So we finished the other box (the first pic) now i wanna play with a t-line. I've drawn one up on sketch up tell me what you think.

How did you come up with the tuninig? Box is a little small for a T-Line.

I think you wasted some wood. That is not a Transmission line.

Here is a good start if you are interested in designing and building anything other than a standard ported or sealed enclosure.

Transmission Line Theory

Wasting your time and money..and will end up with a dead sub.

Don't do it ..just giving you fair warning.

i thought a t-line had no real chamber compared to what i see in that pic..

also, i thought a t-line has to keep the port width the same throughout the entire box...

And... tuning in the 30s would require what? 7-8ft long run?

Not a T-line.

Havent built the box yet thats why i asked what yall thought, the first box is just a regular ported box. i got the setup from this site: 1/4 Wave Flared Vent T-Line/Horn/Bass Reflex Enclosure Calculator | DB DYNAMIX AUDIO i just went off of that calculator they have on there i have never actually built a t-line before but thanks for the advice