[quote name='geoffbyrne' post='864270' date='Jun 11 2010, 12:54 PM']I had a Maine guitar head & 2x12 sealed cab for a long time - the cab was 16 Ohm & the amp produced about 65 w through it, but would go down to 4Ohms & round about 150w.
Later, when I took up bass, I found an open-backed Maine Guitar & Bass 2x12 combo on Ebay with McKenzie speakers. The guitar channel was wonky but the bass channel was huge!!! So huge it blew the speakers after about 3 weeks of playing out. The other problem was it's weight - I was 15 1/2 stone at the time & could barely move it - I had to put a couple more handles on the sides & get help to move it.
The guitar head I had had that constant 'suzz' underneath that most of the Crate Powerblocks exhibit & I wouldn't be surprised if the power amp chips used were of the same family.
Certainly have a look at it, but listen carefully to the amp & beware open-backed cabs used for bass.
Geoff[/quote]
The Maine things wouldn't have used power amp chips, way before them! They'd almost certainly be 2N3055 type transistors, like most solid state stuff of that era (HH etc.) readily servicable.
They were made in Watford, on Rickmansworth road iirc
I Knew someone who has a job briefly testing the units with a guitar as a final QC check. I think they went down late 70's/early 80's, but I also remember them being solid reliable gear.