20packofsweetleaf

that is correct. to bad i was not comparing them that way but with output which is very much the same. some times less depening on how dampened they are. but this is also depening on the sub and how well it preforms in that box.

here is line length tLL = 0.25 x c' / fs. were c' is equal; to the speed of sound 13560 so 3390 divied by your fs of the sub. to get t-line length in inches also these guys are right you do not need a box this big most people use the easy way of doing it so it will fit they will tune it between 48-35 hertz which is 6 to 8 foot how to find were your tuned at is take the strait line down the center of the line and devide by 3390 to get the hertz were the box is going to peak at.it will drop off after this point. a 7 foot long line will play down in the 20 hz range no problem. does not mean it will be loud at 20 hertz area of the line opening is based on sd of the sub if you go larger you will lose pe in other words watts need to push it so in other words you can blow a sub going to big with the sd or over heat the motor by dampening with the sd of the sub.and making the box to small this is were it is either trial and error or buy the soft ware i suggested what i suggest you check out if designing lines is old colony books on line store they have a soft ware program for t line it like 130 bucks just google old colony book store. and yes the bass is compareable to a well built ported box so it is basicaly a waste of your time and money to build a box 3-5 times the size of a ported and get about the same output. but ya some people do it just to have fun lol'z like me lol'z Good read. I have my 6th order BP to bump now anyway, i guess a T-line is for another day. ya port are very much the same out put by increasing ripple in a ported by 3 db's you get about the same out put as a t line but most sq designers try to get rid of the ripple so you get a flat responce. but if looking to bascally double your power you need ripple +3db's same as a tline. so if you know any thing about frequency responce graph you will ripple is listed in bull lock in boxes in these graph of alternitive alignments but if you do not. here are a couple good reads bull lock on boxes is awesome ported info also loud speaker design cook book has it points you can find them chep on amazon .com e bay's half etc.... by increasing ripple you get to use a smaller box then a t line with the same output. just a tip:

here is line length tLL = 0.25 x c' / fs. were c' is equal; to the speed of sound 13560 so 3390 divied by your fs of the sub. to get t-line length in inches also these guys are right you do not need a box this big most people use the easy way of doing it so it will fit they will tune it between 48-35 hertz which is 6 to 8 foot how to find were your tuned at is take the strait line down the center of the line and devide by 3390 to get the hertz were the box is going to peak at.it will drop off after this point. a 7 foot long line will play down in the 20 hz range no problem. does not mean it will be loud at 20 hertz area of the line opening is based on sd of the sub if you go larger you will lose pe in other words watts need to push it so in other words you can blow a sub going to big with the sd or over heat the motor by dampening with the sd of the sub.and making the box to small this is were it is either trial and error or buy the soft ware i suggested what i suggest you check out if designing lines is old colony books on line store they have a soft ware program for t line it like 130 bucks just google old colony book store. and yes the bass is compareable to a well built ported box so it is basicaly a waste of your time and money to build a box 3-5 times the size of a ported and get about the same output. but ya some people do it just to have fun lol'z like me lol'z