switched to be normally open or normally closed so that they work with the widest possible
range of keyboards. James.
-------------------- JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net
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BJG145
Joined: 06/08/05
Posts: 2152
Loc: Norwich UK
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Re: Sustain pedal compatibility
[Re: James Perrett]
#998330 - 17/07/12 10:49 AM
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Quote James Perrett:
I think you
probably need a different pedal. Some general purpose sustain pedals can be switched to be
normally open or normally closed so that they work with the widest possible range of
keyboards.
Yep, sustain pedals
either have a closed contact which is opened by pressing the pedal (NC or "normally
closed") or an open contact which is closed by pressing the pedal (NO or "normally open").
Seems Roland are generally NC while Korg and Casio are generally NO. Neither your pedal or
your keyboard has an option to reverse the polarity, so you need a different pedal. I
should get a switchable one.
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hollowsun
Joined: 20/01/05
Posts: 4507
Loc: Cowbridge, South Wales
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Re: Sustain pedal compatibility
[Re: PaoloC]
#998347 - 17/07/12 11:18 AM
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Most keyboards now normally detect the type of sustain pedal switch on power up.... Plug pedal in, switch on - should detect and adjust accordingly. Can't vouch for
the CDP100 but certainly my experience here.
-------------------- Website / Music Lab Machines / Blog
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PaoloC
Joined: 30/01/06
Posts: 5
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Re: Sustain pedal compatibility
[Re: PaoloC]
#998780 - 19/07/12 03:35 PM
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Thanks to everyone for the suggestions.
Now I get the problem: It's not
possible to change from normally opended to normally closed by just switching the
wires.
At the moment I'm experimenting a different approach: switch the pedal
to continuous, and then find a way to simulate the behavior of the Casio sustain pedal by
getting the signal from the DP-10 tip and ring jack contacts.
I'll let you know
my findings...
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damoore
Joined: 05/07/09
Posts: 325
Loc: New Hampshire
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Re: Sustain pedal compatibility
[Re: PaoloC]
#1000227 - 28/07/12 01:29 AM
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You would need to swap the internal switch from a momentary on to a momentary off (or vice
versa as the case may be). But there are sustain pedals which can be switched to be either
open when down (aka mom off) or open when up (mom on). Just changing the wires on the
plug, or building an adapter won't help.
Edited by damoore (28/07/12 01:30 AM)
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