Archive of the former Yahoo!Groups mailing list: Yamaha CS80

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Subject: Re: CS80 Expression pedal?

From: "rabbitfoot88" <rabbitfoot88@...>
Date: 2007-12-31

Sorry, just to confirm..

Did the original CS80 pedal also adjust volume and Wah at the same time? Anyone?

Does anyone who owns the original pedal use it much? Before I rush off to buy an FC-7.


--- In yamahacs80@yahoogroups.com, Scott Metzger <scottmetzger3d@...> wrote:
>
>
> I use that Pedal without any problems on my CS80. But I think its silly that the Wah
adjusts the volume as well on the CS80, so I don't even use it anymore.
> ________________________________
> > To: yamahacs80@yahoogroups.com
> > From: david@...
> > Date: Thu, 20 Dec 2007 14:08:03 -0800
> > Subject: [yamahacs80] Re: CS80 Expression pedal?
> >
> >
> > From what I've read, the old expression pedal was the FC-3a, which was
> > also used for other synths, like the GS1/2, DX-7, etc. The pedal input
> > a voltage on the sleeve (-15v in the CS80) and output a voltage on the
> > tip of the plug. It did this with a light bulb / shutter / photocell,
> > but there's nothing magic about this. What's kind of weird is that this
> > voltage is buffered and used to drive an LED light, which controls the
> > signal feeding the main volume knob (all on the PRA board). I don't know
> > why the used an LED / photocell as a VCA when there are a billion
> > IG00151 VCA chips all over the rest of the keyboard.
> >
> > Anyway, Yamaha now sells the FC-7 pedal. It just uses a potentiometer
> > (probably with a weird taper to match the old response) instead of a
> > light/shutter/photocell. However, the Yamaha manual (
> > http://img3.musiciansfriend.com/dbase/pdf/man/m_151552.pdf) says it's
> > compatible with the old FC-3a.
> >
> > David
> >
> > rj krohn wrote:
> >> yes, that would be great, gustavo. thanks alot-any leads you could provide(or a
diagram would be awesome) would be hugely helpful. i have yet to find anyone who is
using a current market expression pedal on a cs-80, so at this point, your lead is my best
one! thanks.
> >>
> >> "Gustavo E.E. GrinĂ³vero"
>