Wynndiesel

I don't know how to add photo's

Yea im gonna try it out, and try to seal off the rear ports to see how it sounds as a 4th order

yea that's me! had 3 xl 18's, then ran two for a while, now 4 15" m2 XL's. ripping it out tomorrow for rebuild :-) no numbers

XL 18

this pic is the 28hz port it is 6.25in tall, 30in wide, 35in deep.but only 15in of it goes into box. it is shaped like a L, when i remove the 28hz port it becomes a normal sub up port back box tuned to 43hz port is [7.75in tall, 31.5in wide, 11in deep. 43hz port has 8in from back hatch to breath. internal box volume before sub and port displacements is 17.8, outer mesurements are 23in tall, 45in wide, 36in deep. double baffle, dowel bracing

they just need lots of power and they'll slam! 2000w per sub

can't figure out how to add as attachment

I had 2 15in hcca's on a aq 3500 and I loved em! got loud and low! wish I would never have sold em

28hz port is 30in x 6.25 35in deep 43hz port is 31.5 x 7.75 11in deep how do I load pics? I only know how to load YouTube vids

28hz port is port up! when I remove it 43hz port is port back, 28hz port slips into the 43hz port, then L's out to top of box making it port up

01 Durango

why is my 43hz port 1db quieter? because it has more port area???

I have 3 18's and 9k of power! my box is 15 cu ft after all displacements tuned between 27 and 28hz 12in of port per cu ft. my peak frequency is 43hz. why do I peak so high when I'm tuned so low? the 28hz port is removable, when I take it out, my box is 15.5 cu ft tuned to 43hz 16in of port per cu ft. still peaks at 43hz but 1db quieter. shouldn't it be louder since its tuned higher and more port area??? I can get up to a 149.6 on a term-lab. should I be hitting better numbers with my setup? should I build a better box???? any tips on how I can build a better box? (enclosure volume, port area, tuning) equipment is 3 dc xl 18's on a dc 9k, 2 330amp singer alts, 3 kinetik hc2400s, 2 hc3800s,with 6 runs of pos and 4 runs of neg 1/0 gauge

it's working now. order completed!

trying to order, checkout failed??? can't proceed to checkout???