Opposing voice coils? - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 6th November 2008, 01:41 AM   #1
JCoffey is offline JCoffey  United States
diyAudio Member
 
Join Date: May 2003
Location: Atlanta, GA
Default Opposing voice coils?

OK, this is me bored and day dreaming. But, has there ever been a sub driver with multiple voice coils? I dont mean a DVC motor, but a driver with multple motors, lite 3 or 4 one on each edge to control movement, or a driver with a motor and voie coil on either side of the cone to control distortion and movement to lower distortion?
  Reply With Quote
Old 6th November 2008, 04:03 AM   #2
diyAudio Member
 
Join Date: Dec 2007
I believe that Philips has a patent on a multiple voice coil speaker. It was designed to serve as a physical embodiment of a DAC. That's right, a digital direct drive loudspeaker! However, I would imagine that for them, getting the voice coils to overlap as closely as possible was a design goal (e.g. to minimize non-linearities in the drive system).
  Reply With Quote
Old 6th November 2008, 02:54 PM   #3
Luke352 is offline Luke352  Australia
diyAudio Member
 
Join Date: Jul 2006
Send a message via MSN to Luke352
Do you mean something like this http://www.diymobileaudio.com/forum/...ad.php?t=48223

Works very well, lowers distortion, lowers inductance, and due to it's nature helps prevent overhang/overextension due to the electromagnetic braking force that comes as a result of the design.

Patent was done in 97-98 http://www.patentstorm.us/patents/57...scription.html

  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
corroding voice coils pdan Full Range 15 30th August 2007 01:11 PM
Voice coils - too many, all must go. Toddy Audio Swap Meet 3 31st December 2003 03:46 AM
Dual voice coils Opie Multi-Way 1 19th December 2002 04:38 PM
paralleling voice coils Opie Multi-Way 1 15th November 2002 01:41 PM


New To Site? Need Help?

All times are GMT. The time now is 03:19 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