How to Cram the Wrong Driver into a Tapped Horn - Page 2 - diyAudio
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Old 24th November 2012, 11:55 PM   #11
diyAudio Member
Join Date: Apr 2008
patrick im a noobie here but couldnt you use polyfill to change the qts or a linkwitz transform Sub-Woofer Controller and Linkwitz Transform Subwoofer Equaliser to change the qts of your subs
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Old 25th November 2012, 10:34 AM   #12
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Join Date: May 2009
Location: New Zealand
For designing speakers that require filtering, non-classic alignments and accounting for cabin gain, I recommend Brian Steele's PORTED.XLS spreadsheet. (
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Old 17th March 2013, 06:01 PM   #13
kees52 is offline kees52  Netherlands
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Join Date: May 2009
Location: Sprang-capelle Holland.
Hi Patric

I have a infinity woofer who I did want to use for a tapped horn, because I did read your stuff in my learning proces of folding and designing a tapped horn I begin to think of a tapped horn in home envirionment is a need, I have A PPSL box designed but only in sketchup, and busy with that tapped horn with the infinity 1260W

Something is wrong, when I try to make a vented box as a opening to tapped horn like you advised here I get not a very good respons from this woofer and in a closed box it get high fs.

I put here some stuff can you let go your experience around so I learn more, I am a amp designer that is for me not so difficult but box yes I have to learn some things.

Further I think the TS are some strange, but when I do a chech with martins TS check sheet it looks everthing is fine, maybe you can check also, see al in the pictures.

I do ask also to prevent use a wrong speaker, it has such low qts for such high mass??, I do when I am ready with the box use limp to measure manufactorys are not always trusted, infinity is a good label though see pdf for TS parameters...


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File Type: jpg ScreenHunter_03 Mar. 17 17.46.jpg (50.6 KB, 272 views)
File Type: jpg ScreenHunter_01 Mar. 17 17.40.jpg (64.5 KB, 272 views)
Attached Files
File Type: pdf REF1260W_PI_EN.pdf (130.9 KB, 12 views)

Last edited by kees52; 17th March 2013 at 06:20 PM.
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Old 18th March 2013, 09:32 PM   #14
xaero is offline xaero  Latvia
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Join Date: May 2010
Location: Latvia
Hi. This is my tapped horn for car, outer dimensions are 455x420x775 mm

Click the image to open in full size.

Click the image to open in full size.

Drivers are 12'' lanzar opti 1232d @ 1ohm load each

Click the image to open in full size.

2 drivers parallel 1v input 2,0 x pi. I will use two hifonics brz 1200.1 amplifiers in 1 ohm load each, did not measure real spl, but i really like how it sound.
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Old 19th March 2013, 05:28 PM   #15
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Join Date: Jan 2011
Isn't that more of a TL than a tapped horn?
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Old 19th March 2013, 07:05 PM   #16
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Location: Columbus, Ohio
Looks like a tapped quarter wave pipe or tube (TQWP or TQWT) flare tapped horn.
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