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In Reply to: RE: BBC Sound posted by goldenthal on April 05, 2014 at 14:41:31
Interesting speaker. A friend had a pair about 30 years ago, BC2 woofer as midrange with Celestion tweeter and super tweeter(instead of STC super tweeter with a 12" woofer below. It's a heck of a woofer. Same basic design is still used today and was once used up to 1800 Hz in a 2 way. What amp do you use? The BC3 was a difficult reactive load so hard that Wireless World said that if an amp drove them it would drive anything..
Follow Ups:
I use 2 Mc 275s, bridged and connected off their 4-ohm taps. I used to connect as 8-ohm, but I imagine to myself that the 4-ohm taps sound better. But in the past, in a smaller room, I successfully used a Dyna St-70 that I wired myself from kit. (Nostalgia is a wonderful thing -- thank you.)
I don't know if I still possess Mr. Hughes's specs, but I think I recall that the woofer was used to a very high frequency in the BC3 as well.
Jeremy
Good amps to drive them. The woofer was used to about 400 Hz but to 1800 Hz in the 2 way. Of course in those days 400 Hz was a low crossover point. The famous AR2ax crossed to the mids at 2000 Hz which makes it a tweeter to me. The original AR3(not 3A) crossed at 1000 Hz.
I think it was in the first issue of Stereophile that I ever saw (may not have been the first issue) that your friend Gordon recommended both the Dyna and the Mc amps. I became a JGH addict approximately instantly, not because of the recommendations but because of the writing.
J.
Gordon was the best. He had a great ear. He wrote beautifully. He had a sense of humor. And while he considered himself non-technical he had a wonderful sense of how things worked even if he wasn't that good with the arithmetic.
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