Thanks JM, I'm going to do that for sure. I just need to decide how I want it to look. Thanks again for your help.  
Oh, I almost forgot, I was thinking about 2 x 12's, , with the tweeters you were talking about, but then 4 x 10's seemed workable too - what do ya think?
Rich

I play in a band and we play small to medium gigs and occasionally a party or wedding - the only thing is, we don't have a PA, so I was thinking of somehow turning this amp (and preamp) into a PA. Maybe I would encase the amp into a "head" and then make a cab like this one (http://www.instructables.com/id/Building-a-Solid-pine-wood-finger-jointed-guitar-/) or this one (http://www.miyakodesigns.com/sidestripe.html). I have done a lot of woodworking in the past, but think it would work? It might not be loud enough though - any suggestions? Thanks

I also have a Behringer GMX212 (120 watts) that the first one (the black one) would match nicely with. I play a LP through it and it sounds pretty good about half way up - but it's not clean enough when we play a show because I have to crank it almost all the way.  

 

I can't believe you found that - thank you! 

Not too bad - thanks for the help  :tu:

Here's the top-view for anyone who is interested:

Yes, the transistors are 40409 and 40410. The outputs are RCA 40411 (TO3 NTE181) which I guess means it's 70 watts per channel?

I inherited what looks like a 1970's kit-amp and I really need help finding out what it is. There is no writing on it of any kind except for "Radio Filter" imprinted on a small box connected to the power cord. It was my father's (who was an electrical engineer), and it was "bundled up" with a Southwest Technical Products Corporation (SWTPC) "198/A Preamp" (found here: http://www.swtpc.com/mholley/Catalog6/Page01.jpg). I searched the internet for pictures of SWTPC kit-amps of that era, but had no luck. I know my dad built both of them, so I would love to put them to good use, but I don't want to hook them up without knowing more (especially about the power amp).
Thanks in advance!

The following pictures are:
(1) Amp front-exterior (2) interior (3) Filter? connected to cord (4) rear-exterior
   

Thanks J M - I really like the two 100W amps w/ second cabinet idea. My Behringer has two 70W 12" Jensens - do you think those would work for the second cab?

I'm in a band that plays a "funky & jazzy" style of reggae & ska. I would like to get the best amp to play those styles live. I am currently playing through a Behringer GMX212 because it was the loudest thing I could afford at the time. I have a Strat and LP. We play house parties (we don't have a P.A., so I need decent volume) and bars occasionally. Now I have a little more money though - around $350 plus the value of my Behringer - and I would like to get something better (and cleaner!) A friend says I should find a used Roland JC-120, but since I have some experience with electronics, I'm toying with the idea of building an amp. Any suggestions? Tube or trans?
Thanks for your help