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Subject: Re: Mother of All Bandpass?

From: "Dave Bradley" <daveb@...
Date: 1999-05-14

> From: "Paul Schreiber" <synth1@...>
> The current design of the '410 filter has the LFO ouputs running "in
> parallel" to all
> three filters. They are equally summed, so there is a MASTER depth, but no
> individual DEPTH. All filters move the same amount (they just
> have different
> center freqs).
> PROPOSAL (this will make Dave happy!)
> Go to a 3U wide.
> Replace the LFO DEPTH pot with 3 individual DEPTH pots.
> Add 3 LEDs. The LEDs are analog. The brighter they glow, the higher that
> associated bandpass filter frequency is (no bitching if this seems
> "backwards". )
> The LEDs would pulsate at that filter's LFO rate. (in German: "Das Lites
> gablinky!")


> Add LFO OUT jack for other module fun.

Hmmm, I thought we already added this. Remember, to get synchronized stereo
panning externally, this jack is required. It's already on the mocked up
image, anyway!

> Added kit cost $30-$40. We are now in the $229 kit arena.

That's a bargain for 3 more pots and lights.

> Another way: 3 slightly different summing resitotors (narrow,
> mediium, wide
> sweep). Free.

I could go with this option also, I just want the gablinky lights!

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.