Tmax Velocity knob has no effect

Posted: 4/23/2006 12:55:36 PM

Joined: 4/23/2006

I've recently built a Theremax kit and am very happy with it...however the velocity knob has no effect and the gate/trig led dosn't come on at all. Otherwise it seems to work perfectly. Can somone give me a little trouble shooting help. ie what specific components/conections should i check? I've gone over it dosens of times...its driving me crazy! Please help.
Posted: 4/24/2006 9:35:35 AM

From: Kansas City, Mo.

Joined: 8/23/2005


The first step is to establish that you are getting sufficient control voltage out of the volume CV.

Is your Volume circuit working ok?

Are you getting voltage in the range of 0-5 volts from your volume CV output? (you should be because this voltage controls the Tmax's internal VCA).

Please check this, post the results, and we'll proceed.
Posted: 4/24/2006 4:57:52 PM

Joined: 4/23/2006

Yup...I've got 3.4v from the volume CV.

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