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My Optigan makes a lot of buzz and hum. What’s wrong?

Posted by peahix on 23rd April 2006

Basically, you’re going to have to face the fact that the Optigan is inherently a very buzzy, noisy machine. Unless you want to completely replace the grounding and amplification system, your only hope is to try to minimize the buzz and maybe notch it out with a multi-band EQ or some noise reduction DSP. The [...]

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My Optigan is making a knocking or grinding noise. What’s wrong?

Posted by peahix on 23rd April 2006

Chances are, there’s a small divot cut into your idler wheel. As the wheel goes around, it makes a knocking noise every time the divot hits the drive shaft. This is fairly easy to fix. If you remove the idler wheel (that’s the black, hard rubber one) and fill the divot with super glue, you [...]

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When I play the top most key on my Optigan, I hear one of the chord tracks bleeding through. What’s wrong?

Posted by peahix on 23rd April 2006

Crosstalk! Learn to live with it! If you don’t have the test discs, the easiest way to hear the crosstalk is by pressing the top most key on the keyboard. Crosstalk changes with the weather, basically- the light detector is very sensitive to temperature and atmospheric changes. The result is that adjacent tracks on the [...]

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