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  1. #16
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    Re: t line enclosure

    Now measure from the middle of the surround on one side of your sub to the middle of the surround on the opposite side. That will give you your cone diameter. It will probably be around 6.5". Divide that in half to get the radius of the cone =3.25". Now use π r2 = which gives you roughly 33 square inches for 1 8" sub. You are wanting to do 4 8" subs.... So you will need a line volume of 132 square inches.







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    Re: t line enclosure

    No you cant sacrifice the length




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    Re: t line enclosure

    I built a t-line for my wifes Jimmy with 2 DD2508 and its crazy loud for 2 8s. 4 8s should be amazing




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    Re: t line enclosure

    Quote Originally Posted by Dub7sonoma View Post
    No you cant sacrifice the length
    guess ill never be seeing a tline then lol i dont know of a vehicle that is wide enough to consider it properly




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    Re: t line enclosure

    So I'd need an 8.09' box with port dimensions of 12"x11" or something similar... interesting.



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  6. #21
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    Re: t line enclosure

    I made a design for the p1 I'll start it this weekend and see how she turns out, I have no way of metering but I'm hoping to be impressed by a 150 rms 10




  7. #22
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    Re: t line enclosure

    Quote Originally Posted by bbeljefe View Post
    Another advantage of wave transmission lines is that they're super easy to calculate. Of course, that's offset by the difficulty in designing the box to fit in your vehicle but on balance, I think it's well worth the difficulty.

    They play well throughout the sub bass region and normally extend to about one octave below driver Fs before going -3dB... which is super low compared with the response of a conventional ported enclosure tuned in the low 30s.

    Drivers with a Qts above 7 and a Qes below 4 are best suited for them but any sub will perform its best in a t-line.

    Here are some resources on them:
    Transmission Line Speakers
    Quarter Wavelength Loudspeaker Design

    Here are a few I've built:
    JBL GTO 10 in Wave T-Line
    https://www.youtube.com/watch?v=FN-s4efefZo
    Hey dude, nice to meet you. I'm an experienced installer of 15 years, just getting back into the car audio realm after a few years away and looking to put a pretty hardcore demo system back into my vehicle. It's gonna be in a Chevy Silverado with a camper shell and pulling the rear window. Might want to look into doing a tline in it as i've never done one. Any help/advice you can give me would be awesome. PM me if you want and thanks for any help you can give.




  8. #23
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    Re: t line enclosure

    Quote Originally Posted by UsAmpsFreak View Post
    Hey dude, nice to meet you. I'm an experienced installer of 15 years, just getting back into the car audio realm after a few years away and looking to put a pretty hardcore demo system back into my vehicle. It's gonna be in a Chevy Silverado with a camper shell and pulling the rear window. Might want to look into doing a tline in it as i've never done one. Any help/advice you can give me would be awesome. PM me if you want and thanks for any help you can give.
    Nice to meet you too. I'm in about the same boat except that I took a car audio break for about 20 years. Did commercial and residential sound, home theater, video, telecom, data, security, fire detection et al in the interim but never lost my love for car audio, so I decided to seriously re-enter the hobby about a year ago and now that has turned into me opening a shop. :-)



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  9. #24
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    Re: t line enclosure

    Quote Originally Posted by bbeljefe View Post
    Nice to meet you too. I'm in about the same boat except that I took a car audio break for about 20 years. Did commercial and residential sound, home theater, video, telecom, data, security, fire detection et al in the interim but never lost my love for car audio, so I decided to seriously re-enter the hobby about a year ago and now that has turned into me opening a shop. :-)
    Ha ha, very cool. I thought about opening a shop but never took the plunge. Good luck to you.




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    Re: t line enclosure

    Quote Originally Posted by UsAmpsFreak View Post
    Ha ha, very cool. I thought about opening a shop but never took the plunge. Good luck to you.
    Thanks. I figure this will be the only way I can finish out what working life I have left doing something I love. :-)



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    Re: t line enclosure

    Quote Originally Posted by bbeljefe View Post
    Thanks. I figure this will be the only way I can finish out what working life I have left doing something I love. :-)
    That's cool man, where you located at?




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    Re: t line enclosure

    I'm in my office right now but I'm about to head to bed.

    And those are in Shreveport.



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  13. #28
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    Re: t line enclosure

    Quote Originally Posted by bbeljefe View Post
    I'm in my office right now but I'm about to head to bed.

    And those are in Shreveport.
    Ah, pretty cool, same side of the states as me. I'm in Pensacola, FL




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