Vinyl Asylum

Wiring this transformer as SUT

71.87.34.219

I've decided to hook the Raunland mic in put transformers up and see what happens. I turned over the amp and drew a schematic. I don't have a way to scan it, and drawing it out in ASCII would probably be unreadable. So, here is what I found:

XLR pin 1 --- tranny pin 1 ---- amp ground
XLR pin 2 --- switch
Switch pos. “high” = grid of 12AX7 via .47uf cap
Switch pos. “low” = XLR pin 2 to pin 3 of tranny and tranny pin 7 to grid of 12AX7 (via cap)
XLR pin 3 to tranny pin 5

Tranny pin 4 connected to tranny pin 1 via .47uf cap
Also connected to grid of 12AX7 via a resistor
Tranny pin 6 is tied to 4 via a resistor and a weird jack marked “RC”

If I had a scanner, I’d scan the schematic I drew.

SUT wiring guesses:
Pin 1 = - input and output
Pin 3 = input +
Pin 7 = output +
But what do I do with 5, tie it to 3? And is 4 tied to the ouput -?

Any help would be appreciated. Otherwise I'm going to wire it up somehow and hope nothing breaks.

pj

Follow Ups:

RE: Wiring this transformer as SUT - Peter H-son 11:15:02 05/13/08 (1)
- RE: Wiring this transformer as SUT - Paul J. 19:57:58 05/13/08 (0)
Go tube/DIY forum to get help! - cheap-Jack 08:44:23 05/13/08 (0)

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