MCA SP1 Mic. Schematic available anywhere?

[777funk]

I'm wanting to add a HPF to this thing. Does anyone have a schematic for it?
thanks in advance!

 

[Khron]

Ahem...

https://www.google.com/search?q=mca...v4DSoQ_AUoAXoECAIQAQ&biw=412&bih=647&dpr=2.63
At least on mobile, the second (top-right) result looks a lot like a schematic to me, on a TapeOp forum thread about the SP1.

Do you want to have that high-pass switchable, or permanent?

https://img.audiofanzine.com/image....e&size=normal&module=user&userPhoto_id=269209

 

[777funk]

Ahem...

https://www.google.com/search?q=mca...v4DSoQ_AUoAXoECAIQAQ&biw=412&bih=647&dpr=2.63
At least on mobile, the second (top-right) result looks a lot like a schematic to me, on a TapeOp forum thread about the SP1.

Do you want to have that high-pass switchable, or permanent?

https://img.audiofanzine.com/image....e&size=normal&module=user&userPhoto_id=269209

Thanks! I had seen that before posting the thread but it says MXL603... maybe the same circuit. I notice some things look different (certainly different values) on my SP1 LDC (it's a LDC since I swapped the capsule a while back). I will look a little closer. I see that they switch two caps on/off in the example. I may have to do that as well. I was hoping for a single cap value change.

 

[RuudNL]

About the MXL603 schematic: D5, D6 and D40 are not 1N4148, but zener diodes.
( A 1N4148 as D40 wouldn't make sense.)
Also R50 isn't 2K. It is 500K or 1 M.