Electrostats

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#4
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
 
#5
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.
 
#6
bbksv said:
I was thinking about building a set of electrostats but was wondering if you can drive them with regular solid state amps????
Click to expand...

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.
 
#7
Leeuwarden said:
Yes you can. Use an amp which drive a difficult load.
Read Roger Sanders Electrostatic Cookbook. He has some usefull thoughts about the matter.
Click to expand...


Okay, let's quote myself :xeye:
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)
 
#8
Re: Insulation for stators

jmateus said:
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
Click to expand...

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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