ELS Construction Questions

fperra · 15th October 2011, 05:19 AM

I'm getting ready to build myself a couple of ELS speakers and would like to use the inner tube method for tensioning. I'm thinking of building my panels with perf steel 15" wide by 54" tall. Can I get a bike tire large enough for this size? My design will be very similar to Jazzman's, but with 2 10" woofers per side.

chinsettawong · 15th October 2011, 12:24 PM

I doubt that you will be able to find any inner tyre of that size.

fperra · 15th October 2011, 03:33 PM

That's what I'm thinking. So far the largest I can find is 29" in diameter. I don't think I could stretch that over the film stretching jig.

bolserst · 15th October 2011, 08:50 PM

Quote:

Originally Posted by fperra

That's what I'm thinking. So far the largest I can find is 29" in diameter. I don't think I could stretch that over the film stretching jig.

Evidently some people have had success gluing inner tubes together for larger stretching tables.
Building question - Panel Matching

Building question - Panel Matching

If you want to use mechanical stretching for tensioning your diaphragm, another option is to use the tape + fish scale method that ER audio uses. Here is a blog with a good writeup on the method.
Jason's DIY Audio: DIY Electrostatic Loudspeakers / ESLs - The Diaphragms

Alternatively, you can use heat to shrink the diaphragm after attaching it to the frame.

Kontra · 05:58 PM

two bicycle balloon, crude rubber, cut two, put one on another
Building question - Panel Matching - this link - fully correct

fperra · 16th October 2011, 07:37 PM

Thanks for the info. I was thinking of giving that a try. Any links to wire stator construction. I made some electrostatics quite a few years ago from Sanders' original article in the Audio Amateur with the perforated steel stators. I still have 4 of the output transformes he recommended in that article. I might stick with the pef steel stators, but will also consider giving wire stators a try if I can come up with a simple jig for wire spacing. Magnet wire would seem a good choice.

geraldfryjr · 16th October 2011, 08:51 PM

I had Made some stators using some TIG wire and what did was I made a comb using the same TIG wire to hold the longer pieces in place while I soldered in the supporting braces.

I have not finished these yet but atleast the stators are done.

Few · 17th October 2011, 01:01 AM

This is an approach I used with magnet wire, for what it's worth:
Christening a new ESL wire stretcher

Few

15th October 2011, 05:19 AM	#1
fperra diyAudio Member Join Date: Jan 2008 Location: Lakewood, WA	ELS Construction Questions I'm getting ready to build myself a couple of ELS speakers and would like to use the inner tube method for tensioning. I'm thinking of building my panels with perf steel 15" wide by 54" tall. Can I get a bike tire large enough for this size? My design will be very similar to Jazzman's, but with 2 10" woofers per side.

16th October 2011, 05:56 PM	#5
Kontra diyAudio Member Join Date: Jul 2006	two bicycle balloon two bicycle balloon, crude rubber, cut two, put one on another Building question - Panel Matching - this link - fully correct __________________ Hare Krichna! Hare Rama! Last edited by Kontra; 16th October 2011 at 05:58 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cabinet Wall Construction Questions	Loren42	Multi-Way	16	1st March 2010 02:05 PM
BIB questions (construction and otherwise)	crappyjones123	Full Range	11	23rd August 2009 06:14 PM
Construction Questions	bluegti	Full Range	1	28th April 2006 04:54 PM
Construction questions	TonyW	Multi-Way	3	16th June 2005 03:29 AM
Orion Construction Questions	¿GotJazz?	Multi-Way	3	6th October 2004 04:44 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

15th October 2011, 12:24 PM	#2
chinsettawong diyAudio Member Join Date: Jun 2006	I doubt that you will be able to find any inner tyre of that size.

15th October 2011, 03:33 PM	#3
fperra diyAudio Member Join Date: Jan 2008 Location: Lakewood, WA	That's what I'm thinking. So far the largest I can find is 29" in diameter. I don't think I could stretch that over the film stretching jig.

16th October 2011, 07:37 PM	#6
fperra diyAudio Member Join Date: Jan 2008 Location: Lakewood, WA	Thanks for the info. I was thinking of giving that a try. Any links to wire stator construction. I made some electrostatics quite a few years ago from Sanders' original article in the Audio Amateur with the perforated steel stators. I still have 4 of the output transformes he recommended in that article. I might stick with the pef steel stators, but will also consider giving wire stators a try if I can come up with a simple jig for wire spacing. Magnet wire would seem a good choice.

17th October 2011, 01:01 AM	#8
Few diyAudio Member Join Date: Apr 2004 Location: Maine, USA	This is an approach I used with magnet wire, for what it's worth: Christening a new ESL wire stretcher Few

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)