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Old 8th December 2003, 02:24 PM   #1
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Default subwoofer transmission line

I have a new construction site which will have a poured concrete stage with a front to back distance of approximately twenty feet. I am considering installing a pvc transmission line sub woofer configuration in this floor. Does anyone have suggestions/objections/general help?
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Old 8th December 2003, 03:07 PM   #2
sreten is offline sreten  United Kingdom
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I think a horn loaded design would be far more suitable for a stage, especially an outdoor one.

/ sreten.
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Old 8th December 2003, 08:36 PM   #3
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I'm not trying to be funny here, honest. I'm wondering if something similar to this would be a possibility.
Or this ?
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Old 9th December 2003, 05:33 PM   #4
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Steve Deckert built one in his basement too.
Steve's Tour

Go forward from this point through the slide show.
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Old 9th December 2003, 11:17 PM   #5
sreten is offline sreten  United Kingdom
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With the benefit of further thought a T/L design is entirely unsuitable.

Horn loading is the way to go and nearly all domestic designs will be unsuitable.

If its a commercial build you should use an acoustic consultant.

If its not then read up all the information from PA unit manafacturers.

Personally think caternary 20 ft long horns with the right mouth area would be
awesome and have exceptional bandwidth, but who designs the rest of the PA ?

/sreten.
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Old 10th December 2003, 12:43 PM   #6
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WE WOULD DESIGN THE REST OF THE SYSTEM. WE ALREADY HAVE AN EASE MODEL OF THE SPACE, AND ARE CONSULTING ON THE ACOUSTICAL TREATMENT NECESSARY TO TAME THE RT FROM AROUND 3.2 SEC AT 250HZ. IT'S NOT OFTEN THAT ONE ENCOUNTERS AN OPPORTUNITY TO CONSTRUCT HORNS OF THIS NATURE, AND, THAT IS WHY WE HOPED TO TAP THE EXPERIENCE OF OTHERS WHOVE HAD OCCASION TO IMPLEMENT THIS TYPE OF DESIGN.

THAK YOU ALL SO MUCH FOR YOUR INPUT.
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Old 10th December 2003, 05:23 PM   #7
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TAKE PICTURES PLEASE!
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