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Old 15th March 2020, 12:46 PM   #21
gentlevoice is online now gentlevoice  Denmark
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New speaker project underway
Hi Charlie ...

Before writing more just a brief preamble: About a year ago I completed a CNC mill for making my various audio projects. It works reasonably fine & it allows me to work in most all materials & do many different items. However, I have learned sort of the hard way that it is not enough to draw the items in the 3D modeling software and "then machine them" - setup, rotating, orienting, changing tools etc., etc. all takes time ...

So, when I see the picture of your 8 speakers, and watch the video with an eye for details, I am impressed. Looks like very fine craftsmanship and a lot of work ;-)

Cheers,

Jesper
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Old 15th March 2020, 01:28 PM   #22
clog is offline clog  Netherlands
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Charlie i’m following this thread, have been looking at your website and watched the video’s of the building process. It looks very professional and streamlined. I’m really impressed.
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Old 15th March 2020, 02:23 PM   #23
CharlieM is offline CharlieM  United States
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Quote:
Originally Posted by bolserst View Post
Thanks so much for continuing to share your ESL endeavors.
Looking awesome!
It's mentoring from you, Golfnut, Calvin and others on this forum that made this project possible for me. I'm just happy to pay it forward!
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Old 18th March 2020, 09:55 PM   #24
ani101 is offline ani101  United States
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Hi Charlie

I have followed your build for the ESL speakers which are on your site and always wanted to build an ESL speakers.

I am interested in the drawings and parts list and would like to attempt these sometime this year, but may need to ask you from time to time...
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Old 18th March 2020, 10:37 PM   #25
CharlieM is offline CharlieM  United States
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Gentlevoice, Clog,
Thanks so much for the compliments on my speakers. This project was so much work; it just may be my swan song!

Ani,
Quote:
Originally Posted by ani101 View Post
Hi Charlie

I have followed your build for the ESL speakers which are on your site and always wanted to build an ESL speakers.

I am interested in the drawings and parts list and would like to attempt these sometime this year, but may need to ask you from time to time...
Hello Ani101,
My DIY ESL website (link below) has extensive how-to info-- mostly gleaned from the members on this forum. I share my drawings with anyone who wants them and I enjoy collaborating with other builders.

As you can see; building wire-stator ESLs involves a huge amount of work and some woodworking capability as well. But if you're up for the challenge; I and others here are happy to help. You may find it rather a psychosis :-)

Charlie
jazzman1953@gmail.com

Last edited by CharlieM; 18th March 2020 at 10:42 PM.
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Old 19th March 2020, 06:01 PM   #26
SyBorg is offline SyBorg  United States
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Psychosis indeed! Perhaps a full-on addiction.
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Old 20th March 2020, 10:52 PM   #27
mortron is offline mortron  Canada
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This is an amazing project and the amount of details Charlie M has shared is abundant. I can only gain so much from the videos but they seem to have an effortless sound and wish I could hear a pair myself.

If you could compare them to another panel type speaker, what would be a contender? Or are these best you've heard? I wouldn't be surprised to hear that. Regardless, they are works of art, and accomplish what some speakers fail to do. Very classy.
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Old 21st March 2020, 01:17 AM   #28
CharlieM is offline CharlieM  United States
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Quote:
Originally Posted by mortron View Post
This is an amazing project and the amount of details Charlie M has shared is abundant. I can only gain so much from the videos but they seem to have an effortless sound and wish I could hear a pair myself.

If you could compare them to another panel type speaker, what would be a contender? Or are these best you've heard? I wouldn't be surprised to hear that. Regardless, they are works of art, and accomplish what some speakers fail to do. Very classy.
I'm very fond of Magnapans, which I think sound generally great and they have an edge over ESLs in the lower end of their bandwidth. However; I prefer ESLs because to my ears they are the finest midrange drivers ever. And ESLs in general, not just wire panels, just have a purity and coherence that nothing else I've heard can match.

ESLs lend themselves to DIY better than other driver types in my view. And it doesn't have to be pretty--if the basics are in the ballpark (transformers, diaphragm/stator spacing, open area, diaphragm tension, biasing voltage), a DIY ESL is gonna sound great-- it just will, because it has inherent advantages.

You don't have to be a genius to build an ESL. I have no education beyond high school and practically no math or electronics skills, but I do have very smart and capable enablers on this forum (the real ESL gurus: a.k.a. Golfnut, Bolserst, Calvin, Syborg, Gerald Fry, and a few others) who've made my projects possible for me.

Take the plunge... you won't regret it.
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Old 23rd March 2020, 08:25 PM   #29
CharlieM is offline CharlieM  United States
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Update 3/23/20:

All four pairs of speakers are fully completed except for the magnetically attached grills, which I started building today.

I spent the weekend sound testing every pair... all play to ridiculous volume with no apparent issues. For a $77 woofer; I'm pretty impressed with the Peerless SLS-- I was concerned it wouldn't be up to the task so I only ordered one pair initially. I should point out that so far I've only sound tested them chopped off at 60Hz and crossing into a pair of Ripol subs with a 24db filter slope. Thus unloaded on the bottom end; they rock pretty good without bottoming out at X-max.

Parts Express and most of the free world doesn't have any burgundy colored grill cloth so I was happy to finally locate some 66" x 36" sections on Ebay. That order arrived today and it's only 54" x 36" so-- another delay.

In the meantime-- here's some more porn for you planar pervs:
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Old 26th March 2020, 12:39 PM   #30
CharlieM is offline CharlieM  United States
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Update 3/26/20:

Having a lot of problems with the grill frames. They looked great the day I built them but they bowed after a couple of days and I'm having to redo them. The first time I used white pine stiffeners on the hardboard frames, the second time I used poplar. Both bowed but the poplar bowed a bit less. So I'm cutting the stiffeners off and bonding new stiffeners on with the frames purposely bowed in the opposite direction, hoping they will bow back to near straight condition. I may end up giving them a week or so to stabilize, then cross cutting slots in the vertical stiffeners to relived the bow, and then gluing on some strips to re-stabilize. They will look nice if I can resolve the bowing issue:
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File Type: jpg grill 0.jpg (197.9 KB, 65 views)
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