ported vs. transmission lines

[oldenglishD 0]

Clarify a little what you called bs in your previous post...

for one you have to use sd to either dampen or undampen a line. if the line is way to dampened in tradional sence it is considered way to learn with tight bass. port act completly different then a line and can be tuned in a way that is simulair to that of a ported in other words tweeked till you get spl or hard pucnchy bass kinda like a ported you go so big on the box and tune it to 28 to 33 hertz the note flatens out and becomnes boomy. ior smaller with a higher tune you get spl.

now with a line you can make it peak changeing the sd larger or flaten it out by smaller number for sd this is all part of tuning a line.

if he knows any thing he would no this and all he give is bs. btw i thought there was a rule about people postiong if they did not know what there talking then stfu.

[porkchop 304]

edit : not sure what was in my head, way too much filth fell out of my mouth here.

sorry.

[porkchop 304]

i lied about the tickets, sorry.

[95Honda 486]

oldenglish- Context is your friend. If you re-read my posts you will note that the word "tuning" is used in reference to a resonation point, not the adjustment of the overall alignment. Once you make this connection, everything else will fall in place.

It also help if you communicate with a little more clarity and brevity than a 12 year old.

[Adrian_D 520]

Clarify a little what you called bs in your previous post...

for one you have to use sd to either dampen or undampen a line. if the line is way to dampened in tradional sence it is considered way to learn with tight bass. port act completly different then a line and can be tuned in a way that is simulair to that of a ported in other words tweeked till you get spl or hard pucnchy bass kinda like a ported you go so big on the box and tune it to 28 to 33 hertz the note flatens out and becomnes boomy. ior smaller with a higher tune you get spl.

now with a line you can make it peak changeing the sd larger or flaten it out by smaller number for sd this is all part of tuning a line.

if he knows any thing he would no this and all he give is bs. btw i thought there was a rule about people postiong if they did not know what there talking then stfu.

Apart from the explanation that hardly made sense, you should quit the attitude. I'm willing to bet that 95Honda has quite a bit more experience building transmission lines.

It's very frustrating to see all the hype surrounding this design.

[oldenglishD 0]

t-line is, by all means a a line. 1/4 wave.... if not, real pucking long!!!

take a speaker, mount it to a pipe of matching sd, the length and amount of stuffing will determine the frequency tunning......

bend it into a few turnes, still a line, ...... from there, try mdf..... it is a different set of numbers, from a round, radius port to a slotted( rectangular port area )..... the speed of sound diveded by 1/4 still applies

still need to stuff it for the proper tunning frequency...... you are still on a t-line build.....

taper it, it will help output and change tunning.... change the loading area of it , helps compromise the build and changes the output.....but it is not a t-line no more, it has been changed....by definition.

with all that said, i truly don't know shit and was just trying to raise my post count.

at 2000 post they give you tickets to vegas!!!

stuffing is dampening so you answered my point. the one i outlined in the quote in red. so you would not dampen a box?? or change it's sd that is what you just did sir.

[kirill007 52]

If you didn't build something that wasn't a T-line, but called it one anyway, then no, I wasn't refering to you.

Also, this thread has nothing to do with stiffling creativity, it is meant to cut the BS and give people correct information, that is why we are here anyway, right?

If you are talking about me.(which you probably are, look at these pictures)

(don't know if i can post links to this forum, but here ,is my link to my Tline Build :Tline Build

I know what a Tline is and how it sounds, and most of the physics behind it.

And most important, i know how to build it.( but i do not khow how to make it look good)

EDIT: like i thought, the link doesn't works, just put Steve mea dedes igns in the URL.(without the spaces.)

Edited February 10, 2010 by kirill007

[j-roadtatts 1,129]

[kirill007 52]

I'm tuned in. Hopefully some of the knowledgeable ones will teach us a thing or 2. Why does the power handling go down? If it's the math show us the formula's for a true t-line.

The mechanical power handling goes down, because there is no airspace behind it to act like a air spring.

So excursion is higher with lower power.

I know, it is obvious from his (kirill007) 2nd post that he didn't understand that a 4th order vented box is not a bandpass (I never even mentioned bandpass) and that he completely missunderstands how a T-line works (look into the use of the word "tuning").

Pretty much everyone who believes this, and believes they have built a T-line (when in fact they have build a ported box with a huge port) will go on and on about it.....

The whole point of a T-line is NON-resonant behavior and flat response with an enhanced low end. A proper T-line will never be more efficient (except the last octave, in which case they accell, but this doesn't help car audio SPL in the least) than a proper 4th order vented alignment...

It is also appratent when someone post a picture of a "T-line" only to find that in fact, they have not built one at all.

But like I said before, it doesn't matter what I say, lol...

4th order vented box, is a bit confusing, much easier to just use ported or vented box.(Because i'm from Belguim, and english is not my native language.)

To the last line: look at my previous post.

(i know there are quite a lot of people that think they have built a Tline, but it's just a ported box with a long port and same port area as the subs crossectional surface area.)

Lol at J-roadtatts.