Suggestions Creating Subwoofer Box(s) - 56 cuft available - Page 2 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 17th January 2012, 05:17 PM   #11
diyAudio Member
 
Join Date: Oct 2011
Quote:
Originally Posted by tb46 View Post
Hi again,

I took a real rough run at it, and four T-TQWT boxes, each with two TC Sounds Epic 12", would fit into that space just nicely. They would be single fold, quite easy to build. 76" x 16" front face for the four.

Regards,

Thank you very much. The different characteristics of T-TQWT vs Tapped Horns?

I was wanting to use 18's for the deep bass characteristics. Also the T-line, as it is described, is much like the response of a sealed box but with the extra output of a ported enclosure.

I am not opposed to tapped horns, Im just not sure how to design them. (I am currently learning)
  Reply With Quote
Old 17th January 2012, 08:27 PM   #12
diyAudio Member
 
Join Date: Jan 2008
Quote:
Originally Posted by 2MuchRiceMakesMeSick View Post
Ok I will look into tapped horns.

Is there any way, if I increase the height to 18, that I can fit two TC Sounds LMS Ultra 5400 18" in that space in a TH configuration? The reviews I have read on this subwoofer are VERY impressive.
The LMS Ultra 5400 18" is 11.54" deep, allowing for 3 x 3/4" plywood, would allow for a 2" throat depth with only a 16" height and a .21" air gap above the magnet.

It is very "doable" with 16" height, with the speaker laying flat (cone pointing up or down), which may result in downward cone sag. If that presents a problem, the cabinet could be flipped from time to time.

That said, there are plenty of good sounding drivers that cost far less per displacement than the TC Sounds drivers, though there are few that have as much per driver.

Designing for extension below 30-35 Hz will cost dearly in SPL output, and is not needed unless cinema effects are a primary concern, so using drivers with a very low Fs (such as the LMS Ultra 5400 18") is not so useful for dance/PA use.
  Reply With Quote
Old 17th January 2012, 09:08 PM   #13
diyAudio Member
 
Join Date: Oct 2011
It is for cinema and music listening purposes. The reason for the large drivers is, at least in my mind, I can tune them deep and still get decent SPL out of them when i turn them up. Right now I have 4-6.5 tang bands in a TH configuration but it is just not near enough (SPL or frequency depth) for my taste.
  Reply With Quote
Old 17th January 2012, 09:15 PM   #14
diyAudio Member
 
revboden's Avatar
 
Join Date: Feb 2011
How big is the room? H/ W/ L

You don't have to worry about SQ the cats around here live it. Unless the room is very large (think concert hall) 4 x Epic 12" drivers In a T-TQWT will be a monster.

Last edited by revboden; 17th January 2012 at 09:24 PM.
  Reply With Quote
Old 17th January 2012, 09:29 PM   #15
diyAudio Member
 
Join Date: Oct 2011
width 16'
length 15'
height (cathedral est 14+ foot)


but I do like ALOT of bass
  Reply With Quote
Old 17th January 2012, 09:56 PM   #16
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Hi Y'all,

I wasn't talking about 4 x 12", I was talking about 4 enclosures with 2 drivers each, or roughly eight TC Sound Epic 12" :-) in T-TQWT boxes. If you can't do structural damage with that, you're just not trying. I'll post a model later.

Regards,
Attached Images
File Type: jpg 18_v_12_comparison_2.jpg (18.1 KB, 245 views)
__________________
Oliver

Last edited by tb46; 17th January 2012 at 09:58 PM.
  Reply With Quote
Old 18th January 2012, 01:00 AM   #17
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Hi 2MuchRiceMakesMeSick,

Take a look at Josh Ricci's Gjallerhorn if you are conviced that you need the LMS Ultra 5400, it's very well documented. Naturally, you'd have to adapt it to your form factor.
And the promised model of the dual 12" T-TQWT:

Regards
Attached Images
File Type: jpg 80x16x19_No_1_Input.jpg (36.8 KB, 241 views)
File Type: jpg 80x16x19_No_1_SPL.jpg (29.7 KB, 197 views)
__________________
Oliver

Last edited by tb46; 18th January 2012 at 01:06 AM.
  Reply With Quote
Old 18th January 2012, 02:24 AM   #18
diyAudio Member
 
BP1Fanatic's Avatar
 
Join Date: Jan 2009
Location: Columbus, Ohio
Quote:
Originally Posted by 2MuchRiceMakesMeSick View Post
The different characteristics of T-TQWT vs Tapped Horns?
TH = positive flare, narrower frequency response, more efficient, & bigger box for a specified F3.

T-TQWT = negative flare, wider frequency response, less efficient, & smaller box for a specified F3.
  Reply With Quote
Old 18th January 2012, 05:15 AM   #19
diyAudio Member
 
Join Date: Oct 2011
Quote:
Originally Posted by tb46 View Post
Hi 2MuchRiceMakesMeSick,

Take a look at Josh Ricci's Gjallerhorn if you are conviced that you need the LMS Ultra 5400, it's very well documented. Naturally, you'd have to adapt it to your form factor.
And the promised model of the dual 12" T-TQWT:

Regards
Thanks for the model. I really appreciate it! I am really looking into the 8-12's. Is there any way I can drop the height to 14" without affecting that design much?
  Reply With Quote
Old 18th January 2012, 01:51 PM   #20
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Hi 2MuchRiceMakesMeSick,

Post #19: "... Is there any way I can drop the height to 14"..."

Yes, that sound quite feasible. I haven't done a drawing on this one yet, but of the top of my head that would be a good height. You would be looking at a combined front face of 76"W x 14"H; the overall depth would be 80"D; the individual boxes would be 76/4 = 19"W.

I can see if I find the time to draw something up around those dimensions, if you are interested.

Regards,
__________________
Oliver
  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
Can I do a Jordan Jx92S in a .75 cuft cabinet? stephenmarklay Full Range 9 21st December 2009 08:14 PM
Subwoofer box for a Xenon x10d2. Need Suggestions. Ornlu Subwoofers 3 23rd May 2005 07:32 AM
Please help creating subwoofer enclosure Lach O'Sullivan Subwoofers 13 8th September 2003 06:20 AM


New To Site? Need Help?

All times are GMT. The time now is 01:45 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