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Doepfer

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AW: [Doepfer_a100] Re: a124 wasp filter input level

2009-06-02 by yahoo@doepfer.de

> Hi Floris,
> 
> > the sounds that go in are less loud than normal doepfer vco's 
> or noise sources, would it be possible to have those sounds as 
> loud as the vco's etc by modding the filter module? 
> 
> There is a 27k resistor immediately after the audio in 'level' 
> pot (between the pot and capacitor C1, but easy to find by 
> following the trace from the pot wiper). If you lower this that 
> should increase the gain, but (and I'm guessing here) I don't 
> suppose you'll get much more than 2x or 3x improvement out of it 
> before it goes 'haywire' (I could be wrong!). I suggest trying an 
> 18k first, see what effect that has, and if that's OK, perhaps 
> try a 10k - lower than that and it's anybody's guess! (Because 
> the filter uses digital inverters as amplifiers, these are 
> 'biased' by a variety of resistors, and lowering this one may 
> have an effect on this biasing which stops the whole thing 
> working properly, but without trying it, I can't be sure!)
> 
> Tim

Couldn't explain it better :-)

Best wishes
Dieter Doepfer

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