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

Square formation ML-TL
Square formation ML-TL
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 25th June 2017, 06:38 AM   #1
caffeineaddict is offline caffeineaddict  Australia
diyAudio Member
Join Date: Jun 2015
Location: Brisbane, Queensland
Default Square formation ML-TL

Hi all,

I've been thinking (always a dangerous thing) about a stack of drivers I have kicking around and pondered using them to make a TMWWWW, with a sealed Mid, and four drivers for the woofer, and having fallen in love with transmission lines have been trying to figure out if I could get away with using them in that configuration.

MJK's worksheets allow for stacking two driver's vertically, but any more then that and it stops working for the purposes of making it a transmission line. My question is, is there a reason not to use four drivers in a square, therefore not running into the problems that would normally come from stacking four drivers vertically in a MLTL. My (admittedly lacking) understanding is that as long as the centre-to-centre of the drivers fell within a certain upper wavelength limit then they would act as one driver, and wouldn't suffer from any combing effects, so in the case of a TMWWWW, where they would probably be filtered out at a max of around 300hz (wavelength of roughly 45"), there shouldn't be any issues?

I have run the idea past MJK on his yahoo group and he suggested that it is an idea that may work in a TL, but I wondered if anyone here had some input or had tried something similar in the past.

using these parameters for the 4 drivers:
F: 48hz
R: 6.3Ohm
L: 0.732mH
Bl 13.488
Sd: 480cm^2
Vas: 70.83
Qes: 0.537
Qms: 1.637
Qts: 0.404

And Geometry:
Length: 178cm
Driver distance from top: 43.5
Port from top: 160cm
Internal top and bottom area: 38cm*38cm
Stuffed about a third of the way down between driver and port with stuffing density of 0.6lb/ft^3
Radius of port: 9cm
Length of port: 8cm

I get a graph of this for the Frequency response
Attached Images
File Type: bmp 4 Driver MLTL - Square formation.bmp (69.4 KB, 49 views)
  Reply With Quote
Old 29th May 2018, 01:25 PM   #2
leonrocks is offline leonrocks  Australia
diyAudio Member
Join Date: Jul 2006
Location: Qld
Did you try it?
What is your mid driver?
  Reply With Quote


Square formation ML-TLHide 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
What's the difference between a TL, a ML-TL and a TQWT? Bricolo Multi-Way 85 18th September 2014 08:15 AM
JORDAN JXR6 in square vs. linear formation ark Multi-Way 9 14th September 2013 07:36 PM
Can anyone help TL or ML-TL for Alpair 10 _henry_ Full Range 3 31st December 2008 07:31 AM
ML-TL or ML-TQWT with very low Qt driver Henkjan Full Range 6 29th September 2006 03:29 PM
Small box for FE103 - ML TL or ML TQWT? ChuckT Full Range 15 28th July 2004 06:56 AM

New To Site? Need Help?

All times are GMT. The time now is 07:36 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio