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

Tool for producing an LCR network that = a speaker+box?
Tool for producing an LCR network that = a speaker+box?
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 26th May 2004, 09:21 AM   #1
CeramicMan is offline CeramicMan  Australia
diyAudio Member
 
Join Date: Nov 2003
Location: Brisbane, QLD
Default Tool for producing an LCR network that = a speaker+box?

Where can I get some software/.xls/calculator that creates an RLC network that emulates any particular loudspeaker, given the T/S parameters and box size?

Basically I'd like to be able to model the shape of a speaker's impedance curve with a few Ls and Cs and Rs.

Thanks!
CM
  Reply With Quote
Old 26th May 2004, 09:29 AM   #2
Svante is offline Svante  Sweden
diyAudio Member
 
Svante's Avatar
 
Join Date: Feb 2004
Location: Stockholm
The impedance will be Re in series with Le (which is lossy) in series with a parallel RLC resonance circuit. In this parallel circuit

R= (Bl)^2 / Rms

L= (Bl)^2 * Cms

C= Mms / (Bl)^2

Where Cms is the compliance of the driver, Mms is the total moving mass of the driver, and Rms is the total mechanical resistive losses of the driver. In case of a closed box, it can be seen as if the box modifies Rms and Cms, so the effect of a closed box can be included by changing these values. Other kinds of boxed will need another type of circuit diagram than this.

HTH
__________________
Simulate loudspeakers: Basta!
Simulate the baffle step: The Edge
  Reply With Quote
Old 27th May 2004, 02:39 AM   #3
catapult is offline catapult
diyAudio Member
 
Join Date: Dec 2002
Location: Planet Earth
Siegfried Linkwitz has a sketch of the electro-mechanical model of a sealed woofer on his web page.

Subwoofer design

Click the image to open in full size.
  Reply With Quote

Reply


Tool for producing an LCR network that = a speaker+box?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Speaker tool Jimmy DIY Multi-Way 4 18th December 2006 03:12 AM
4780 producing only hum: help needed! zenocosini Chip Amps 6 17th November 2005 04:27 PM
speaker cable from PC network wire Hugo Rodriguez Multi-Way 4 6th September 2005 08:07 PM
c3g producing sparks garbage Tubes / Valves 2 11th April 2005 03:03 AM
Demagnetising Tool/Tool Demagnetiser mrfeedback Everything Else 30 4th October 2002 11:53 PM


New To Site? Need Help?

All times are GMT. The time now is 03:29 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