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Old 5th December 2011, 11:03 PM   #41
bjorno is offline bjorno  Sweden
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FWIW,

If you can tolerate max ~115dB at 2Pi or ~125dB/1m,f-3dB=~28 Hz to~100Hz and no HPF, you could build a 217L(~7.67 cu.ft) T-TQWT intended primarily for music use.

My case targeted a music mixing studio.

Early build pictures and simulations I followed:

b

PS: I have 4 320L 3m TH:s in the pipe, also using th 3015 LF driver.(No pictures yet).
Attached Images
File Type: jpg E.K-lite-3015LF_T-TQWT_as-is.JPG (604.7 KB, 824 views)
File Type: jpg LF3015-T-TQWT.JPG (179.9 KB, 818 views)

Last edited by bjorno; 5th December 2011 at 11:12 PM. Reason: Saving space.
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Old 12th December 2011, 05:34 PM   #42
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Cluster of four @ x-max, not bad i think.
It is worth to notice the size of this cab, it is actually small, about 30% smaller than TH-18 (Xoc1's design) and TH 115/TH 118 by Danley.
Click the image to open in full size.

Dag
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Old 12th December 2011, 08:03 PM   #43
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Aaaaand some drawings:

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

Dag
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Old 12th December 2011, 09:01 PM   #44
Xoc1 is offline Xoc1  United Kingdom
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Hi Dag
Thanks for the drawings
Unfortunately the dimensions given are not complete enough to build your design.
I have added your dimensions to a sketch, and the panels that are not completely defined in space are in blue.
The other sketch shows some dimensions to add, if you want others to build your design as you intended.
Kind Regards
Martin (Xoc1)
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File Type: jpg Dag 15TH Sk.jpg (155.4 KB, 290 views)
File Type: jpg Dag 15TH Sk 2.jpg (33.2 KB, 262 views)
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Old 13th December 2011, 04:30 AM   #45
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Quote:
Originally Posted by Xoc1 View Post
Hi Dag
Thanks for the drawings
Unfortunately the dimensions given are not complete enough to build your design.
I have added your dimensions to a sketch, and the panels that are not completely defined in space are in blue.
The other sketch shows some dimensions to add, if you want others to build your design as you intended.
Kind Regards
Martin (Xoc1)
Martin, you are absolutely right!
I will fill in the numbers later today, thanks for the sketch.

Dag
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Old 13th December 2011, 11:48 AM   #46
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Wow, these look just like what I need or maybe a 12" driver version. One question though, how heavy are they?
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Old 13th December 2011, 12:30 PM   #47
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Does anyone know of a similar but smaller lab12 version of this as I would still rather have more smaller speakers than just a few larger speakers.
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Old 13th December 2011, 03:27 PM   #48
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Quote:
Originally Posted by reminence View Post
Does anyone know of a similar but smaller lab12 version of this as I would still rather have more smaller speakers than just a few larger speakers.
Don't forget the "Iron Law". Small, low cutoff frequency, efficiency - pick two .
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Old 13th December 2011, 03:40 PM   #49
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Yeah I am just learning the rule and it seams that these are as good as it is ever going to get for its size. I am very impressed, 35hz is very good and it seams to me that a single ss15 is more like 45hz(single) but with more spl. I think this design is a winner for me at least and at a guess the weight would be similar.
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Old 13th December 2011, 03:44 PM   #50
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150 ish?
Casters are going to be your friend on these
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