box design transmission line

[azimuth 5,000+ posts]

for an 8 inch sub. haven't decided on the sub yet. opinions? too long? the red is 1/2 inch instead of 3/4.

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[da box king 10+ year member]

what driver?

 

[azimuth 5,000+ posts]

what driver?

not sure yet. i need an 8 with a low .qts, qes and an fs close to 40.

 

[RAM_Designs 5,000+ posts]

old assassin?

 

[azimuth 5,000+ posts]

old assassin?

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-854

possibly. this tang band has a low .qes and .qts, but the fs is a little low. where can i find those?

 

[azimuth 5,000+ posts]

RE 8's also have a low qts and qes, but fs is far under 40hz.

 

[Rashaddd 5,000+ posts]

use corner pieces, and recalculate the length, it will be shorter

 

[azimuth 5,000+ posts]

use corner pieces, and recalculate the length, it will be shorter

i might do that.

 

[Rashaddd 5,000+ posts]

i might do that.

without them, you have significantly varying line areas which usually has adverse effects, such as killing output

and when you add them, you definitely need to recalculate the length because you'll lose a few inches or more in each of the corners

 

[azimuth 5,000+ posts]

without them, you have significantly varying line areas which usually has adverse effects, such as killing output
and when you add them, you definitely need to recalculate the length because you'll lose a few inches or more in each of the corners

don't i calculate down the middle? i planned on putting in 45 degree wedges in the corners, but didn't know they shorten the actual length.

 

[Pyro_By_Nature 5,000+ posts]

Looks ok, but why does it look like the sub is inverted in your drawing //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[FootlongSam 10+ year member]

I'm not sure about this design. I mean do it, and let us know how it sounds, but the t-lines that I've been playing around with (granted I just started ~8 months ago, and have only built a handfull of them) have always had a loading chamber, a compression chamber, an expansion chamber, and an acceleration chamber. T-lines can be picky, but when built properly they will slam. I'm interested to see how this turns out. I'm still in the begining stages of learning about t-lines, so any info on how this box performs is appreciated.

 

[azimuth 5,000+ posts]

Looks ok, but why does it look like the sub is inverted in your drawing //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

it is inverted.

 

[loud-n-low 10+ year member]

e8, crystal cmp?

 

[azimuth 5,000+ posts]

I'm not sure about this design. I mean do it, and let us know how it sounds, but the t-lines that I've been playing around with (granted I just started ~8 months ago, and have only built a handfull of them) have always had a loading chamber, a compression chamber, an expansion chamber, and an acceleration chamber. T-lines can be picky, but when built properly they will slam. I'm interested to see how this turns out. I'm still in the begining stages of learning about t-lines, so any info on how this box performs is appreciated.

i don't even have as much experience as you. never done a t-line before. it's perfect for a false floor design in my s10. less than 10 inches high, spanning the entire floor surface of my extended cab.