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FDP Forum / Rock-it 88's - Keyboard Forum / Keys and volume pedal question


New England, USA

Quid Malmborg In Plano
Jun 2nd, 2010 10:54 AM   Edit   Profile  

I have a little Casio CTK-700 keyboard that our band uses for synth-string sounds on one of our songs. Last night at our rehearsal we connected up the keyboard to our PA system, and I placed a cheap Bespeco volume pedal along the way, in order to get a "swelling" sound. Instead what happened was that every time I depressed the volume pedal, I'd get this loud scratchy sound and the sound would cut out at points along its travel. Yet when I had the pedal in my bass' pedal train it worked just fine. And a couple of years ago I replaced the pot in it with a 250k audio pot. So what can we do? Do we need to get a better quality volume pedal? Is it "the nature of the beast" with cheap keyboards? Can anything be done?

Contributing Member

Connecticut USA

Angular banjoes sound good to me
Jun 4th, 2010 11:47 AM   Edit   Profile  

The only thing I can think of is that there’s some type of impedance mismatch between the Casio and the Bespeco. The CTK-700’s output jack is really a headphone connection, which means the signal is fairly “hot.” Most volume pedals are designed to handle instrument-level or line-level signals.

If you can try a different volume pedal, that might be the easiest solution. Otherwise, perhaps try running the Casio direct into the PA, and then an idle bandmember could simulate the swell using the appropriate PA fader.


New England, USA

Quid Malmborg In Plano
Jun 15th, 2010 08:28 PM   Edit   Profile  

We solved the problem by using a passive DI box after the volume pedal. Everything sounded good after that.

FDP Forum / Rock-it 88's - Keyboard Forum / Keys and volume pedal question

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