Closed Thread
Results 1 to 8 of 8

Reload Thread: t-line for sundown e8

  1. #1
    tyler_fitz's Avatar
    tyler_fitz is offline They call me Weezer



    Join Date
    Feb 2007
    Location
    Hutchinson, KS
    Posts
    2,014
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Icon32 t-line for sundown e8

    alright folks, so i read the tutorial about how to make a t-line over on smd, and i even designed a box based of the tutorial, but then i learned that his formula for making a t-line was uber simplified and dumbed down and there is a lot more that goes into a t-line than that...

    so how do i design a t-line the right way? and before i go any further, this is not going into a vehicle, this is for my bedroom, its fairly large, about 240 square feet. its for music, not so much movies and video games (maybe sometimes...)



    1995 Dodge Dakota Ext. Cab
    Sub: 15" Fi Q
    Amp: Kicker ZX1000.1
    Box: 3.0 @ 35hz, aero
    HU: Pioneer 680mp
    Speakers: pioneer 3-ways
    Big 3 in 4ga kicker hyperflex

    Bought from: Cochese, AJČ06, basssquared, gsr22, gymfreak101




  2. #2
    PBateman's Avatar
    PBateman is offline This is bat country....



    Join Date
    Aug 2007
    Location
    colorado
    Posts
    348
    Post Thanks / Like
    Mentioned
    4 Post(s)

    Re: t-line for sundown e8

    Quote Originally Posted by tyler_fitz View Post
    alright folks, so i read the tutorial about how to make a t-line over on smd, and i even designed a box based of the tutorial, but then i learned that his formula for making a t-line was uber simplified and dumbed down and there is a lot more that goes into a t-line than that...

    so how do i design a t-line the right way? and before i go any further, this is not going into a vehicle, this is for my bedroom, its fairly large, about 240 square feet. its for music, not so much movies and video games (maybe sometimes...)
    Where did you learn this? Did someone tell you that?



    VW passat trunk
    Alpine 9855 AC DQXS
    Sundown SAZ-4500/SAX-100.2
    Diamond D-661S comps.
    DD Z18
    148+db on music
    -------------------------
    1989 Honda CRX Si
    2 nsb90's / 2 sundown saz4500's
    4 10's and 155+db

  3. #3
    Miskin's Avatar
    Miskin is offline Member



    Join Date
    Jul 2009
    Location
    7
    Posts
    99
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: t-line for sundown e8

    big bedroom




  4. #4
    tyler_fitz's Avatar
    tyler_fitz is offline They call me Weezer

    Threadstarter


    Join Date
    Feb 2007
    Location
    Hutchinson, KS
    Posts
    2,014
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: t-line for sundown e8

    Quote Originally Posted by PBateman View Post
    Where did you learn this? Did someone tell you that?
    is his method correct? not sure where exactly i read it...



    1995 Dodge Dakota Ext. Cab
    Sub: 15" Fi Q
    Amp: Kicker ZX1000.1
    Box: 3.0 @ 35hz, aero
    HU: Pioneer 680mp
    Speakers: pioneer 3-ways
    Big 3 in 4ga kicker hyperflex

    Bought from: Cochese, AJČ06, basssquared, gsr22, gymfreak101

  5. #5
    PBateman's Avatar
    PBateman is offline This is bat country....



    Join Date
    Aug 2007
    Location
    colorado
    Posts
    348
    Post Thanks / Like
    Mentioned
    4 Post(s)

    Re: t-line for sundown e8

    Just build it!



    VW passat trunk
    Alpine 9855 AC DQXS
    Sundown SAZ-4500/SAX-100.2
    Diamond D-661S comps.
    DD Z18
    148+db on music
    -------------------------
    1989 Honda CRX Si
    2 nsb90's / 2 sundown saz4500's
    4 10's and 155+db

  6. #6
    tyler_fitz's Avatar
    tyler_fitz is offline They call me Weezer

    Threadstarter


    Join Date
    Feb 2007
    Location
    Hutchinson, KS
    Posts
    2,014
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: t-line for sundown e8

    here we go,

    Quote Originally Posted by Immacomputer View Post
    If you think the math is easier, you must have built it according the steve meade forum tutorial, which says to use the Sd and Fs of the driver and go to town. This is not an accurate transmission line model and I would bet my life that if you measured your impedance curve you would have to distinct spikes (which means it's a 1/4 wave resonator and not a transmission line for that driver).

    Looks good and I bet it sounds great though!
    and...

    Quote Originally Posted by Twisted_0912 View Post
    wow that steave meade tutorial was fail then i dont think anyone should use it.
    and then...

    Quote Originally Posted by Immacomputer View Post
    I've been saying that for a while. You can still get good results from it though so it's not a completely bad thing, just very misleading and uninformed.

    It's kind of sad that people rag on PWK transmission line designs when he has a much better grasp of 1/4 wave resonators than that guy does.



    1995 Dodge Dakota Ext. Cab
    Sub: 15" Fi Q
    Amp: Kicker ZX1000.1
    Box: 3.0 @ 35hz, aero
    HU: Pioneer 680mp
    Speakers: pioneer 3-ways
    Big 3 in 4ga kicker hyperflex

    Bought from: Cochese, AJČ06, basssquared, gsr22, gymfreak101

  7. #7
    tyler_fitz's Avatar
    tyler_fitz is offline They call me Weezer

    Threadstarter


    Join Date
    Feb 2007
    Location
    Hutchinson, KS
    Posts
    2,014
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: t-line for sundown e8

    bump for a second opinioin

    i guess immacomputers main beef with the t-line tutorial is that it doesnt account for cabin gain, but since this is going in a large room will that even matter?



    1995 Dodge Dakota Ext. Cab
    Sub: 15" Fi Q
    Amp: Kicker ZX1000.1
    Box: 3.0 @ 35hz, aero
    HU: Pioneer 680mp
    Speakers: pioneer 3-ways
    Big 3 in 4ga kicker hyperflex

    Bought from: Cochese, AJČ06, basssquared, gsr22, gymfreak101

  8. #8
    Volenti's Avatar
    Volenti is offline Senior VIP Member



    Join Date
    Feb 2006
    Location
    Australia
    Posts
    271
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: t-line for sundown e8

    You still get "cabin gain" in a room bit it's not as dramatic and at a far lower frequency than in a car.

    Since you are looking at a design for home I suggest you check out this link http://www.diyaudio.com/forums/showt...threadid=97674 It's the "new hotness" when it comes to enclosure design, yes it's a horn, but the modeling software used will also model T-lines just as easily, there's no need for guesswork or rules of thumb in T-line/horn design anymore.




Closed Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum