woofers in India cont.......

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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/p266/sumitdutta77/motorpole.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/poletop.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/motorclose-up.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/magnet.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/venting.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/box.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/boxfront.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/boxsideview.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/boxside.jpg
http://i130.photobucket.com/albums/p266/sumitdutta77/boxfrontview.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
 
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..
 
ABSOLUTELY AWESOME WORK !!

21oo9qc.jpg


and i KNOW there is zero flex in that cabinet.
 
60ndown, which drivers are these? Do you have any details on this speaker - cabinet design, crossover design, etc..

For the mid its the old old post

http://www.diyaudio.com/forums/subwoofers/95926-searched-enough-drivers-india-9.html

X over >> Bi-amping...... As for the woofer its crossed at 220Hz with a 4th order active LR filter using opa-627..... For the mid and tweeter ( passive 2nd order LR x-ed at 1.7khz ). The woofer and mid bass cabinets are both sealed types. The tweeter is vifa xt25...modified obviously....;-)... added a long ( 10" ) rear damped chamber which reduces the resonance form 565Hz to about 480Hz.....
 
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