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Subject: Re: Mixer design as of now

From: mate_stubb@...
Date: 2001-03-04

This sounds good to me. So 7 knobs, 1 switch, 8 jacks, right? A
typical full 2U panel.

Do you need a mockup? What do you want the labels to say?

Your thinking behind making OUT2 the 6x1 output is that with only 1
output jack inserted, the main out is at the corner of the module?

Either OUT1 or OUT2 as the 6x1 output works for me. I agree with
Larry that whichever output works as the 6x1, that's the one that the
offset pot must be summed with, so that it can work at all times.

Moe

--- In motm@y..., "Paul Schreiber" <synth1@a...> wrote:
> Here is what I'm about to commit to for the mixer unless someone
else
> convinces me elsewise:
>
> ∗ 2U wide
> ∗ dual 3:1 or single 6:1
> ∗ it splits into dual mode when a jack is inserted into OUT 1
> ∗ DC path. Can mix AC and/or DC. Uses OP285GP amps. This is a lower
> offset/drift version of the OP275GP
> ∗ Has a -5V to +5V DC bias pot, which is switch in/out via panel
switch.
> Only offsets OUT 2.
> ∗ 2 reversing attenuators (1 in each mixer)
> ∗ NO 'master Gain' it takes a dual pot and I'm not going down that
road
> (like 18 weeks lead time).
> ∗ $169 kit/$229 assembled
> ∗easy to build, no trimmers. About as hard as a '420 kit.
>
> Well?
>
> Also: I have some new Switchcraft 113 jacks for sale. The are like
the 112As
> except:
>
> ∗ single open circuit (doesn't have the 3rd shorting lug)
> ∗ has an isoloated N.O (Normally Open) switch (on 2 seperate lugs)
>
> The mixer needs a 113E version, which has a N.C. switch
(grrrrrr.....)
>
> Regular about $2.50ea. I'll sell em for 10 for $8.00 That's cheap!
You don't
> ∗have∗ to use the switch :)
>
> Paul S.