I've got a modded 73 Traynor YBA 1 which is pretty much the same thing as a JTM45 or a bassman. I also have a 112 closed back cabinet with no speaker that I want to use with it. I'm looking for good meaty cleans and low gain lead tones -- allman bros, grateful dead, etc. I'm pretty much committed to WGS for my 12" speaker needs as every single one I've tried has been right on the money for what I wanted (except for an ET65 in a modded hot rod deluxe) - been rocking the ET65 vet 30 combo in my main 212 cab and I absolutely love that pairing.
What are the best WGS options for the single 112 on my Traynor? I've been kinda thinking about the high powered greenback.
I'd pick the ET65
see:
http://wgs4.com/bassman-speaker-shootouts-short-n-sweet
I'd have to recommend the ET65 also.