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Re: List of speakers suitable for OTL amps.

Posted by Ralph (M) on September 25, 2006 at 13:00:59

In Reply to: List speakers suitable for OTL amps. posted by The Killer Piglet on September 23, 2006 at 12:10:51:

Easy to Drive Speakers (works with M-60) that work without the ZEROs:

-a short and very incomplete list-
Quad 57s and 63s, Classic Audio Reproductions, Spendors, ProAc Response series, Merlins, Lowthers, most horns, Talons, JM Labs, nearly all 'full range driver' speakers, Silverline, NHT, Coincident, Wilson Audio, ZU Druids, Gallo, AvantGarde, Reimer, Soliloquy, Vandersteens, IOW if the speaker is 8 ohms in the woofer region and 89 db or more it will probably work...

Works without ZEROs but need more power (MA-1 or MA-2):

Avalon, Sound Lab, Wilson Audio, newer Quads, Magnaplanars, Appogee, MBL (easier to drive than you would think!), Audiostatic, bigger Vandersteens, Kharma, Cabasse, Meadowlark

There's a bit of crossover (no pun blah blah) in this list depending on models in the manufacturer's lineup. As you can see, in the bigger amps 4 ohms isn't such a big deal.

ZEROs can help smaller amps with lower impedances and often the MA-1 too. Anytime you can get the impedance up the amp will make less distortion, but you can run into tradeoffs so the general rule is 8 ohms=0 ZEROs :)

Have fun!

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