Originally Posted by aznboi3644

Random drawing of a 4th order bandpass...if designed correctly it will have no where near the dimensions of that.

Originally Posted by Toad420

So this is what i've come up with today...





But i can't find anywhere to calculate internal volume, tuning, or volume for the opening where the subs are faced at each other. Any help?

O and ports will be faced up or back....

Originally Posted by KICKERASSMAN

Thats like a isolobaric 4th order bandpass lol

Originally Posted by Toad420

So this is what i've come up with today...





But i can't find anywhere to calculate internal volume, tuning, or volume for the opening where the subs are faced at each other. Any help?

O and ports will be faced up or back....

Originally Posted by Toad420

After reading(more trying than actual reading) of that T-Line website I've decided to give a bandpass box a try instead. Any ideas on tuning for 2 1508's in a bandpass? Also which order?

Originally Posted by Used2Know

You get a few people that try to design and build a higher order enclosure or quarter wave resonator. They choose ill-suited drivers along with the fact that the design is wrong from the getgo, due to posted half truths and walkthroughs. End up with horrid results, then just label the order inefficient and others quote them. Or on the other end of the spectrum they get lucky, label them godlike... then once again others quote them, unfortunately others dont share the same experience then. Learn theory and design, then practice... happy building.

Originally Posted by Used2Know

I suggest you both learn more. An improperly designed and built enclosure in any order will affect a driver significantly. Go here and read if you are interested in tlines.

You get a few people that try to design and build a higher order enclosure or quarter wave resonator. They choose ill-suited drivers along with the fact that the design is wrong from the getgo, due to posted half truths and walkthroughs. End up with horrid results, then just label the order inefficient and others quote them. Or on the other end of the spectrum they get lucky, label them godlike... then once again others quote them, unfortunately others dont share the same experience then. Learn theory and design, then practice... happy building.

Originally Posted by Toad420

I have been trying to decide what to put in the Diamante next(selling the 15" Q) and i've narrowed it down to either 2 1508's or 4 E8's.

Now if i get the 1508's I kinda wanna try to make a t-line because... well... it looks fun. I do have a USAmps XT2000D that they will be running on.

I'm looking for any kind of start off help. For the chamber do I still stick to the recommended size? and what tuning should I try?

Any other help would be greatly appreciated

Originally Posted by MikeWilson

By the sounds of it, you probably don't know much about T-lines (no offense). Secondly, and more commonly, T-lines are mostly built incorrectly, and a properly built vented enclosure, a horn, or a higher order bandpass will be much louder. Finally, T-lines are known to reduce the power handling capabilities, both thermally and mechanically.

Originally Posted by aznboi3644

reduce thermal power handling??? NO

Mechanical??? Yes

Originally Posted by MikeWilson

By the sounds of it, you probably don't know much about T-lines (no offense). Secondly, and more commonly, T-lines are mostly built incorrectly, and a properly built vented enclosure, a horn, or a higher order bandpass will be much louder. Finally, T-lines are known to reduce the power handling capabilities, both thermally and mechanically.

Originally Posted by MikeWilson

By the sounds of it, you probably don't know much about T-lines (no offense). Secondly, and more commonly, T-lines are mostly built incorrectly, and a properly built vented enclosure, a horn, or a higher order bandpass will be much louder. Finally, T-lines are known to reduce the power handling capabilities, both thermally and mechanically.