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In Reply to: RE: Electrostatic sound propagation posted by George S. Roland on February 02, 2017 at 14:57:03
And don't forget the honeycomb frame the stators are mounted to.
My guess is there is enough surface area to produce sound versus area that blocks sound. I have some old literature that I'll try and dig out to see how Peter Walker came up with the mechanics.
Lots of layers indeed.
back grill cloth
back metal perforated protective grill
back thin solid mylar dust cover
back honeycomb stator frame
back perforated stator
middle mylar diaphram (electrostatically moved by voltage in back and front stator)
front perforated stator
front honeycomb stator frame
front thin solid mylar dust cover
front metal perforated protective grill
front cloth grill cloth
Interesting indeed.
As a test, you'll find any physical sound you make yourself, like clapping behind the speaker, is heard on the other side almost as if there is no speaker there at all. Talk about transparency.
Hope Kent can chime in.
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Follow Ups:
My Acoustats sound much better with the socks pulled down. I have been running them "naked" for years. Don't think they have any dust cover, I can clearly see the mylar through the plastic louvers and stator wires.
Then removing the protective grill would further improve the sound on the Quads. But then your are in "lethal" shock territory.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Removing the protective grills from my ESL 63s made an audible improvement, so they play that way now.
I am careful not to stick my finger through the dust cover.
But...mine are in a dedicated room than is free of cats and kids.
I do run Kent's almost not there socks, which are essentially inaudible.
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