Shack ESL Site: Anyone deal with this firm? - Page 2 - diyAudio
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Old 30th January 2010, 02:30 AM   #11
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Join Date: Jan 2010
Location: Ontario
Quote:
Originally Posted by harry_at View Post
The Maestro for this coating is the man behind post#2 in this thread.

I have a stretching jig similar to the one from Quad (including an oven for the heat treatment). See attachment.

Harry
Hi Harry,

That is an awesome stretcher jig!!!

Where did you get the clamps to hold the film - I've experimented with clamps and 3 micron film, however, the film slipped through the jaws of the clamps.

It seems that weights/gravity with the constant tension on the diaphram is the way to go - the "frame type" jigs with wing nuts for tightening seem to be a compromise (from my experiments).

I'd be interested in reading more about your stretcher jig (I mean if you are ok with making the details available to the public).

I am a newbie here - how do I contact The Maestro (MJ Dijkstra) on this site regarding the coating (ie. what is the etiquette).

Thanks for sharing your knowledge regarding Quad ESL 63 coating/stretcher - it is making it worth while to have lost those 8 panels to the Shackman firm and now I can pursue rebuilding my Quad ESL 63's via the DIY route.
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Old 30th January 2010, 06:23 PM   #12
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Location: Austria
Quote:
Originally Posted by Few View Post
Hi Harry,
That's a beautiful diaphragm stretcher.
Thank you.

Quote:
Originally Posted by Few View Post
Do you heat treat and stretch at the same time or mechanically stretch and then heat treat in the oven afterward?
First I stretch the diaphragm in the jig and then afterwards it gets the heat treatment. But during the treatment the weights are always pulling. So it's a mixture of mechanical and thermal treatment at the same time.

Quote:
Originally Posted by Few View Post
I'm trying without success to imagine inserting your stretcher into an oven.
Please stop imagining. Yes, it is not possible to put a 2 meter long stretcher into an oven.
BTW I have never liked to do it that way.

Harry
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Old 31st January 2010, 09:29 AM   #13
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Join Date: Jun 2006
Location: Austria
Quote:
Originally Posted by Cognition View Post
I am a newbie here - how do I contact The Maestro (MJ Dijkstra) on this site regarding the coating (ie. what is the etiquette).
Click to his contact info and send him a PM or email and ask if he still produces the EC-coating.

Quote:
Originally Posted by Cognition View Post
now I can pursue rebuilding my Quad ESL 63's via the DIY route.
I would also recommend the Esl-63 kit from Rob Mackinlay. Much easier to do it that way. Especially for beginners.

Here a link to someone who has used this kit successful for repairing (the original link is down, but I have found it in the Wayback Archive).

Harry
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Old 2nd February 2010, 09:21 AM   #14
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Join Date: Jun 2006
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Quote:
Originally Posted by harry_at View Post
Here a link to someone who has used this kit successful for repairing (the original link is down, but I have found it in the Wayback Archive).
I have seen that two pictures are missing in this link (especially the one where the diaphragm is stretched with the help of a spring balance). See attachment.

Quote:
Originally Posted by Cognition View Post
Where did you get the clamps to hold the film - I've experimented with clamps and 3 micron film, however, the film slipped through the jaws of the clamps.
Working with 3 micron film is tricky. Try these clamps. They are looking slightly different than the European ones, but should be the same.

Harry
Attached Images
File Type: jpg tensioning_with_spring_balance.jpg (36.4 KB, 297 views)
File Type: jpg coated_diaphragm.jpg (59.6 KB, 289 views)
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Old 10th February 2010, 12:19 PM   #15
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Join Date: Jan 2010
Location: Ontario
Quote:
Originally Posted by Cognition View Post
Hello,

Has anyone had contact with the Shackman ESL site;

Reromanus Shackman Electrostatic Loudspeakers Online Catalogue

Back in the fall of 2009, I corresponded with the owner of the site to get some of my Quad ESL 63 panels rebuilt - now, I can't get hold of the owner and am still waiting for my panels.

I tried phoning and sending emails.

Perhaps the owner is ill or the site is no longer supported.

Thanks for any information.

Greg
Update...

I finally received my refurbished panels from the Shackman site/firm!

The items were extremely well packaged.

I have yet to try the panels and will be looking into trying them during the Easter long weekend.

I will update this thread once I have the panels in my Quad ESL 63's for a while.
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Old 10th February 2010, 12:57 PM   #16
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Location: Ireland
So where is a good place in Europe to buy 3um film for use as dustcovers for an ESL63?

Fran
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Old 10th February 2010, 06:26 PM   #17
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Quote:
Originally Posted by woodturner-fran View Post
So where is a good place in Europe to buy 3um film for use as dustcovers for an ESL63?
One Thing Audio in England for example. They have 2.8um film (from Germany).

Harry
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Old 10th February 2010, 06:44 PM   #18
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Quote:
Originally Posted by Cognition View Post
I finally received my refurbished panels from the Shackman site/firm!
Good news!

But it is still very strange from Mr. Römer not to answer a customer phone call or email.

Harry
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Old 10th February 2010, 06:56 PM   #19
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Many thanks Harry_at,

I've checked their site and they seem very reputable.....

The dustcovers on one of my friends 63's are rattling at some low bass notes so I want to get some film to fix them before any damage is done....

Fran
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Old 10th February 2010, 07:27 PM   #20
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Quote:
Originally Posted by woodturner-fran View Post
The dustcovers on one of my friends 63's are rattling at some low bass notes so I want to get some film to fix them before any damage is done....
Are the dustcovers damaged?

If not, then a simple treatment with a heat gun will retighten the dustcovers.

Harry
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