Peavey Century 120 booster jack

[John Sankalis]

Acquired an "early" 60 watt version of this amp. I have the schematics but am still confused as to where the jack is supposed to be wired in. At this point...there isn't one. I see where a wire goes from the jack to the "pin" on the PC board on the power amp. I've seen a couple of pictures of the guts of the 120/200 series. Where the yellow wire goes isn't so clear. This amp seems to have a great love/hate argument. Hoping someone can help with the missing wiring. First post and Thanks for any help you can provide.

 

[Giffro]

You could try asking this question over there in the US Peavey Club...lots of clever helpful folks in there. Link below...
U.S. Peavey Club

 

[Dino Boreanaz]

I'm replying to bump this up in hopes that someone can help out the OP.

I recently sold my Century 120 or I would have opened it up to verify this, but here's how I believe it should work ... someone please correct me if I'm wrong.

The booster signal on these amps is taken off the voltage dividing resistors (22k & 1k) at the output. So the booster jack's tip terminal should connect to the node between these two resistors and the booster jack's sleeve terminal should connect to ground.

 

[John Sankalis]

Thanks for the replies and suggestions. Much appreciated. From pictures I've seen, there were even differences between the 120 and 200. Besides the additional 2 power transistors. Have a Great Day all!

 

[John Sankalis]

Well......my Century is dead. Power light comes on....but no output. Was hoping to run the preamp into an outside power amp via the booster output.
Still no output. Was told "it just stopped working". Looks like something liquid got knocked over. Thanks for all everyone's help in getting it sorted. Condition is a solid 8 in my opinion, just doesn't work.