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

Multi-Way Conventional loudspeakers with crossovers

speaker impedence
speaker impedence
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 12th May 2006, 02:27 PM   #1
inrank is offline inrank  United Kingdom
diyAudio Member
 
inrank's Avatar
 
Join Date: Oct 2005
Default speaker impedence

hi, is there an easy way to measure the impedence of a speaker driver?

thanks
  Reply With Quote
Old 12th May 2006, 02:34 PM   #2
richie00boy is offline richie00boy  United Kingdom
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
speaker impedence
An ohm meter will get you in the ball park of the nominal impedance. Otherwise you need to do a sweep against frequency and plot the curve.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 12th May 2006, 02:36 PM   #3
inrank is offline inrank  United Kingdom
diyAudio Member
 
inrank's Avatar
 
Join Date: Oct 2005
its just for an idea of finding out what the impedence for my Tannoy TS8 sub is so that i could use different drivers, tannoy wont give me any 'techinical' details about the amp!
  Reply With Quote
Old 12th May 2006, 03:15 PM   #4
Nigel Goodwin is offline Nigel Goodwin  England
diyAudio Member
 
Join Date: Jul 2005
Location: North Derbyshire
Quote:
Originally posted by inrank
its just for an idea of finding out what the impedence for my Tannoy TS8 sub is so that i could use different drivers, tannoy wont give me any 'techinical' details about the amp!
Just measure it's resistance with a multi-meter, it will read about 75% of it's nominal impedance, so a 4 ohm driver will read about 3 ohms, and an 8 ohm driver will read about 6 ohms.

If you did do a sweep and plot the curve it's only going to confuse you MUCH more - as it makes it less clear really!.
__________________
Nigel Goodwin
  Reply With Quote
Old 12th May 2006, 06:24 PM   #5
richie00boy is offline richie00boy  United Kingdom
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
speaker impedence
Yes now that I see what you're actually wanting to achieve just use a meter.

Bear in mind if the sub is vented you need to do deeper investigation into driver specs and box tuning. There might also be some equalisation in the sub that you need to consider.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 12th May 2006, 06:28 PM   #6
inrank is offline inrank  United Kingdom
diyAudio Member
 
inrank's Avatar
 
Join Date: Oct 2005
http://www.diyaudio.com/forums/showt...threadid=79451
its sealed, planning on using either the same driver in the same sized cabinet, or use a different driver in abigger enclosure.
  Reply With Quote

Reply


speaker impedenceHide 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
Testing a speaker's impedence Austin Duggan Multi-Way 14 19th April 2008 03:09 PM
Does shielding on speaker wire really mess with impedence? The Paulinator Multi-Way 11 19th November 2007 02:33 PM
Speaker impedence Sammich Solid State 17 2nd July 2007 02:21 PM
Wurlitzer side man Speaker Impedence? Newpaltzwonder Instruments and Amps 4 31st March 2006 01:53 AM
Speaker impedence and amp THD--the connection is...? Bill F. Solid State 9 31st May 2002 09:27 PM


New To Site? Need Help?

All times are GMT. The time now is 02:33 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki