Using the Clark Regulator in a tweed twin Options

[mad dog]

Hey Bob, Michael et al. A question on the Clark Regulator. I finally have an amp worthy of attenuation, a '57 tweed twin RI. It has a 4 ohm output. I have located a guy with a 4 ohm Clark Regulator for sale, realize I have no idea of how to wire it up. Input and output jacks ... two wires coming from the OT. How do I make this work, after mounting it?

Thanks for your help
Michael D.

[Jonas]

Hey Micheal, not exactly sure what you have going on there, but I'll try to help the best I can

Two wires coming from the output transformer? I'm not very familiar with any of Fender's RI stuff, but if that's the case, they need to have a 1/4" plug on the end. That will go to the input of the regulator, probably labeled "amp". The wires from the speaker also need a 1/4" plug on them, that goes to output of the regulator, or "speaker".

Now, I might be off base, because I haven't seen every regulator that Mike has ever built. But if yours was made in the last 6 years, then the above instructions will work.

There might be one other problem though. I've never seen that schematic, and I'm pretty sure it's not exactly like anything they built in '57, but there's probably some negative feedback to a presence circuit (possibly a control but not necessarily). You don't want to disconnect this in order to install a regulator. If it's necessary to disconnect the OT leads from somewhere inside the amp, you might want somebody to look at it first.

Hope that helps, best of luck.

Jonas

This post has been edited by Jonas: Dec 1 2009, 10:18 PM