Dont make a ported box instead ;-)

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Date: March 27, 2003 at 08:48:54
From: demanddeepbass, [dial81-135-70-131.in-addr.btopenworld.com]
Subject: Dont make a ported box instead ;-)

Don't be so hard on the poor misunderstood TL! :-) They (genrally) have shallower roll-off, better group delay and lower distortion than ported boxes it's the way forward for very deep bass!
The driver you have will be fine in a TL. In addition to the excellent link Mike mentioned www.t-linspeakers.org has some useful design info and tips on building.
If you want proof of the deep bass have a look at the response diagrams on my site www.btinternet.com/~spurlash (click on "bass pages") Flat to within 1/4dB from 80Hz to 21Hz. F3 at 15Hz in an anechoic environment. All with efficiency of over 97dB/W @ 1m

Your only problem with a TL in a car will be that it will want a lot of space. You shouldn't need to tune as low as you would a ported box because the roll-off is much shallower and cabin gain will boost the bottom end anyway. With quite heavy stuffing in the line you should be able to keep it to a reasonable size.

Olly

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Follow Ups:

Re: Dont make a ported box instead ;-) Derek 02-Apr-2003 00:42:01 (0)

help me understand your x-mission line sub.... norman bates 27-Mar-2003 22:27:03 (7)

Re: help me understand your x-mission line sub.... demanddeepbass 30-Mar-2003 12:05:37 (6)

Re: help me understand your x-mission line sub.... Martin 30-Mar-2003 20:47:41 (4)

Re: help me understand your x-mission line sub.... demanddeepbass 03-Apr-2003 08:51:52 (0)

Re: tline mikeported 30-Mar-2003 23:55:58 (2)

Re: tline Martin 31-Mar-2003 08:10:55 (1)

FREE mathcad! il go get it*NT* mikeported 31-Mar-2003 22:58:18 (0)

Re: help me understand your x-mission line sub.... mikeported 30-Mar-2003 17:29:08 (0)

Re: Dont make a ported box instead ;-) mikeported 27-Mar-2003 20:53:31 (0)

Re: Dont make a ported box instead ;-) mikeported 27-Mar-2003 20:51:43 (10)

Re: a few comments.... Adrian Mack 28-Mar-2003 09:55:13 (9)

Re: a few comments.... Martin 28-Mar-2003 14:41:00 (8)

I did a little research on tls......... norman bates 28-Mar-2003 20:08:43 (7)

Re: I did a little research on tls......... Martin 28-Mar-2003 22:01:29 (4)

Re: I did a little research on tls......... Brian 29-Mar-2003 19:48:27 (0)

Can this work as a transmission line ???? norman bates 28-Mar-2003 22:13:48 (2)

Re: Can this work as a transmission line ???? Martin 28-Mar-2003 22:22:37 (1)

sounds good to me !!!! norman bates 28-Mar-2003 22:34:17 (0)

very interesting mikeported 28-Mar-2003 20:54:09 (1)

Re: very interesting Martin 28-Mar-2003 22:08:17 (0)

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