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Old 5th February 2018, 07:13 AM   #51
MJ Dijkstra is offline MJ Dijkstra  Netherlands
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Join Date: Apr 2005
Location: Utrecht
Originally Posted by tyu View Post
But can you tell us what one small crack in the wires insulation, would do to the sound?...
How would a diyer... go about finding the crack if you could not see it even in the dark?....
An get to it too fix ?.....with out pulling the speakers apart?
I have only seen 3pr Audiosats.... only owned one pr of the 100s....but on all of them the top an bottom... were the wire bins to run up an down....there were minny cracks in the insulation in the bind.... an you could see wire inside...
I like the look...killer ...as good as ESl get...well to me..

But as with the Martin logan panels if there is a pin hole in the front or back stater....an it burns in the mylar...the panel lose output an you cant get it back....even if you can find it in the dark..from the spark..
just saying...

Funny Jim Strickland Acoustat full rang panels .... used PVC insulation on his wires...over 30 years....never seen one panel stop working from any wire leek, damage...but I have only had 40-50ea Acoustat panels...

But I seen a LOT of Audiostats....that look like show room stock.. stop working an some-most cant be fixet...well buy Diy guys an gales..........

just one mans finding
Even if the wires would show cracks at the point where they make a strong turn that wouldnt harm because it is not anywhere near the high voltage parts.
I agree that poor insulation is a a tough situation to deal with as a diy. I remember that old panels of the brand final were tricky in this respect.
I use a nenon oscillator at the output of the high voltage. I guess a poorly insulated panel would show rapid blinking of the neonlight. Maybe someone here has a better testing procedure.
drs M.J. Dijkstra
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Old 5th February 2018, 03:19 PM   #52
tyu is offline tyu  United States
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Join Date: Jul 2009
Thanks for any an all input on getting ESL panels an interfaces-bias V to work better....realy...
As for this one mans ears, an the nenon oscillator ....For poorly insulated panels...leeking...bias... would show rapid blinking of the neonligh.....

I never have needed any lite..drive me nuts...,....to tell me my ESL panels leeks!
I get it....Quad showed us all about this in the 1950s....but I see this as a wast....why....
My Quad 57s red neon flashed all the time...but the speakers still palyed....I Just don't get how it make it better for me-you-anyone.. to see theres leeky panels.....
But I am just one guy...
So have fun...an Diy for ever...an good luck with the Audiostatic...thay look great.... just not for me.....life just to short...
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Old 12th April 2018, 06:15 PM   #53
swallabat is offline swallabat
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Join Date: Apr 2013
Well, folks. I am the guy who now owns the ES400's previously mentioned.

I found that the mylar on teh duff one is very perforated, (although in fairness to Ian I didn't spot it myself, a collgue who has more experince showed me. In due course, (maybe months, I have a backlog of ESL63 rebuilds to do first), and this will be physically BIG task requring a large clear working area..

What has piqued my curiosity, is how quiet the "good one" is!

I'm hoping the other one also turns out to be stuffed (although it sounds OK), because if I refurb them and they are still as quiet with the amplifiers I have at my disposal, (Quad 405's and other similar ~100WPC amplifiers) they won't be staying long with me.

Are there any resources I can access to tell me how much power they are supposed to eat, and how many db's that power should produce?
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Old 5th May 2018, 06:23 PM   #54
bolserst is offline bolserst  United States
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Location: Fort Worth, Texas
I have not measured the ES-400s, but all Audiostatics I have measured had similar sensitivity.
I would anticipate they will be about 3dB quieter than ESL63s when driven with the same amplifier and volume setting.
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Old 5th May 2018, 06:43 PM   #55
WrineX is offline WrineX  Netherlands
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Location: Den Haag
Originally Posted by bolserst View Post
I have not measured the ES-400s, but all Audiostatics I have measured had similar sensitivity.
I would anticipate they will be about 3dB quieter than ESL63s when driven with the same amplifier and volume setting.
i think so to 83-84 dB if perfect. and mostly of that is the
mid/treble range
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