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 2nd May 2011, 06:54 AM   #1
Arno Pf is offline Arno Pf  Netherlands
diyAudio Member
 
Join Date: Jan 2008
Default ESL Mylar stretching Tension

Wat tension is correct when stretching the mylar foil?

My two full range ESL's differ in SPL whereas the resonance frequency is comparable (coating is 100% ok). Compensating with Bias voltage works but it still puzzles me if it is better for a full range ESL to have a low tension and a lower bias voltage to avoid sticking to the stators.

What is your experience in this?

Thanks in advance,

Arno
  Reply With Quote
Old 2nd May 2011, 08:59 AM   #2
markusA is offline markusA  Sweden
diyAudio Member
 
markusA's Avatar
 
Join Date: Dec 2009
Location: Gothenburg
Blog Entries: 1
From what I've read on this board I think 2-4% stretch is appropriate.
I'm gearing up for my first build myself so I can only repeat what I seem to remember reading.
Hopefully you can get some better advice from people with real experience.
It'll be interesting for me as well.
  Reply With Quote
Old 2nd May 2011, 11:28 AM   #3
diyAudio Member
 
Join Date: Apr 2005
Location: Utrecht
Quote:
Originally Posted by Arno Pf View Post
Wat tension is correct when stretching the mylar foil?

My two full range ESL's differ in SPL whereas the resonance frequency is comparable (coating is 100% ok). Compensating with Bias voltage works but it still puzzles me if it is better for a full range ESL to have a low tension and a lower bias voltage to avoid sticking to the stators.

What is your experience in this?

Thanks in advance,

Arno
Hi Arno,


Could you check the drive voltages of both esls?

To answer your question; lowering bias voltage will decrease efficiency. Rob de Lugt (audio4) once made a very wide esl bass panel with rather low polarization voltage. The result was amazing low bass but at very low soundpressure as well
__________________
drs M.J. Dijkstra

Last edited by MJ Dijkstra; 2nd May 2011 at 11:37 AM.
  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
Who sells mylar for ESL 57 ? Fabien Lefebvre Planars & Exotics 5 6th March 2010 08:42 PM
stretching Mylar for curved ESLs, How? MJ Dijkstra Planars & Exotics 4 7th June 2006 06:34 AM
ESL: Mylar 4 micron vs Polyester 3.8 micron michaelpage26 Planars & Exotics 12 26th July 2005 12:43 AM
Source for ESL Mylar in Canada Zenith_Nadir Planars & Exotics 4 10th June 2005 05:10 PM


New To Site? Need Help?

All times are GMT. The time now is 12:34 AM.


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