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In Reply to: RE: Not sure how that relates to posted by E-Stat on March 28, 2024 at 12:21:50
I can relate to electrostatics, in the 80's i made probably a dozen pairs of large panels and built a direct drive tube amplifier for some of them..
It was "fixing" my Boss's ESL-63's in the 90's, that radiate like a point source and the levitation sources at work that made me think more about how sound radiates.
At 4 feet sitting on the floor the ESL63's were excellent but i wanted +10dB capacity and to go down to low bass when present.
So far as the small room design consultants, we do sell to jobs some do but most of the smaller speakers go into the recording and video production area.
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I can relate to electrostatics, in the 80's i made probably a dozen pairs of large panels and built a direct drive tube amplifier for some of them.
I met Jim Strickland in 1976 when he brought a pair of his Acoustat X with 3kV servo amps (using 6HB5 horizontal deflection tubes) to Atlanta for TAS reviewer JWC. There was a dealer there that evening as well and picked up the line immediately. I later worked for him and got mine. Challenge is delivering enough power that way. Those amps were good for about 100 watts each and used a modest TL072 opamp based input stage. Later versions moved to a dual transformer approach (to tame the impedance curve) using your choice of amp. The bias on my current SL stats is variable up to about 12kV depending upon humidity.
At 4 feet sitting on the floor the ESL63's were excellent but i wanted +10dB capacity and to go down to low bass when present.
Such exists today with enough diaphragm area using a scalable design like that of Dr. West. You can make them darn big if you want with controlled radiation. ;)
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Wow!! (in full crocodile Dundee voice) now that's what i call an electrostatic speaker!!
Where was that do you know?
is their controlled radiation over a 22, 45 or 90 degree angle. Like your designs, you can employ either horizontal or vertical arrays to increase coverage. Those are 922s.
LDS Conference Center downtown SLC.
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