Omnidirectional midrange driver - will 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 29th October 2007, 10:51 AM   #1
el`Ol is offline el`Ol  Germany
diyAudio Member
 
Join Date: May 2005
Location: Bavarian Forest
Default Omnidirectional midrange driver - will it work?

Hello all!

Some time ago I had an idea for an omnidirctional midrange driver complementing a 4Pi-style 360° ribbon tweeter. The conductors are placed vertically, like ribbons, lying between neodymium blocks. The retracting force is maintained by the folds, similar to a conventional spider. The surround material across the folds prevents the air from being pressed out. The whole construction is held by the upper and lower surround.
But I ask myself:
The air gap is narrower than the one of a ribbon, but wider than in dynamic drivers. Is the moving mass to high to get it done with today`s magnet technology?

Oliver
Attached Images
File Type: jpg omni.jpg (20.3 KB, 439 views)
  Reply With Quote
Old 29th October 2007, 12:32 PM   #2
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
I believe that a T-shaped ribbon has been proved to work, also resulting in a narrow gap, but I am sure it has its own flaws too, one would be both flexibility and stability of the "ribbon", especially the the part in the gap could be suspect to instability, and the result could be high distortion
  Reply With Quote
Old 18th November 2007, 09:23 PM   #3
expert in tautology
diyAudio Member
 
bear's Avatar
 
Join Date: Apr 2002
Location: New York State USA
How is the force being applied to the radiating surface?
(where's the "voice coil"?)

The materials used will determine the mass.

What maintains the curvature?
What is the distance between elements?

_-_-bear
__________________
_-_-bear
http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- [...2SJ74 Toshiba bogus asian parts - beware! ]
  Reply With Quote
Old 19th November 2007, 08:00 AM   #4
el`Ol is offline el`Ol  Germany
diyAudio Member
 
Join Date: May 2005
Location: Bavarian Forest
The conductors ("Leiterbahn") are placed in the edges of the folds, between the magnets, extending vertically. The force is applied to the surface by the V-shaped folds. The curvature has to be maintained by the cylinder itself, maybe aluminium, that´s why I have doubts about Mms.
Diameter is 12cm or so.
  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
Best midrange driver, 4-way? daniels Multi-Way 7 15th January 2008 01:09 PM
L-pad attenuator for midrange driver 6 1/4 inch driver rhythmdiy Multi-Way 0 4th November 2007 03:32 PM
best hi-end midrange driver joz Multi-Way 48 31st October 2007 01:20 PM
Which driver for the midrange B4 Multi-Way 5 11th November 2005 10:07 PM
Which midrange driver to work with Audax HD-3P? Spherion Multi-Way 17 4th January 2003 11:50 AM


New To Site? Need Help?

All times are GMT. The time now is 08:18 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