Transmission Line theories and dimensions, any help?

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Date: March 25, 2003 at 15:53:01
From: Malcolm, [130-127-85-234.johnstonea.resnet.clemson.edu]
Subject: Transmission Line theories and dimensions, any help?

I have been looking over this site and others about transmission line theories. I assumed that a transmisison line is just used to take the inside waves of the box and convert them to a wave that will help amplify the wave coming out of the front. Now I'm guessing it's not used like a port is on a box because all the ones I have seen are stuffed with polyfill or various things. What I am really looking for is some way to calculate how to make one for a cv Vega 12 sub. I was thinking of using it in a car as long as it is of reasonable size. I have seen some car application boxes that Rockford came out with. It really doesn't look like all the other TL I've seen. It looks more like a shelf vent but the vent is like 25" long with a 90 degree angle in it. If anyone has seen one they might be able to clarify what it is exactly. I would just buy one of those but I don't really want to pay 180 some odd dollars. Anyways, I would like to build one of those and if anyone has anyways of giving me some deminsions I would appreciate it. I guess I will post these too;
Vega 12-4 Vega 12D-4
fs 23 21
qts 0.33 0.27
vas 2.85 4.87

Now the only differance between the two is that one is dvc, and if anyone wants to know I have no idea what I want to change my major to...

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Follow Ups:

Re: Transmission Line theories and dimensions, any help? Vega-Man 26-Mar-2003 11:54:56 (1)

Re: Transmission Line theories and dimensions, any help? Martin 27-Mar-2003 08:44:13 (0)

make a ported box instead mikeported 25-Mar-2003 19:54:02 (22)

Dont make a ported box instead ;-) demanddeepbass 27-Mar-2003 08:48:54 (21)

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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