Transmission line box for ace_800 at caraudio.com for his True Bass Solutions 8" sub. The line is tuned to 35hz, just under the sub's fs. This will be going in his 1966 Pontiac GTO.

Edited June 1, 201114 yr by RAM_Designs

This thing was a pain to plan out...took me like 5 tries to get my path down right and get the length I needed for the line.

Edited June 1, 201114 yr by RAM_Designs

Why do you think that is a t-line?

It's sort of a hybrid due to the loading chamber. I generally like to run an angled piece from the sub baffle to where the normal line starts, so that the chamber tapers throughout it's entirety and acts less like loading chamber than a normal 90° angled chamber would. I've done a few like this with the big 45's feeding towards the line and it seems to work really well, but I would rather be able to taper the chamber all the way down. I know it's not a textbook example of a t-line.

Edited June 1, 201114 yr by RAM_Designs

Why do you think that is a t-line?

while i've never done one (i'll never do one in a vehicle of my own.. i'm too spl oriented.. maybe in a house oneday, though), i am pretty sure that the driver used, it's SD value on average is the area opening inside throughout the whole design...

It appears that there IS a loading chamber directly behing the motor for 2 reasons..

1- the area inside is way larger than the port area...

2- notice how i said port area..

Now.. correct me if i'm wrong but i believe t-line is an average of the SD value of the sub throughout entire t-line and the length is based on 1\4wave when choosing desired frequency?

if not, tell me.. just curious.

also, does any bends inside require to be tapered and why?

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