distributed resonance, does it work? - diyAudio
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 15th November 2005, 09:10 PM   #1
diyAudio Member
 
Join Date: Apr 2005
Location: Utrecht
Question distributed resonance, does it work?

Hello to all,

When I read the Electrostatic Loudspeaker design Cookbook, it is clearly stated that multiple drivers with different membrane tension do not distribute the resonances, but air still treats all the different drivers as one big driver with a single hudge resonance. Does this also apply to a mechanically divided esl?

Within the Martin Logan sequel2 , most of the cells have equal dimensions except for 2 cells at the bottem and the top. Does this ML use different acoustic loading of the air trapped behind the esl between the backwards prortuding panels (these panels are angled) ??? And controlling fundamental resonance this way?
Probably the amplitude of the resonance will be relatively low because the relatively high resonance frequency and the large surface area provide acoustical resistance?!

Has someone measured the response of two differently sized panels mounted at a close distance from each other?

Cheers, MartinJan
__________________
drs M.J. Dijkstra
  Reply With Quote
Old 16th November 2005, 12:57 AM   #2
jam is online now jam  United States
diyAudio Member
 
jam's Avatar
 
Join Date: May 2001
Location: Auburn, CA, USA
.................there you go.

http://www.soundlab-speakers.com/tech_dr.htm


Jam
  Reply With Quote
Old 16th November 2005, 07:07 AM   #3
diyAudio Member
 
Join Date: Apr 2005
Location: Utrecht
Hi Jam,

I've read your link.
It seems (according to soundlab) that there are still individual resonances and not a single large one. For example if soundlab elements have resonances between 100 and 200 Hz, what will happen with a sinuswave tuned at 150 Hz? Because of the individual approach the cell tuned at 150 Hz will resonate while the others will not. This is also clear from the ptcture of soundlab. So this is quite the opposite the way Roger Sanders tells us!

Off topic:
I also have doubts about the resonance behaviour of the soundlabs which have to compromise transient response. I also don't agree with their dispersion charasteristics which can't be smooth from a theoretical point of view.
__________________
drs M.J. Dijkstra
  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
Adjustable distributed load discussion smoking-amp Tubes / Valves 184 1st June 2011 04:28 PM
Distributed Amplifier questions Islandstone Chip Amps 3 6th September 2007 04:56 PM
New idea for distributed power? Stocker Power Supplies 2 26th January 2006 05:53 PM
Distributed mode loudspeakers (DMLs) EC8010 Multi-Way 15 6th May 2005 11:30 PM
Distributed's RC5 moses Everything Else 4 29th September 2002 03:56 AM


New To Site? Need Help?

All times are GMT. The time now is 03:10 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