A good subwoofer
Posted by Sandip Bhattacharya [IP: 171.213.217.183] on July 04, 1999 at 17:45:25
Using Mozilla/4.5 [en] (Win95; U):
In Reply to: A good subwoofer posted by Rodent on July 04, 1999 at 13:44:39:
From an article published in the Audio about 16 years ago by JBL engineers.
The height is 29.5 width 23.75 and the depth 45.25(the baffle is 1.5 icnhes thick).
It is front firing. The port fires backwards. The box is built of .75 inch MDF, with 2 by 4 space frame all around.
It is glued and screwed by more than twenty ten oounce tube of liquid nails and over 450 different sizes of drywall screws.
30 inch tube with 9 inch dia. will tune it to 25 hz. I use a 33 inch long 9.5 dia tube tuning it to 20 hz, and boost it at 20 hz by 6 db with Q=2 to bring my -3 db to 20 hz, like a sixth order alignment, using a professional parametric eq.
Follow Ups:
Return to the new SMR Forums Menu
Design
& HTML © SMR Home Theatre, Images © SMR Home Theatre cannot be reproduced without
permission. The images on this page are digitally watermarked. New forum
messages should be posted into SMR Forums v2 - http://www.smr-forums.com/
|
