B&C 18tbx100 T-tqwt - diyAudio
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Old 1st May 2012, 02:21 PM   #1
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Default B&C 18tbx100 T-tqwt

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I am looking for a T-tqwt design for b&c 18tbx100 for outdoor use. Playing down to 35hz
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Old 1st May 2012, 05:09 PM   #2
bjorno is offline bjorno  Sweden
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Hi soundhead,

FUY, Here is an example of a single folded T-TQWT not tuned to low for outdoor use:

b
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Old 1st May 2012, 05:21 PM   #3
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Quote:
Originally Posted by bjorno View Post
Hi soundhead,

FUY, Here is an example of a single folded T-TQWT not tuned to low for outdoor use:

b
Thanks Bjorno this single folded looks good.
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Old 1st May 2012, 05:26 PM   #4
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by soundhead View Post
Thanks Bjorno this single folded looks good.
Agree, Not that large...~45.5" high (if 18mm wood).

What is your application besides being used outdoors?

b
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Old 1st May 2012, 05:31 PM   #5
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I will be playing R&b,hip hop and pop music.

The next hard part is to find someone to fold it up for me.
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Old 1st May 2012, 05:53 PM   #6
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by soundhead View Post
I will be playing R&b,hip hop and pop music.

The next hard part is to find someone to fold it up for me.
Cut the HR layout in half(=112 cm internal height) and locate the terminus S4 at the bottom of the enclosure facing rotated 90 degrees (S4= a rectangular opening of 46 x 8.78 cm^2).

I calculated with a very narrow internal width of 46 cm and driver should be located at fitting snugly touching the bottom plate . The box external width would be at minimum~46 +2 x 1.8 cm= ~19.53".

b
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Old 1st May 2012, 05:58 PM   #7
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Quote:
Originally Posted by bjorno View Post
Cut the HR layout in half(=112 cm internal height) and locate the terminus S4 at the bottom of the enclosure facing rotated 90 degrees (S4= a rectangular opening of 46 x 8.78 cm^2).

I calculated with a very narrow internal width of 46 cm and driver should be located at fitting snugly touching the bottom plate . The box external width would be at minimum~46 +2 x 1.8 cm= ~19.53".

b
I am not that smart when it comes on to maths be I will try to figure it out.

Thanks
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Old 2nd May 2012, 06:37 PM   #8
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by soundhead View Post
...I am not that smart when it comes on to maths be I will try to figure it out...
Hi Soundhead,

A few more hints:

b

PS: If you are 'off' a quarter of an inch on any dimension: IMO/IME, This wouldn't cause noticeable differences on the performance.
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Old 2nd May 2012, 06:44 PM   #9
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Thanks bjorno
I will post a drawing that I am working on later.
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Old 2nd May 2012, 08:39 PM   #10
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Bjorno
Can four of this cabinet hit 135db outdoor.

Last edited by soundhead; 2nd May 2012 at 08:42 PM.
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