Considerations for building a TWW 2-Way System - 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 1st December 2006, 03:44 PM   #1
diyAudio Member
 
Join Date: Dec 2006
Default Considerations for building a TWW 2-Way System

Hi there,

I've been looking all over for information/documentation on building a 2-Way speaker with 2 woofers. (TWW Configuration)

How will the xover network be affected (other than the load of course), what will become of the Re and all other drive parameters when hooked in series/parrallel... What about the dB/W...

I've found a lot of designs incorporating 2 woofers in either a D'appolito config or TWW but haven't found any pertinent documentation on the subject.

Anyone know of a site/resource where i might find such information ?

Thanks a lot
  Reply With Quote
Old 1st December 2006, 04:02 PM   #2
sreten is online now sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

try looking for information on 2.5 way speakers.

/sreten.
  Reply With Quote
Old 5th December 2006, 12:53 AM   #3
diyAudio Member
 
Join Date: Apr 2005
Location: NH
Send a message via AIM to 69stingray Send a message via MSN to 69stingray Send a message via Yahoo to 69stingray
Here is one:

http://www.partsexpress.com/projects...e/ubt/ubt.html

Here is another:

http://www.zaphaudio.com/Waveguidetmm.html
__________________
Audio DIY Page
FOLLOWMY529.COM - Subscribe and follow the performance of my daughter's 529 College Saving Account.
  Reply With Quote
Old 5th December 2006, 01:37 PM   #4
diyAudio Member
 
Join Date: Oct 2006
You could use a design similar to mine (2 1/2 way) and use only one enclosure instead of two. (one sealed for mid, and one ported for woofer) It'd be cheaper as well since you wouldn' t need the crossover on the bottom woofer.

http://www.htguide.com/forum/showthread.php4?t=23211
  Reply With Quote
Old 5th December 2006, 02:40 PM   #5
sreten is online now sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Quote:
Originally posted by s7horton
You could use a design similar to mine (2 1/2 way) and use only one enclosure instead of two. (one sealed for mid, and one ported for woofer) It'd be cheaper as well since you wouldn' t need the crossover on the bottom woofer.

Hi, what your saying doesn't make any sense, /sreten.
  Reply With Quote
Old 7th December 2006, 01:09 PM   #6
diyAudio Member
 
Join Date: Oct 2006
If you viewed the thread, you would notice there is an upper enclosure for the midbass and tweeter and a separate chamber, ported, for the woofer. WIth a two-way, I would put everything in the same chamber, ported.

My crossover is made of three components. One for the tweeter, one for the mid and one for the .5 woofer. If you made a two way, you wouldn't need the .5 portion of the crossover.

Make sense?
  Reply With Quote
Old 7th December 2006, 02:27 PM   #7
sreten is online now sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Quote:
Originally posted by s7horton
If you viewed the thread, you would notice there is an upper enclosure for the midbass and tweeter and a separate chamber, ported, for the woofer. WIth a two-way, I would put everything in the same chamber, ported.

My crossover is made of three components. One for the tweeter, one for the mid and one for the .5 woofer. If you made a two way, you wouldn't need the .5 portion of the crossover.

Make sense?
Hi,

More sense. You don't need separate chambers for a 2.5 way. Its
a design choice. You can also have separate chambers for a 2-way.

/sreten.
  Reply With Quote
Old 7th December 2006, 05:51 PM   #8
Raoul is offline Raoul  United States
diyAudio Member
 
Join Date: Feb 2003
Location: OR
Hi s7horton,

Zaph actually did some tests that imply seperate enclosures for a 2.5 way may not be necessary:

http://zaphaudio.com/commonenclosuretest.html

Not saying that building two enclosures is a bad thing, but The results are pretty interesting.
  Reply With Quote
Old 8th December 2006, 01:17 PM   #9
diyAudio Member
 
Join Date: Oct 2006
I don't disagree. It's not required. But I like the sound I get with a larger, ported chamber for the bottom end. It's tuned for that driver.
  Reply With Quote
Old 8th December 2006, 05:04 PM   #10
diyAudio Member
 
Join Date: Aug 2006
Send a message via ICQ to TurboFC3S Send a message via AIM to TurboFC3S
My recent build is a 2.5 way with GR M-165x drivers ... one cab I did both woofers in a 1.65 cu/ft vented - the other was one driver in a .6 sealed, the other in a 1 cu/ft vented.

The 1.6 cu/ft vented version produced significantly more bass. I did quick measurements with my ECM8000 and Speaker Workshop ... but bass measurements are somewhat inconclusive. I trusted my ears more than the measurement, and they told me the version with both drivers in a shared larger enclosure was the way to go.

That's just one example though, based on my space and cabinet size limitations.
  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
building EMG BQS system <>? woodbuilder Instruments and Amps 0 16th May 2008 03:58 PM
Considerations in enclosure-building for full range drivers Taterworks Full Range 2 23rd April 2008 07:00 PM
Building a system systemerror909 Multi-Way 6 29th April 2005 10:12 AM
Need help in building a system deathmetal Car Audio 3 9th October 2003 02:56 AM


New To Site? Need Help?

All times are GMT. The time now is 12:36 AM.


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