setting the VCF right

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Chris72160
 
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Joined: Wed May 01, 2013 6:24 am

setting the VCF right

Post by Chris72160 »

Hi,

which tone should be pressed/ which voltage should be applied, while the VCF should be tuned at 500Hz?

C1/ 65,4Hz, 2V
or
A/ 110Hz, ?V
or
C2/ 130,8Hz, 3V

In the original TB-303 manual is no specification regarding the tonehigh.

Greetz Chris

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antto
 
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Re: setting the VCF right

Post by antto »

it shows the sawtooth wavelength as 15ms, which is 66.6Hz, so 2 volts

Chris72160
 
Posts: 44
Joined: Wed May 01, 2013 6:24 am

Re: setting the VCF right

Post by Chris72160 »

Where is it shown exactly?

Greetz Chris

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antto
 
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Re: setting the VCF right

Post by antto »

on the actual circuit schematic right next to the VCF section (TP6)

Chris72160
 
Posts: 44
Joined: Wed May 01, 2013 6:24 am

Re: setting the VCF right

Post by Chris72160 »

Found it! Great. :)
Thank you very much.

The informations here seem to be wrong, because lower C is not 3v:

http://www.ladyada.net/wiki/x0x/vcftesting

Greetz Chris

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