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Multi-Way Conventional loudspeakers with crossovers

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Old 11th February 2009, 04:41 AM   #1
sumit is offline sumit  India
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Default woofers in India cont.......

Hi guys ...A 3 way speaker system was what i planned a few years back and now its time ...well almost to complition . A few years time was required as i had to arrange for the money,time,effort etc etc......

The mid/tweeter section took me more than a year to finish ( as i had to design the mid woofer + crossover ). Its almost the same case with the bass section (no x-over).

Though a few decent 12" woofers are availble locally, I thought why not make a more decent one. So it started and here r the results. And as always it a pleasure to share it on this site. A few construction images of the woofers and the cabinets.

Woofer data :-
Fs - 29Hz
Qes - .387
Qms - 12.2
X max - 7mm lin
Vas - 4.02
Re - 4ohms
Spl - 90.3dB
Le - 1.1mH ( 4layer/52mm/Kapton VC )
Bl ~ 16 +
piston dia = 10.5"


http://i130.photobucket.com/albums/p.../motorpole.jpg
http://i130.photobucket.com/albums/p...77/poletop.jpg
http://i130.photobucket.com/albums/p...orclose-up.jpg
http://i130.photobucket.com/albums/p...a77/magnet.jpg
http://i130.photobucket.com/albums/p...77/venting.jpg
http://i130.photobucket.com/albums/p...utta77/box.jpg
http://i130.photobucket.com/albums/p...7/boxfront.jpg
http://i130.photobucket.com/albums/p...oxsideview.jpg
http://i130.photobucket.com/albums/p...77/boxside.jpg
http://i130.photobucket.com/albums/p...xfrontview.jpg

more pictures would follow as i achive completion. No x-over though as its for a bi-amp system crossed at 220Hz using 4th order LR filter.


enjoi....
sumit
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Old 11th February 2009, 06:30 PM   #2
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Wow, you constructed your own woofer driver? Did you use parts from other woofers like the frame and cone?
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Old 12th February 2009, 02:39 AM   #3
sumit is offline sumit  India
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Default woofers in India conti...

"Wow, you constructed your own woofer driver?" >> have been designing dirvers for the last 8 years

"Did you use parts from other woofers like the frame and cone ":- No , I buy the cones and get the cast frames made on order.


cheers..
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Old 12th February 2009, 05:21 AM   #4
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CONGRATS !!! for being extreme Diy..and ur thoughts abt sharing the design with other diyers !! highly appreciated
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Old 12th February 2009, 05:25 PM   #5
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sumit babu ,
Darun baniachen great work.
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Old 13th February 2009, 03:39 AM   #6
sumit is offline sumit  India
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Thanks guys...... more pictures soon...
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Old 16th February 2009, 06:21 AM   #8
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is that U in one of the pics with half of face covered..just curious to know abt the GREAT Diy'er
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Old 16th February 2009, 06:29 AM   #9
sumit is offline sumit  India
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yup...thats me....but I am no great one...
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Old 24th February 2009, 10:28 AM   #10
sumit is offline sumit  India
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Default a few more snaps

http://i130.photobucket.com/albums/p...7/sideview.jpg
http://i130.photobucket.com/albums/p...iewanother.jpg
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