MOTM

i'm having trouble figuring out how the 910 is supposed to work.
according to the site description it can be configured as 4 individual
1 in - 3 out.  and if you click into the jack above the arrow, it
breaks the chain going down.  somethings not working right for me.

i have a patch from in1 of a 109 going into the first jack on the mult
(top left)
then i'm taking outputs from 2 filters into the same mult group
if i have both outputs plugged in i only get one output.
if i pull out the one that's working, i get the other output.

if i put the in1 of the 190 into the jack above the top arrow it
appears to stop the flow going down but i still can get both to work.

i'm really confused.

- chris

it sounds like you are trying to use your mult as a mixer.
a mult is intended to split one output many ways, NOT the other way around.

i put a diagram in the group photos folder "miscellaneous", called "910".
this will help you understand how the jack normalling works on the mult.




--- chris walcott <chris@...> wrote:

> i'm having trouble figuring out how the 910 is supposed to work.
> according to the site description it can be configured as 4 individual
> 1 in - 3 out.  and if you click into the jack above the arrow, it
> breaks the chain going down.  somethings not working right for me.
> 
> i have a patch from in1 of a 109 going into the first jack on the mult
> (top left)
> then i'm taking outputs from 2 filters into the same mult group
> if i have both outputs plugged in i only get one output.
> if i pull out the one that's working, i get the other output.
> 
> if i put the in1 of the 190 into the jack above the top arrow it
> appears to stop the flow going down but i still can get both to work.
> 
> i'm really confused.
> 
> - chris
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 
> 



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On 4/26/08, chris walcott put forth:
>i'm having trouble figuring out how the 910 is supposed to work.
>according to the site description it can be configured as 4 individual
>1 in - 3 out.  and if you click into the jack above the arrow, it
>breaks the chain going down.

While your description seems correct, imho, the stock legend is
wrong.  I should rewire mine when I get a chance.

>somethings not working right for me.
>i have a patch from in1 of a 109 going into the first jack on the mult
>(top left) then i'm taking outputs from 2 filters into the same mult group
>if i have both outputs plugged in i only get one output.
>if i pull out the one that's working, i get the other output.

In general, you can mult outputs, but you can't mult inputs.  To send
several outputs to the same input you need a mixer.  For example you
can send the output of one 190 to the inputs of several filters, but
you can't the output of several filters to the input of one 190
(without a mixer).

>if i put the in1 of the 190 into the jack above the top arrow it
>appears to stop the flow going down but i still can get both to work.

Now I'm confused :)  You can get both to work, or you can't get both to work??


On 4/26/08, Stephen Drake put forth:
>
>Multiples only work for cv's.

Mults work for audio.  They also work for clocks, gates, triggers,
etc.  Again, while there are exceptions, you can mult outputs, but
you can't mult inputs.  For example, you can mult the output of one
VCO to several filters, VCA's, etc. without any problems.

A multiple is nothing but wires connecting patch cords together.  Since 
the outputs of most MOTM modules have 1K series resistors on them, a 
standard also used by Electronotes expressly for this very reason, they 
can in fact be mixed together in a multiple.  The current draw will be a 
little higher, but this does not present a problem.  Voltages combined 
by this means do not sum in the same way that they do in a mixer.  If 
you take the example of two VCO outputs being patched together, each 
presents a 1K load to the other.  This means that each output level is 
50% of normal, which has a useful effect of limiting the overall 
levels.  It also means there is a 50/50 mix of the two signals.  Mix 
three and each would contribute 1/3 of the result.  Of course you have 
no control over the proportion of the mix.  For that you would need to 
use a mixer module with pots to adjust the relative levels of each input.

Richard Brewster
http://www.pugix.com

Mark wrote:

> In general, you can mult outputs, but you can't mult inputs.  To send
> several outputs to the same input you need a mixer.  For example you
> can send the output of one 190 to the inputs of several filters, but
> you can't the output of several filters to the input of one 190
> (without a mixer).
>