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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: help me figure out how to do a high ohm OTL system posted by trioderob on June 30, 2015 at 11:51:19:
Use an electrostatic speaker like Quad or Martin Logan. But, you would have to remove the stepup transformer that allows these to be used with regular amplifiers.
http://www.diyaudio.com/forums/planars-exotics/42928-tube-amps-electrostatic-speakers.html
There were also a variety of 600 ohm cone drivers made, by Phillips and others.
I would also suggest just using a Mosfet output stage, in follower mode, biased in Class A. It is basically the same as your OTL headphone amp but much higher current. I would personally avoid the use of current sources, and instead use a choke or a PNP-NPN pair. Mosfets are generally rather messy (nonlinear), but the high degenerative feedback of the follower configuration would tend to cancel that, perhaps without the consequences of other feedback arrangements.
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- Use electrostatics - nl 03:28:07 07/05/15 (0)
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