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

Measuring speaker stuff starting with Thiele-Small parameters
Measuring speaker stuff starting with Thiele-Small parameters
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 11th January 2019, 11:09 PM   #21
Jack Hidley is offline Jack Hidley  United States
diyAudio Member
Jack Hidley's Avatar
Join Date: May 2007
Location: Danville, CA
Measuring speaker stuff starting with Thiele-Small parameters
If you don't want to have to do math to correct your impedance measurements, you can take very accurate impedance measurements with either a pure voltage source or a pure current source. It doesn't matter which one you use.

If you use a current source to drive the speaker under test, the current source returns a voltage back to AP which is directly proportional to the impedance of the speaker. You don't waste an input channel this way and there is no possibility of damaging the input circuits on the AP.

I can post a schematic later if you are interested.
Jack Hidley
  Reply With Quote
Old 12th January 2019, 04:28 AM   #22
DualTriode is offline DualTriode  United States
diyAudio Member
Join Date: Aug 2009
Location: Nor Cal

My initial caution with the APx connections was the absence of directions in the APx software manual and the 1701 installation instructions. Sam at AP was very helpful; he wired it all up on his bench and walked me through it. I will check the voltage with a DMM first.


In the interest of always learning more please share more of your thought process of saving an instrument connection, please tell me more and pass on a schematic.

Thanks DT
  Reply With Quote


Measuring speaker stuff starting with Thiele-Small parametersHide 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
Thiele and Small Parameters Daem Multi-Way 0 16th June 2013 05:40 PM
no thiele small parameters H Burch Multi-Way 14 16th September 2012 01:39 PM
Thiele small parameters for tweeter jericho_tm Multi-Way 3 7th February 2012 09:57 PM
Thiele - Small parameters tomtt Multi-Way 0 25th March 2009 03:48 AM
Thiele-Small parameters Hoffmeyer Multi-Way 6 15th March 2006 02:12 AM

New To Site? Need Help?

All times are GMT. The time now is 08:56 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio