Doepfer

man, I feel jipped now. Every oscillator that doesn't have a clean
sine is simply using cheap parts? that suks.

On Mon, Nov 24, 2008 at 4:43 PM, laryn91 <caymus91@mac.com> wrote:
> My Aries modular VCOs have a triangular core that also forms the square and
> sine output.
> There's a second sync'd core for sawtooth output (so no glitch). It's their
> differential
> transistor tri-to-sine converter that makes the high quality sine output.
>
> Moog, Arp, Polyfusion, etc. all used this standard circuit to make their
> high quality tri-to-
> sine conversions. Looking at Doepfer schematics, all his oscillators (except
> the quadrature)
> use that cheap simple diode converter. I'm guessing Dieter chose this for
> cost rather than
> quality reasons. I was expecting the expensive High-End VCO to be better
> quality.
>
> BTW, I was really tempted to get Tip-Top, but that video shows a distorted
> sine even
> worse than Doepfer! Makes me wonder about the design quality inside...
>
> --- In Doepfer_a100@yahoogroups.com, Argitoth <argitoth@...> wrote:
>>
>> So far I think from best to wrost, (but I'm not so sure) it's
>>
>> 1. Plan B VCO Sine (good)
>> 2. Tip Top Audio VCO (a little better than Analogue Systems? Never
>> owned one of these)
>> 3. Analogue Systems VCO Sine (bad)
>> 4. Doepfer A-110 (worse)
>>
>> Laryn91, your vintage MODULES or your vintage tabletop/rack/keyboard
>> synths? Don't forget that all my filter modules produce very clean
>> sines. Also, I believe the quality of the sine has to do with its
>> oscillator core. I think to get a clean sine requires a second VCO
>> within a VCO... as in, one module has to house two different
>> oscillator cores. One for square,tri,saw, and another separate one for
>> sine... but I don't know anything about circuit boards, this is just
>> my guess. I think this is easily done in a self-contained synth like
>> your vintage gear because it's one whole system, not a bunch of
>> modules... or something... know what I mean?
>>
>
> 



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