MCA SP1 mods

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carnold1

Member
Joined
Sep 13, 2023
Messages
5
Location
Ventura, CA
Hi there. I've read most of the old posts about modding this mic (most recent is 2016 I think). There are a lot of text instructions about switching parts and such, but was wondering if anyone had a schematic of the original with the changes notated schematically? The way my brain works, having a schem to guide me works much better than text notes.
Also, yes, I have one of the old ones with through-hole components.
Thanks in advance for any help!!
-c
 
So all the modding is simply based around the JFET and Transistor changes. No changes to the actual EQ of the circuit.

Strange, my component numbers don't line up with that schem at all...
 
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