Best driver placement for 4 drivers - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

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
Reply
 
Thread Tools Search this Thread
Old 23rd October 2012, 10:29 AM   #1
diyAudio Member
 
Join Date: Feb 2012
Location: Brisvegas
Default Best driver placement for 4 drivers

Trying to work out the best placement for four identical drivers (ScanSpeak 18WU-4741 wired in series and parallel), trying to work out if in a square pattern in preferable over four in a line or vice versa.

Obviously four in a square take up less height and probably easier to wire up, but will the drivers being side by side cause any issues?

Also can anyone tell me how much gain I would get in that wiring configuration.
  Reply With Quote
Old 23rd October 2012, 11:00 AM   #2
diyAudio Member
 
Melo theory's Avatar
 
Join Date: Sep 2009
Location: Gulfport fl.
What exactly are you trying to build?
You will get a 6 db gain with the same nominal impedance as 1 driver.
__________________
I LIKE YOU
  Reply With Quote
Old 23rd October 2012, 11:15 AM   #3
diyAudio Member
 
Join Date: Apr 2012
Location: Sydney
Depends on crossover point. Download Edge to test lobing.
  Reply With Quote
Old 23rd October 2012, 11:16 AM   #4
diyAudio Member
 
Join Date: Feb 2012
Location: Brisvegas
An open baffle mid woofer(s)...

4 x 18WUs in a row is about 750mm tall which doesn't leave much height for anything else.
  Reply With Quote
Old 23rd October 2012, 01:15 PM   #5
tvrgeek is offline tvrgeek  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Md
The beam pattern will vary. In line will bring down the vertical dispersion, aka line source. Multi drivers always cause beaming and lobbing issues. The short answer is to prototype and see which works best for you in your room.
  Reply With Quote
Old 23rd October 2012, 01:24 PM   #6
Einric is offline Einric  United States
diyAudio Member
 
Einric's Avatar
 
Join Date: Feb 2011
Location: Bozeman, MT
What is EDGE and where do you get it?

Thanks
  Reply With Quote
Old 23rd October 2012, 02:05 PM   #7
diyAudio Member
 
Join Date: Feb 2012
Location: Brisvegas
Quote:
Originally Posted by tvrgeek View Post
The beam pattern will vary. In line will bring down the vertical dispersion, aka line source. Multi drivers always cause beaming and lobbing issues. The short answer is to prototype and see which works best for you in your room.
Yeah not too hard really to make a baffle for each combo and try it out.

Einric check it out.... http://www.tolvan.com/edge/help.htm
  Reply With Quote
Old 23rd October 2012, 05:55 PM   #8
boris81 is offline boris81  United States
diyAudio Member
 
Join Date: Oct 2009
Location: white plains, ny
It depends on how high in frequency you will use them.
But since you are doing OB the width of the baffle is the primary deciding factor.
What is your upper crossover point?
  Reply With Quote
Old 23rd October 2012, 09:56 PM   #9
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
All other considerations aside there is something massively imposing and impressive about stacking vertically.

I did think that there was a technical reason for keeping to a maximum of 2 co-incident drivers tho, and this is why WW MTM WW layouts are so common when using quads of woofers
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 23rd October 2012, 10:12 PM   #10
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
You can cheat a little bit by staggering them.
Attached Images
File Type: jpg IMG_1548.jpg (106.9 KB, 71 views)
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote

Reply


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
driver placement speedie Multi-Way 4 9th August 2009 05:22 AM
Driver Placement on baffle 56oval Multi-Way 2 26th July 2009 06:25 PM
Driver placement in horn? Rademakers Multi-Way 4 3rd June 2008 11:58 PM
Dimensions and driver placement Tai-Pan Multi-Way 5 16th December 2002 05:49 PM
Driver placement Vivek Multi-Way 8 12th April 2002 08:58 PM


New To Site? Need Help?

All times are GMT. The time now is 05:37 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2