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Seller say`s "FOR SALE IS A VINTAGE PAIR OF WORKING HIFI STEREO SPEAKERS. UNKNOWN MAKE. CONTROLS ON BOTTOM OF CABINETS. SPEAKERS ARE ABOUT 3.5 FEET TALL BY 2 FEET WIDE BY 2 FEET DEEPAND VERY HEAVY" . Just curious , Any ideas ?
Those things sure made their way around the industry, even very early Peavey 22A compression drivers used them, and you could find them double stacked on some high power Becker and Oaktron woofers too.
Just some general thoughts. I did not recognize these as CTS woofers like the others did, and I'm no expert. But I have some CTS woofers and I like 'em. If you like that 'vintage' sound, as others have consistently warned me when telling me I should 'not' like them.
From the dimensions given, it appears that the woofers are 15" (or bigger?). 15 inch woofers tend to produce more (not to say 'better') bass than smaller woofers of that era. As for efficiency, I have no idea, but in general, speakers from the tube era into the beginning of the transistor era are often quite efficient. At one time, that was considered good.
I think they look very interesting, and I'd love to see how they work out for you if you get them.
I think it should be fine. If the bass alignement was taking into account a high output impedance from the amplifier and that your SS amp seems to sound anemic on these, try a small series power resistor, maybe 2-4 ohm.
I passed on the speakers when I saw another post on CL .A Toshiba SA-7150 . It was in the other direction and I got it for the same price that I was going to pay for the speakers . I will post a thread tomorrow . It was closer .