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In Reply to: need more like 6000V to 7500V across posted by Penguin on January 1, 2014 at 08:30:44:
It may be true that you need more than a 4000V swing to drive the SL's adequately, but not because of Watts, I don't think. Once you remove all the power sucking components in the back plate and now also eliminate inefficiency associated with a step-up transformer, I think the speakers will be very happy with much lower Watts, more like 50W or less. I think (emphasis on "think") the extra volts are needed to make the diaphragm respond, because I am told that the SLs have an unusually wide gap between stator and mylar, so as to permit deep bass response. That's why you need that huge bass step-up transformer that SL uses. If 4000V is fine for a Quad, I doubt it is sufficient for a full range Sound Lab speaker. But I would yield to RM of course, in terms of knowledge on this subject, assuming he knows the ins and outs of Sound Lab speakers.
Edits: 01/01/14
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Follow Ups
- Are you referring to the Sound Labs? - Lew 12:51:06 01/01/14 (4)
- hmmm - Penguin 13:16:18 01/01/14 (3)
- Where do you get 4 ohms? - Lew 14:43:45 01/01/14 (2)
- 4 ohms - Penguin 10:44:58 01/02/14 (1)
- RE: 4 ohms - Lew 11:56:46 01/02/14 (0)
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