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In Reply to: NFB and Joule OTL posted by MikeJ on January 27, 2005 at 06:23:13:
Hi,> I would merely like to point our that Joule OTLs have a knob
> that can increase/decrease NFB, although I do not know to what
> degree. That said, I find this amp exceptional (the VZN-80) and
> for the record, I also use Welborne Laurel SET and Manley SET/pp
> amps (in SET mose, the Manley also offers controllable NFB).Hmmm. Not sure about Joule and Manley, the Laurel Amp's I heard where okay sounding, but far from great.
> Proper mating with speakers is, as we all know, the key element.
Not sure I'd agree. Most competently designed Speakers will operate with very little power (as the only practical ways to make speakers with low compression and distortion tends to increase efficiency and sadly also bulk) and only need to be correctly impedance matched by the amplifier, which may be a problem for (some?) OTL's but is not one for transformer output SE Amp's.
Negative feedback in "long loops" may make an Amplifier more tolerant of incompetently designed speakers, but at a cost in sonic quality.
Ciao T
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Follow Ups
- Re: NFB and Joule OTL - Thorsten 07:18:12 01/27/05 (0)
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