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T line for,two twelves!!!


brent379

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Posted

Ok. I got two fi x twelves in an extended cab dakota and i wanna build a tline for them but im confused on how to get specs for the box...can someone,plz help me out!!!!

Posted

Have you read the sticky on them?

"The strongest reason for people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government." -- (Thomas Jefferson)

Posted

9 foot long port with a port area of roughly 2(π6²)

Good luck

His max width should be around 4ft, so it would have to bend 2 times, right? 4ft->bend->4ft->bend->1ft. Do you think it would be possible if, say, he walled off the vehicle? I'm just curious is all.

Bassless once again. Can't seem to keep a system for more than a few weeks :)

Saving for a '06 Nissan 350z, look for build around June 2012.

Posted

Whoa wait how did u get 9 ft?????? Ive read quite abit on them and im havin a hard time understanding it all....i mean i can do a 9 ft port in a box but how do u go about finding how tall...deep...and wide the box should be for the,tline?? I need like a simple break down fron the,beginning...i REALLY wanna do this bad!!!!

Posted

9 feet is the length of the box because the entire box is the port. However many times you have to bend it to get the internal length to be 9 feet is up to you.

8 feet is about 35hz tuning

9 feet gets you 31.4hz.

282.5/length = tuning frequency. 282.5 is 1130 (speed of sound) divided by 4 (quarter wave theory) btw. Read the sticky...

MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..."

Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through.

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Posted

best way to design a tline is with a piece of paper (graph paper works well) and a pencil

the way that work best for me is two bends. air flow goes right, then left, then forward.

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
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Magnum AB XFL 12s Build
Newest Magnum Build

Posted

Ooooo ok im starting to get it now.. If i read the sticky right... The port length should equal or be close to the total cone area of both twelves right????

Posted

Ooooo ok im starting to get it now.. If i read the sticky right... The port length should equal or be close to the total cone area of both twelves right????

No, the port area is determined by the total cone area. The port length is determined by desired tuning.

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