MOTM

This is my back-burner project which I am slowly bringing to completion.  
As stated before, the '880 is a bipolar EG designed to replace the 
IG00152-based (custom Yamaha IC) EG as used on the CS-50, 60 and 80.  As 
with the CS-80 filter, I hope to see it made into an MOTM module.  One 
issue I am dealing with is that given this EG has voltage-controlled 
everything (A,D,S,R, initial level, attack level, slope shape) as well as 
a manual gate button and bicolor status LED, it is just not practical to 
fit all of the panel hardware onto a 2U plate.

  Therefore, I am proposing the 'MOTM-880E' as an expansion 1U panel to 
the MOTM-880.  Given that the dual OTA in the '880 is left with one unused 
section, it seems a shame to never use it.  The '880E would be a 'OTA' VCA 
normalled to the EG CV, where jacking in an external CV would supercede 
this normalizaion.  I would place the EG's slope shape CV jack on the 
880E, which makes everything else fit nicely on the 2U 880.  The 880E 
would have three signal inputs (2 AC, 1 DC) with an A/B mix knob and a 
separate C level knob, and a CV level knob.  The VCA 
response is linear, given that the EG can provide a variable-slope CV.

  I suppose this could all be made into a 3U panel, but I really want to 
keep the EG to 2U.  The only thing lost if one never adds the 880E is the 
shape CV jack (though, its connection would still be on the PC board--it 
would just need to have a jack mounted elsewhere).

  FYI,

Crow
/**/

I personally would rather it be 3 units wide.  I have other EGs
already, so I'm going to want the extra function.  I just think it
that most people would want the extra function and a 3 unit module
would be cheaper than a 2 unit + 1 unit module.  

Larry

This module will be quite interesting with all the voltage control!  Might I
ask - any ETA?  How about a panel layout?

A single 3U panel with all of the available functionality in one module
would be my preference.  It would certainly look unique.  And I would think
it would cost less than having to buy two modules to get the full CS-80
specs.  Also (in typical MOTM fashion) it would have an extra function - in
this case the extra VCA, which I'm sure would be put to good use.  Excellent
job Crow!

George

----- Original Message -----

From: The Old Crow <oldcrow@...>
To: <motm@yahoogroups.com>
Sent: Monday, June 10, 2002 2:35 PM
Subject: [motm] "MOTM-880" update


>
>   This is my back-burner project which I am slowly bringing to completion.
> As stated before, the '880 is a bipolar EG designed to replace the
> IG00152-based (custom Yamaha IC) EG as used on the CS-50, 60 and 80.  As
> with the CS-80 filter, I hope to see it made into an MOTM module.  One
> issue I am dealing with is that given this EG has voltage-controlled
> everything (A,D,S,R, initial level, attack level, slope shape) as well as
> a manual gate button and bicolor status LED, it is just not practical to
> fit all of the panel hardware onto a 2U plate.
>
>   Therefore, I am proposing the 'MOTM-880E' as an expansion 1U panel to
> the MOTM-880.  Given that the dual OTA in the '880 is left with one unused
> section, it seems a shame to never use it.  The '880E would be a 'OTA' VCA
> normalled to the EG CV, where jacking in an external CV would supercede
> this normalizaion.  I would place the EG's slope shape CV jack on the
> 880E, which makes everything else fit nicely on the 2U 880.  The 880E
> would have three signal inputs (2 AC, 1 DC) with an A/B mix knob and a
> separate C level knob, and a CV level knob.  The VCA
> response is linear, given that the EG can provide a variable-slope CV.
>
>   I suppose this could all be made into a 3U panel, but I really want to
> keep the EG to 2U.  The only thing lost if one never adds the 880E is the
> shape CV jack (though, its connection would still be on the PC board--it
> would just need to have a jack mounted elsewhere).
>
>   FYI,
>
> Crow
> /**/