Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

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
Reply
 
Thread Tools Search this Thread
Old 4th December 2010, 08:06 PM   #11
diyAudio Member
 
Join Date: Feb 2004
Location: Caen - France
The treble panel is now re-built, using Elvamide. And a new sheet of mylar stretched with more than 50kg.
No hum any more...

I still have some leakage but not that much and localized on a bass panel, near one metal support. If I push the bass panel this disappears. Some simple insulation and it will be gone.
I read somewhere "you don't imagine what can conduct at 6kV". This is indeed truth !
My advice for this: take your multimeter and check voltage at these locations. You might be surprised. One precision:I am using high voltage probe thus with input load > 1000MOhm. This might be important. I did not check with standard probe (10MOhm).
__________________
Quad fan ! One hobby: re-build ESL 57
  Reply With Quote
Old 5th December 2010, 04:32 AM   #12
diyAudio Member
 
alexberg's Avatar
 
Join Date: Oct 2009
Fabien,
what is your recipe for Elvamide?
My experience shows that alcohol soluble nylon does not stay on membrane
(at least without some nasty additives)
BTW naphtalene, widely used before against the mole, is much more
dangerous in respect to phenol. The second one is not cancerogenic
  Reply With Quote
Old 5th December 2010, 08:40 AM   #13
diyAudio Member
 
Join Date: Feb 2004
Location: Caen - France
Quote:
Originally Posted by alexberg View Post
Fabien,
what is your recipe for Elvamide?
My experience shows that alcohol soluble nylon does not stay on membrane
(at least without some nasty additives)
BTW naphtalene, widely used before against the mole, is much more
dangerous in respect to phenol. The second one is not cancerogenic
Indeed I read that some people had issues with Elvamide.

My experience is completely different: I am using Elvamide with Ethanol (widely available in drug store) and this works great !

Difference is certainly in preparation: I am using a hot stirring plate each time.
I wash the mylar with acetone as well before applying Elvamide.
Finally adherence is really good. For example when I want to remove it from
outside of the panel or because I fell I did not put enough, it's not that easy even with acetone.
I am using as well a precise scale for preparation but I do not think this is key.
Note that even with a hot stirring plate preparation can be as long as one hour for perfect dillution. But not a problem as the device is making the job for you. Thus I imagine that some people lack patience if doing it by hand.
__________________
Quad fan ! One hobby: re-build ESL 57
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quad ESL 57 panel refurbish: DIY or not? Franz Gysi Planars & Exotics 50 4th February 2013 07:20 PM
WTB: Quad ESL-63 Treble Panel jeffx Swap Meet 2 6th September 2010 10:39 PM
How is Quad 57 Treble Diaphragm Charged? markzb Planars & Exotics 8 16th May 2009 06:02 PM
QuAD ESL 57 Stators/panel - German ?? dude007 Planars & Exotics 7 16th January 2008 02:00 PM
Quad ESL-57 (pair) TimA Swap Meet 2 14th November 2005 11:34 AM


New To Site? Need Help?

All times are GMT. The time now is 02:19 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2