MOTM

Oops, you are correct, forgot to carry the 1...it is 80 filters.

  To make one HP-LP pair you would use two of these 1U modules, similar to 
using two 420s.  There is a switch to select HP/LP, so one is set to HP, 
the other to LP, and for true Yamaha effect set the HP filter to 1/2 
tracking (and LP tracking to 1).

  Of the 4 filters in a GX1 voice, three of them are the same (or nearly
so); those are the NE-10400 and NE-10500 potted modules.  The BP filter
(NE-11000), which has voltage-controlled frequency but fixed resonance, I
do not have available to study, though I can infer a great deal from the 
other filters.

Crow
/**/

On Thu, 18 Mar 2004, edibennardo wrote:

> --- In motm@yahoogroups.com, The Old Crow <oldcrow@o...> wrote:
>  
> Not clear, are you just saying that we could use two HP-LP pairs, so 
> twice the same 1U module? (similar to the use of two 420) or you are 
> also talking of a second 1U module to duplicate the HP or the BP or 
> maybe both other two filters of the GX1?
> Enrico