Tapped horn for Beyma 12b/100r. Help. - diyAudio
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Old 30th September 2011, 10:39 AM   #1
matsj is offline matsj  Sweden
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Default Tapped horn for Beyma 12b/100r. Help.

I have 2 Beyma 12b/100r laying and i want to make a sub of them. Can someone help me with hornresp to make a tapped horn for them ?

Mats
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Old 30th September 2011, 01:07 PM   #2
epa is offline epa  Netherlands
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is this for ht or music?
btw some ts parameters would be helpful
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Old 30th September 2011, 01:23 PM   #3
matsj is offline matsj  Sweden
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Here are some parameters: http://profesional.beyma.com/pdf/12B100-RE.pdf

I need a sub for both ht and music.

mats
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Old 30th September 2011, 03:46 PM   #4
epa is offline epa  Netherlands
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i simmed a ~250 liter cab with 96 db @1pi@2.83v,f3 20 hz.
dont know how low jou want to go but 20 hz f3 looks a good compromise fot ht and music.
nice speaker btw
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Old 30th September 2011, 06:42 PM   #5
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by matsj View Post
Here are some parameters: http://profesional.beyma.com/pdf/12B100-RE.pdf

I need a sub for both ht and music.

mats
Parameters put into HR==> T-TQWT using 2 drivers:

b
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File Type: jpg 2xBeyma 12B100-R_T-TQWT.JPG (588.7 KB, 228 views)
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Old 30th September 2011, 06:44 PM   #6
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20hz good compromise for HT and music? Isn't that pretty much a HT sub?
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Old 1st October 2011, 02:23 AM   #7
Djim is offline Djim  Netherlands
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Watch it guys, the 12B100/R has a very limiting Xmax that is not practical for <35Hz use...
If you want to go below that use the 15B100/R (both are JBL copies btw).
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Old 1st October 2011, 11:28 AM   #8
matsj is offline matsj  Sweden
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I know that they not are any monster, but for a small ht it's better than a small Jamo sub.

I'm not sure jbl copied beyma, i think beyma produced some of jbl's driver.

THank you epa and bjorno!

Mats
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Last edited by matsj; 1st October 2011 at 11:36 AM.
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Old 1st October 2011, 02:15 PM   #9
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by matsj View Post
..I know that they not are any monster, but for a small ht it's better than a small Jamo sub..
Hi Mats,

Agree, Here is another well thought trough design using the Beyma 12B100RE driver that is IME easy to fold:

Like the T-TQWT this OD-QWP is IMO loud enough for use in a normal domestic room.

When placed near a corner the in-band SPL would exceed 120 dB with a margin.

b
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