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Circuitbenders Forum

Circuitbenders Forum => Circuitbending discussion => Synths & Samplers => Topic started by: pbloyer on April 03, 2006, 04:14:48 PM

Title: Where might I find schematics, photos, ideas for the Yamaha PSS 130?
Post by: pbloyer on April 03, 2006, 04:14:48 PM
I have two and can't find anything really useful

the distortion bends I Have found have really high-pitch sound that I can't remove...

please help. I am getting frustrated!!!  :-[
Title: Re: Where might I find schematics, photos, ideas for the Yamaha PSS 130?
Post by: sponge on June 07, 2006, 10:18:13 AM
can someone correct me if i'm wrong, but i believe if you solder a small value cap (e.g. 0.001uF) between the output and ground, you can kill some of the high pitch hum...
Title: Re: Where might I find schematics, photos, ideas for the Yamaha PSS 130?
Post by: Circuitbenders on June 07, 2006, 02:37:06 PM
A capacitor wired as you suggest forms a kind of passive low pass filter and will remove some of the top end noise in theory. To quote something i was just reading on the net:

'A filter in which a capacitor provides a path to earth, therefore presents less attenuation to low-frequency signals than high-frequency signals and is a low-pass filter.'
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