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Old 24th April 2007, 08:51 PM   #1
diyAudio Member
Join Date: Apr 2004
Location: Malmoe, Sweden
Default Esl Tube Amp

I'm planning to build a >500 Hz Esl Tube amp for my
treble esl:s, inspired by this speaker:

Anybody who knows were to find schemes or descriptions on a
good design?

Thanks, Jonas
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Old 25th April 2007, 06:29 AM   #2
maudio is offline maudio  Netherlands
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Join Date: Apr 2006
Location: Netherlands
Here's one:

Never tried it myself though, I'm more the solid-state-kind-of-guy
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Old 25th April 2007, 12:02 PM   #3
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Join Date: Aug 2006
John broskie has suggested that a scaled-up version of his second electrostatic headphone amp would be a good ESL amp.


Not sure how much voltage you will need to swing for the mid/treble panel, perhaps 1000v? As drawn, that schematic will swing about 500v stator-stator.

I have heard it said that a panel over 2sq.feet in area, with a stator-diaphragm spacing of 1/16th inch,. and a bias of 1500v is good for down to 300Hz.
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Old 27th April 2007, 10:53 AM   #4
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Join Date: Jan 2005
Location: Berlin
Hi Jonas,

mybe this is from help:

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Old 27th April 2007, 11:02 AM   #5
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Join Date: Jan 2005
Location: Berlin
this is the one for the tube amps:
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