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T line help


nepjr32

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Building a t line for a infinity reference series 1230 because never built i T line before and wanted to try.

Im using http://www.t-linespeakers.org/design/classic.html. and was wonder how many channels back and forth should you make in the box. Most boxes I have seen are 1-3 channels back and forth but have seen as 5 and higher. Was thinking of making it with two channels back and forth any thoughts for the newbie?

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By channels I take it you mean folds or turns? I'm no expert, but from what I've read you want as few folds as possible. The main reason you see the really complicated t-lines with lots of turns is due to space limitations for the boxes exterior dimensions.

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Is it as many channels to get the volume of sub would need? which is 2 cubic feet

There's no compression chamber in a t-line so there's no cubic feet to meet or displacements. The classic method calls for a line cross-sectional area = ~ Sd and center line length = ~ speed of sound/( 4 x Fs), Less foldings are nice but it also depends on what the space available will let you do.

Sd and Fs are sub parameters.

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Is it as many channels to get the volume of sub would need? which is 2 cubic feet

The box volume a sub needs only pertains to sealed and ported boxes, its irrelevant to t-lines.

Like ported boxes, t-lines are very flexible and give you a lot of control over the way the sub will sound. If you are going to be designed a building a t-line, it would benefit you to have some understanding of how the specs of the line effect output.

Making the line area = cone area usually results in very peaky output and much lower mechanical power handling, very similar in result to what you get when you make a ported box really big.

Instead of making the line with a constant area, you can make a tapered line. It will make the line perform like its a little longer than it really is, which can save some space, but its a lot more difficult to design.

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Is it as many channels to get the volume of sub would need? which is 2 cubic feet

The box volume a sub needs only pertains to sealed and ported boxes, its irrelevant to t-lines.

Like ported boxes, t-lines are very flexible and give you a lot of control over the way the sub will sound. If you are going to be designed a building a t-line, it would benefit you to have some understanding of how the specs of the line effect output.

Making the line area = cone area usually results in very peaky output and much lower mechanical power handling, very similar in result to what you get when you make a ported box really big.

Instead of making the line with a constant area, you can make a tapered line. It will make the line perform like its a little longer than it really is, which can save some space, but its a lot more difficult to design.

ok so then how do you decide what width of your entire box?

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