[sdiy] Superwave P8

[Scott Gravenhorst]

"drheqx" <drheqx at heqx.com> wrote:
>Scott Gravenhorst wrote:
>
><3 VCO's. They can be pretty thick>
>
>I want ultra thick, but I think I will take your advice and use René
>Schmitz's oscillators. Just to review. You are saying that you can add
>as many oscillators as you like right? Will the load from the multiple
>oscillators need to buffered, or is it OK to run all of them from the
>same point in the circuit as you did with yours? 

Yes, the same point, this is the buffered pitch CV output.  There is a
practical limit to how many VCOs can be connected because each one draws
current from the buffered source.  So the buffer's opamp has to be able
to supply it.  If you're going to get real crazy, buffers might be a
good idea.  I've had as many as 4 VCOs connected (without additional
buffers) with no problem.  The symptom will be flat pitch especially on
the high end of the range.  I'd throw them on it and check for flatness.
 I'd also make sure to test each VCO as one of 3 VCOs to make sure that
they are good throughout their entire range.  Then if you have problems
with flat VCOs, stick in a couple of buffers to split the CV into
branches.  OpAmp Offset might cause some headaches doing that, but it
should be trimmable.

>Scott this is a weird coincidence, but while searching for your site I
>ran into this other site. If you look at the bottom of the list of soft
>synths at the right you will notice something.
>
>http://www.geocities.com/synthaholic/

Hmm.  That's not me, no P8 here, and it seems he's coincidentally used
the same moniker.  

>
>
>
>
>Karl Dalen wrote:
>
><The P8 are designed by the use of "synth edit" program, they sound the
>same and are boring>
>
>Ouch! I did a few small synths in Synthedit and I do agree that unless
>you spend a lot of time on them you get a boring sound. So many of them
>are very close that I try to avoid them. When all is said and done the
>P8 is ultra thick because of the "Superwave". I need that sound in my
>Fatman so I have to give it a shot.
>
>
>Roy J. Tellason wrote:
>
><You wanna talk about *thick*,  back when I was working on this sort of
>stuff in the NYC area for a music store there I once had _three_ ARP
>2600s all done and on the bench at the same time.  So I patched 'em
>together,  and had _nine_ oscillators all talking at the same time.
>Never heard anything quite like it. >
>
>Assuming you mean that in a good way. I think we are getting somewhere.
>I was considering up to 12 oscillators in my Fatman because I have
>twelve concentric pots mounted already and the Supwerwave has 7
>oscillators so I have to outdo that.
>
>Thanks for the responses gents. I return to my soldering with a fierce
>look in my eye.
>
>heqx
>
>
>
>
>
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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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