Igor F76 stepped Gain in/out?

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mulletchuck

Well-known member
Joined
Jan 9, 2010
Messages
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Location
Midwood, Brooklyn, NYC
Howdy again.  Not sure why that other thread isn't displaying anything.  Probably because i tried to upload a HUUUUUUGE picture of his schematic.  so, i'm reposting.

I have a pair of these compressors designed by igor.    It uses 10K Log input and output pots.  I'd like to replace them with stepped gain switches like this:   

http://classicapi.com/catalog/product_info.php?cPath=51_133&products_id=238

Steiger handily sells this little guy for just such an application.  before i get to the question of which resistor values to use to simulate a 10K Log, i have another question.  Jeff also has a 25K Stepped Attenuator kit which simulates a 25K Log pot. 

What would be the difference with using a 25K Log pot vs the default 10K Log pot?  If a 25K log pot isn't going to make that much of a difference compared to a 10K...

here's the schematic for reference:

http://img17.imageshack.us/img17/8968/audioschem.png
 
I think its easier to go with changin the resistors than try to change the value of the pot.
But you can try i tried on a gyraf 1176 but i choose the 10K over the 25K ..something to do on the control...
 

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