MOTM

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.

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

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

Well?

Paul S.

Hell, its modular. Load it up and go for the extra features. However, I
would buy either one (since it will be 2 years into the MOTM expereince
since I know anything anyhow). <g>

BTW, I finally got started on the oscillators. I am building both at the
same time, so I am still in the resistor stage. Based on available time
and rate of progress, I will be middle of next week I suspect (unless I
just totally ignore the 10" tall grass).

Where was that resistor print error in the instructions? I have not found
it yet.
Larry H.

----------

> From: Paul Schreiber <synth1@...>
> To: MOTM listserv <motm@onelist.com>
> Subject: [motm] Mother of All Bandpass?
> Date: Thursday, May 13, 1999 11:59 PM
>
> 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.
>
> Added kit cost $30-$40. We are now in the $229 kit arena.
>
> Another way: 3 slightly different summing resitotors (narrow, mediium,

wide

> sweep). Free.
>
> Well?
>
> Paul S.

> 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!")

Definitely!

> 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.
daveb@...

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

Yes! I would by this over the previous proposal.

I'll vote for the 3 space 410 unit also.

I like the additional control options, and, of course the LED's.

Hows about a rotary switch for the "single/dual/dual-rev" switch. It may
balance out the real estate.


Blink away brothers!


Mark Tencza

Hi Paul n All !

Go for 3u, add 3 jacks that break each lfo->depth control . Since
the lfo has an out, combining this with an envelope and reinjecting
it could be fun . Without global FM in this would make fixed
bandpass possible, giving a triple resonator :)

Also add resonance CV jack and depth control, not original, but hey
(if technically possible :) )

Bye .


Keep 'em oscilating :)


Hugo
=