I have a Beta 105 (15" speaker, 4 ohms, 100w) that I got a great deal on and had the opportunity to hook an amp up to and it sounded great. I've had my eye on a Beta Lead for quite a while and was hoping to get another similar sized speaker and have one channel of the Beta Lead go to the Beta 105 and another go to another similar hypothetical speaker.
The beta is a two channel amp, but it's not stereo. You can't have the "one channel of the Beta Lead go to the Beta 105 and another go to another similar hypothetical speaker" because you only have a mono power amp, only one output.
After much research, it appears that similar Sunn speakers of that size (this eBay auction, for example) are also 4 ohms:
http://cgi.ebay.com/Vintage-1979-Sunn-Beta-Lead-Beta-202-Cabinet_W0QQitemZ250195509599QQihZ015QQcategoryZ118983QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Research is telling me that I probably wont be able to run this Beta 105 simultaneously with another speaker on a Beta Lead due to the 2 x 4 ohms = 2 ohms scenario (if I've understood that correctly). Should I give up on the idea of running this Beta 105 with another speaker on a separate output on a Beta Lead, or is there some way I can pull this off with a "slave" amp of some sort? If I buy a Beta Lead will I have to purchase two entirely different speakers?
You could run the cabs in series to one output on the beta, but you would cut the power amp's output almost in half. You could rewire the 2X12 in series and wind up with a nominal load just
under 4 ohms (but probably safe) if you plugged both cabs into a beta but, the 12's would only be getting 10 watts or so each, while the single 15 would get 80ish. If you used a beta slave, you could run 100 watts to them both @ 4 ohms, and also "have one channel of the Beta Lead go to the Beta 105 and another go to another similar hypothetical speaker", as the beta has seperate outputs for the preamp channels.
