Voice coil - diyAudio
Go Back   Home > Forums > Design & Build > Construction Tips
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Construction Tips Construction techniques and tips

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 20th June 2012, 08:58 AM   #1
diyAudio Member
Magnasanti's Avatar
Join Date: May 2012
Location: Georgia
Send a message via Skype™ to Magnasanti
Default Voice coil

when designing a speaker what determines the voice coil wire gauge ive read that the smaller the gauge the more power handling so wouldn't you just get the smallest gauge you could find?
  Reply With Quote
Old 20th June 2012, 10:47 AM   #2
rho is offline rho  Belgium
diyAudio Member
Join Date: Sep 2003
Location: Peer, Belgium
To get the desired impedance the number of windings would have to go up. This increases Mms (moving mass) and Le (inductance of the coil). This is not always wanted.
You also need a wider magnetic gap to fit the bigger coil.

So, it's not just a matter of increasing the diameter of the conductor to get better powerhandling (which is not such a very important parameter in most cases anyway).
A lot more parameters change when you do that.
  Reply With Quote
Old 20th June 2012, 11:09 AM   #3
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
You need sufficient Voice Coil to give the desired nominal speaker impedance.
That Voice acheives it's "impedance" from a combination of resistance and inductance and mechanical capacitance.

The resistance part which is often around 70% to 80% of the nominal impedance is made up by the length and diameter and electrical resistance of the actual winding.
The number of turns and the diameter of the wire (if circular) and the material (usually copper or aluminium) must give that desired Re (the resistive component of the nominal impedance).

All of this has nothing to do with the power handling. The impedance comes first, the power handling will come later.
regards Andrew T.
Sent from my desktop computer using a keyboard
  Reply With Quote
Old 20th June 2012, 11:37 AM   #4
frank1 is offline frank1  United Kingdom
diyAudio Member
Join Date: Apr 2006
Location: Devon UK
Originally Posted by Magnasanti View Post
when designing a speaker what determines the voice coil wire gauge ive read that the smaller the gauge the more power handling so wouldn't you just get the smallest gauge you could find?
If you really are designing a loudspeaker driver, I would seriously consider reading from somewhere else as your source is completely wrong.
  Reply With Quote


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
2 or 3 inch voice coil? Silent Screamer Multi-Way 25 12th March 2012 09:46 AM
Voice Coil TheReaper Subwoofers 4 27th October 2011 05:11 PM
Single Voice Coil Vs Double Voice Coil Subwoofer Workhorse Car Audio 6 12th April 2007 06:36 AM
Going to try winding a voice coil johnthedoctor Parts 15 1st September 2006 12:03 PM
an amp for each voice coil? speekergeek Multi-Way 1 12th December 2003 02:31 AM

New To Site? Need Help?

All times are GMT. The time now is 07:22 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2