Electromechanical subtractive crossover? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

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 4th October 2004, 11:19 PM   #1
Mr Evil is offline Mr Evil  United Kingdom
diyAudio Member
Join Date: Aug 2004
Location: Behind you
Default Electromechanical subtractive crossover?

I just came across the idea of subtractive crossovers, and on reading about them the first thing that popped into my head was that they could potentially be used as a form of error correction. Imagine the following:

A 3-way active speaker system. First the input signal is low-pass filtered and fed into the woofer. The woofer's output is measured using whatever sensor is convenient. This is then subtracted from the input signal, delayed, low-pass filtered at a higher frequency and fed into the mid-range driver. Repeat the same up to the tweeter.

Ideally, all distortion from the woofer is cancelled by the midrange, and all midrange distortion is cancelled by the tweeter, leaving the only distortion products up very high, hopefully above human hearing range. Of course it's not going to be perfect in reality, and I would imagine it would require more precise measurements to align everything than most people here would have access to, but still perhaps the idea would be useful to someone.
  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
Piezo vs electromechanical tweeters polsol Multi-Way 61 1st June 2016 12:28 AM
Active Subtractive XOs phase_accurate Multi-Way 107 20th September 2007 06:17 AM
Question to the electromechanical specialists crazyhub Multi-Way 18 3rd June 2007 01:28 PM
Subtractive Crossover for PA richie00boy PA Systems 22 15th January 2007 05:24 PM

New To Site? Need Help?

All times are GMT. The time now is 10:10 AM.

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