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The_Grimy_One
08-05-2011, 10:54 PM
What is the purpose of these boxes? I am assuming they have to be huge... Was thinking of doing one 12 in one, but only if it gives a more SQ feel over a traditional ported... Thanks for any input.

RAM_Designs
08-05-2011, 11:08 PM
It can be done as more of a SQ sort of thing. The easiest way to get some good experience with them is to do a straight(non-tapered) line and play with putting fill in it to tame any peaks you may not want.

surreal
08-06-2011, 02:22 PM
They dont have to be huge and the length doesnt necessarily depict response extension. A straight line like RAM mentioned, or an expanding line will produce the best output with the largest size. If designed correctly, can also have the best sound.
Tapered lines are considerably smaller, and still have decent sound and output. Sometimes better than ported.

It takes more than some design just running a line the 1/4 length with SD area to get them right.. Not all drivers will work. Some can be tamed, some cant.

Joseph7195
08-06-2011, 02:32 PM
I have always wondered about T-Line too. Since two of the most reputable enclosure designers are here, I am hoping I can get away with picking ya'lls brain and not be asking to much. What in a Subs characteristics or T/S parameters make one driver more acceptable as a T-Line driver over other subs? Just curious :)

T.I.K.
08-06-2011, 02:36 PM
t-line design for an 18" HDC3.... GO

surreal
08-06-2011, 06:58 PM
Ocho - I have a tapered tline for one on my website that JMosley built and it happy with.

Joseph - it really depends. You didnt specify what kindof line (such as straight).. if you google you can find a bit of generic reccomendations but the best way to find out is just to take a look.

kushy_dreams
08-09-2011, 11:55 PM
What in a Subs characteristics or T/S parameters make one driver more acceptable as a T-Line driver over other subs? Just curious :)

I have been slowly doing research on t-lines and would like to do one in the future as well. From what I have read, woofers with a qts and qes both under .40 are good candidates for t lines. Subs with a lower fs will need a bigger box to accommodate the longer wavelength.

surreal
08-10-2011, 12:19 AM
Generically, yes. Though there are a few variations of the tline that can accomodate most woofers. If anyone is curious, shoot me a pm and we can discuss.