[LAU] Question about using old Yamaha expression pedal

[david]

On 8/31/22 22:31, Will Godfrey wrote:
> On Thu, 1 Sep 2022 09:33:11 +0200
> Alexandre DENIS <contact at alexandredenis.net> wrote:
>
>> On Wed, 31 Aug 2022 18:06:59 -1000
>> "David W. Jones" <gnome at hawaii.rr.com> wrote:
>>
>>> Will a Yamaha expression pedal work on a non-Yamaha MIDI keyboard? It
>>> uses a stereo 1/4" plug.
>>>
>>> Thanks!
>>>   
>> Hi,
>>
>> Some expression pedals are wired with the pot on TRS, some others use
>> RTS (i.e. wiper of the pot either on tip or ring). To make things worse,
>> some use a lienar pot, some others use a log pot.
>>
>> AFAIK Yamaha uses RTS wiring. On the other hand, most pedals use TRS.
>> But in a lot of keyboards, the polarity is either tunable or
>> auto-detected.
>>
>> The only advice is to test the pedal on the keyboard, or to check in
>> its documentation.
>>
>> -a.
> For this sort of thing, and testing leads, PSU polarity etc. a small cheap
> meter is invaluable. Takes all the guesswork out of it - so you see what you
> *actually* have, not what it says it has!
>
>
I have a meter. Will just have to figure out how to test this using it!

-- 
David W. Jones
gnome at hawaii.rr.com
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http://dancingtreefrog.com
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