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Old 21st January 2004, 06:12 PM   #1
bbksv is offline bbksv  United States
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Default Electrostats

I was thinking about building a set of electrostats but was wondering if you can drive them with regular solid state amps????
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Old 21st January 2004, 06:23 PM   #2
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Yes you can. Use an amp which drive a difficult load.
Read Roger Sanders Electrostatic Cookbook. He has some usefull thoughts about the matter.
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Old 21st January 2004, 06:44 PM   #3
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Check this link

http://www.ele.tut.fi/~artoko/audio/...rs/hybrid.html
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Old 22nd January 2004, 04:02 PM   #4
jmateus is offline jmateus  United States
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Default Insulation for stators

I was reading the page about ESL and the subject INSULATION
for the stators stroke me again because I'm looking for an
insulator readily and easily available and I still don't know any
answer for my questions.
Mentioned on the page is Polyethylene coating for the stators.
Does any of the members know what is the brand name this product is sold under and where can I find it?
I'd appreciate any info
Thanks
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Old 22nd January 2004, 06:10 PM   #5
SY is offline SY  United States
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My guess is that you have to buy the steel with this coating already on it. Polyethylene can only be dissolved in hot chlorinated aromatic compounds (toxic, dangerous, extremely difficult to handle), so would normally be applied in a melt form or as a powder which is sintered. That's a major process, not accessible to the home constructor.
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Old 22nd January 2004, 06:34 PM   #6
sreten is offline sreten  United Kingdom
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Default Re: Electrostats

Quote:
Originally posted by bbksv
I was thinking about building a set of electrostats but was wondering if you can drive them with regular solid state amps????
Certainly not your average solid state amplifier, ideally a SS
amplifier specifically designed for high capacitance and low
impedance loading in the treble would be ideal.

But as always, you get what you pay for, a good load tolerant
design will show its true colours driving an electrostatic over
the more average competition.

sreten.
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Old 22nd January 2004, 07:14 PM   #7
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Quote:
Originally posted by Leeuwarden
Yes you can. Use an amp which drive a difficult load.
Read Roger Sanders Electrostatic Cookbook. He has some usefull thoughts about the matter.

Okay, let's quote myself
I used this amp: http://www.thel-audioworld.de/module/acuso/acuso.htm
(sorry, only in German I'm afraid. Try Babelfish if you like)

I think it depends on the behaviour of the electrostat which amp to use. A Quad ESL-63 does well on a Quad 606 Power-amp.
I think a 606 is not that special. I once heard an Audiostatic 100 driven by a Bryston (4b???) amp. It did the job very well.

Roger Sanders writes in his book: Take the biggest amp you can get.
I think he is right. Take the one which can take somekind of "short circuit". (Low impedance)
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Old 22nd January 2004, 07:28 PM   #8
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Default Re: Insulation for stators

Quote:
Originally posted by jmateus
I was reading the page about ESL and the subject INSULATION
for the stators stroke me again because I'm looking for an
insulator readily and easily available and I still don't know any
answer for my questions.
Mentioned on the page is Polyethylene coating for the stators.
Does any of the members know what is the brand name this product is sold under and where can I find it?
I'd appreciate any info
Thanks
You probably mean "powder coating"
This kind of coating can be found on (for instance) motorcycle frames or (garden) fences. If you want this you must find a specialised company who has the equipment. (motorcycle store's usually know where...). If you found one go buy your preferred size of perforated metal sheets and bring the sheets to this company. They will coat it for you. Process is simple: Put electricity on the metal sheets and cover them with powder. Put them in an oven and you are ready to make your ESL panels!
Powder coating can not be done by a diy-er.
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Old 22nd January 2004, 09:56 PM   #9
markp is offline markp  United States
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Places that do anodization usually do powder coating. Its done using static charging to attract a fine powdered plastic to the metal surface being coated. It is then heated to melt the plastic evenly all over the surface.
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Old 7th February 2004, 06:13 PM   #10
GeorgeS is offline GeorgeS  United States
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"Powerder coating can not be done by a diy-er"

I haven't done it but there are DIY systems -

http://www.harborfreight.com/cpi/cta...emnumber=42802
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