Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

quad esl's delay lines
quad esl's delay lines
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
Thread Tools Search this Thread
Old 26th July 2005, 05:44 PM   #11
Brian Beck is offline Brian Beck  United States
diyAudio Member
Brian Beck's Avatar
Join Date: Dec 2004
Location: South Florida, USA
Bret, I've toyed with notions of conjoined vertical panels, each adjacent panel delayed, and also panels divided into smaller vertical stirips, each adjacent strip delayed. As for bass, I'm looking into a non-dipolar design with a few other tricks in mind. I'm not nearly ready to claim victory with this set of new design ideas, so I'm going to say little more until I have something that works enough to tell about.

Charles, which commercial design with the aluminum rods and RC "delays" are you referring to?
  Reply With Quote
Old 27th July 2005, 06:50 AM   #12
phase_accurate is offline phase_accurate
diyAudio Member
Join Date: May 2002
Location: Switzerland
Charles, which commercial design with the aluminum rods and RC "delays" are you referring to?
I'll try to remember.


  Reply With Quote
Old 1st August 2005, 10:55 PM   #13
I_Forgot is offline I_Forgot  United States
diyAudio Member
I_Forgot's Avatar
Join Date: Jan 2005
Location: Phoenix, Az.
Has anyone actually measured the inductance of the coils in the delay lines?

  Reply With Quote
Old 18th August 2005, 06:11 PM   #14
orjan is offline orjan  Sweden
diyAudio Member
Join Date: Mar 2005
Location: Stockholm
Well not measured...but, according to Peter Baxendal in Loudspeaker and Headphone Handbook the inductors has a nominal value of 3H. Further he says the lattice cap and the cap in the coil combined is about 132pF giving the delay line a characteristic impedance of 300kohm
Then "the air-cored inducters are sufficiently close spaced for mutual inductence between them to be very significant..."
Also pointed out the coils has a few shorted turns to damp the delay line.

Last I would recomend reading the chapter on electrostats in this book (isbn 0
240 513711) if you are interested in quad electrostats 57 and 63. Most theory so if you want building instuctions read another book.

Now if someone could measure the resistance in the coils..I think it can be done just measuring on the pcb.
  Reply With Quote


quad esl's delay linesHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
echo, reverb using bucket brigade delay lines from panasonic kASD Solid State 20 6th April 2011 12:37 AM
Transmission lines jj Multi-Way 3 29th March 2009 09:58 PM
How 'bout them sig lines? Pano The Lounge 4 6th December 2008 05:56 PM
Anybody using PVC T-Lines??? jjkozlow Multi-Way 5 23rd March 2004 11:26 PM

New To Site? Need Help?

All times are GMT. The time now is 01:34 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio