DIY electrostatic speakers for dummies - Page 4

GDJ · 23rd April 2011, 12:49 AM

Wow.
Simply "WOW!"

geraldfryjr · 23rd April 2011, 01:53 AM

It is amazing as to what you can do with enough determination.
I made those in the winter of 05-06 and then got stupid with a DUI and that set all of my projects back awhile.
I'm not afraid to admit my to mistakes hoping that it will stop some one else from doing the same, As I had learned the hard way !!! jer

GDJ · 23rd April 2011, 02:33 AM

You and me both. Had to learn by trial and error, and sometimes error and trial......in front of my peers.

GDJ · 23rd April 2011, 02:36 AM

Hey, speaking of copper mesh, check this stuff out:
Copper Blocker - Lee Valley Tools

This would be plenty fine and open enough for the stators?

geraldfryjr · 23rd April 2011, 02:52 AM

I can't get I good closeup on it.
I might be copper clad.
I wonder what size the holes would be once it is stretched taut?
It is only 5" wide but you never know.
I wanted to try using some rabbit screen material,the galvinized stuff with 1/4" square holes.
I once had source for some that had 1/8" square holes and would be perfect but I can't seem to find it anywhere now. jer

GDJ · 23rd April 2011, 02:56 AM

It appears to be a tube of copper mesh from the pics, which if it is, would give me a 10" wide swath of loose mesh. It looks pretty fine gauge. Would this pose a problem with the power supplies being too high for the gauge of wire(s)?

chinsettawong · 23rd April 2011, 03:20 AM

Wow! That takes a lot of time and patience to solder all those rods together.

Wachara C.

geraldfryjr · 23rd April 2011, 03:27 AM

No, The gauge wouldn't be a problem but if the wires are kinky the sharp edges will be a big problem with sharp points causing areas that will arc over very easily.
You want a material that can produce a uniformly flat surface with no sharp edges or points. jer

GDJ · 23rd April 2011, 04:28 AM

Okay, so theoretically I spread this stuff out, take a flat roller and flatten it. This I can deal with.

geraldfryjr · 23rd April 2011, 05:12 AM

Try it! You will never know unless you do.
I can't say for sure because I don't have A good close up of the material.

But chance are you might have a hard time getting it to be perfectly flat as close tolerances are required.

Typicaly < 5 mil and no more than 10mil over the entire span of flatness to keep the diagphram stable and 15mil is realy pushing it but may be acceptable.

But you never know, so check it out and let us know what you find. jer

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23rd April 2011, 12:49 AM	#31
GDJ diyAudio Member Join Date: Oct 2007 Location: Edmonton, Alberta, CANADA	Wow. Simply "WOW!"

23rd April 2011, 01:53 AM	#32
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	It is amazing as to what you can do with enough determination. I made those in the winter of 05-06 and then got stupid with a DUI and that set all of my projects back awhile. I'm not afraid to admit my to mistakes hoping that it will stop some one else from doing the same, As I had learned the hard way !!! jer

23rd April 2011, 02:33 AM	#33
GDJ diyAudio Member Join Date: Oct 2007 Location: Edmonton, Alberta, CANADA	You and me both. Had to learn by trial and error, and sometimes error and trial......in front of my peers.

23rd April 2011, 02:36 AM	#34
GDJ diyAudio Member Join Date: Oct 2007 Location: Edmonton, Alberta, CANADA	Hey, speaking of copper mesh, check this stuff out: Copper Blocker - Lee Valley Tools This would be plenty fine and open enough for the stators?

23rd April 2011, 02:52 AM	#35
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	I can't get I good closeup on it. I might be copper clad. I wonder what size the holes would be once it is stretched taut? It is only 5" wide but you never know. I wanted to try using some rabbit screen material,the galvinized stuff with 1/4" square holes. I once had source for some that had 1/8" square holes and would be perfect but I can't seem to find it anywhere now. jer

23rd April 2011, 02:56 AM	#36
GDJ diyAudio Member Join Date: Oct 2007 Location: Edmonton, Alberta, CANADA	It appears to be a tube of copper mesh from the pics, which if it is, would give me a 10" wide swath of loose mesh. It looks pretty fine gauge. Would this pose a problem with the power supplies being too high for the gauge of wire(s)?

23rd April 2011, 03:20 AM	#37
chinsettawong diyAudio Member Join Date: Jun 2006	Wow! That takes a lot of time and patience to solder all those rods together. Wachara C.

23rd April 2011, 03:27 AM	#38
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	No, The gauge wouldn't be a problem but if the wires are kinky the sharp edges will be a big problem with sharp points causing areas that will arc over very easily. You want a material that can produce a uniformly flat surface with no sharp edges or points. jer

23rd April 2011, 04:28 AM	#39
GDJ diyAudio Member Join Date: Oct 2007 Location: Edmonton, Alberta, CANADA	Okay, so theoretically I spread this stuff out, take a flat roller and flatten it. This I can deal with.

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23rd April 2011, 05:12 AM	#40
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	Try it! You will never know unless you do. I can't say for sure because I don't have A good close up of the material. But chance are you might have a hard time getting it to be perfectly flat as close tolerances are required. Typicaly < 5 mil and no more than 10mil over the entire span of flatness to keep the diagphram stable and 15mil is realy pushing it but may be acceptable. But you never know, so check it out and let us know what you find. jer