CJ18 Posted November 2, 2010 Author Report Share Posted November 2, 2010 Ok got a good start on the 4 XL 18 box tonight Box Specs 49wide x 48deep x 26.75tall 27.55ft3 before displacements 22.25ft3 after displacements port is 8x46x16 tuned to 35.25hz. This works out to 16.55in2 per ft3 and a total of 368in2. I would have preferred to be able to build the box a little bigger to get 6ft3 per sub but this is the biggest box I can fit under the window line. Box is double ply and the top is going to be triple ply with the 3rd layer serving as an inset. Sorry I didnt get alot of pics, but working by myself I forget to take assembly pics. I will get more tomorrow once i get it finished. Quote Link to comment Share on other sites More sharing options...
CJ18 Posted November 2, 2010 Author Report Share Posted November 2, 2010 The 2 lips that are left on the box in the pics, the smaller one gets a second layer of mdf and the bigger one gets trimmed flush with the sides. I accidentally cut the front and back 3" to tall. I guess its better to cut it too big than too small though. Quote Link to comment Share on other sites More sharing options...
matt402 Posted November 2, 2010 Report Share Posted November 2, 2010 nice plans & box so far cj. is this subs & port up? DC FTMFW!!! Quote Link to comment Share on other sites More sharing options...
AA98hoe Posted November 2, 2010 Report Share Posted November 2, 2010 thats a big ass box cj what kinda power you running to the xls Quote TEAM DC AUDIO VEHICLE:98 chevy tahoe 2wd 3-4 drop HEADUNIT:alpine 9886 PREAMP:arcaudio FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door KICKPANELS:jl audio 5 1/4 REAR DOORS: dd components 6 1/2s HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV SUB AMP: 2-dc7.5s ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket WIRE:10-runs 0g front to back BATTERIES:6-d1400s TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5. Link to comment Share on other sites More sharing options...
CJ18 Posted November 2, 2010 Author Report Share Posted November 2, 2010 nice plans & box so far cj. is this subs & port up? DC FTMFW!!! Yep subs and port are up. I have already run into a small issue in getting 2 18s to fit between the back and port walls. It is going to be a very tight fit, but it will work. I would have liked to make the box about 3 inches longer but this is as big as I can fit in the van. He is already taking out both rows of back seats. The one thing yall dont see is a battery box that I will be building that goes on the front of the box for 3 kinetik 3800s and will also be used as an amp rack. thats a big ass box cj what kinda power you running to the xls for right now he is going to be running 2 soundstream 3400s. 1 to each pair. I know this isnt enough power for the XLs, but I wanted to leave room to add more power later. Those amps are rated to put out 3400w at .5 ohm, so I am going to try and wire as low as I possibly can to allow for box rise and get as much power out of them as I possibly can. In the future I think he will want to add 2 more amps to properly power the subs, that is why I am doing XLs instead of 4s. Quote Link to comment Share on other sites More sharing options...
CJ18 Posted November 2, 2010 Author Report Share Posted November 2, 2010 Got the front, back, and bottom doubles screwed in place. Just have to trim the front and back down flush with the sides and mount the 3 tops. Quote Link to comment Share on other sites More sharing options...
AA98hoe Posted November 2, 2010 Report Share Posted November 2, 2010 (edited) box may be a lil big for that much power, looks great though i did 2 xls sub an port up and it pounded hard. imo sub up port back is way louder though . im posted Edited November 2, 2010 by dc98hoe Quote TEAM DC AUDIO VEHICLE:98 chevy tahoe 2wd 3-4 drop HEADUNIT:alpine 9886 PREAMP:arcaudio FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door KICKPANELS:jl audio 5 1/4 REAR DOORS: dd components 6 1/2s HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV SUB AMP: 2-dc7.5s ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket WIRE:10-runs 0g front to back BATTERIES:6-d1400s TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5. Link to comment Share on other sites More sharing options...
dwright27 Posted November 2, 2010 Report Share Posted November 2, 2010 box may be a lil big for that much power I disagree. Thats only 1700 per if he gets rated power from the amps, not even mentioning rise. 5.5 - 6.5 per woofer is golden IMO. Quote 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
kinggamer1285 Posted November 2, 2010 Report Share Posted November 2, 2010 looking good more pics lets go Quote Link to comment Share on other sites More sharing options...
CJ18 Posted November 2, 2010 Author Report Share Posted November 2, 2010 Im gonna go out in about an hour if it doesnt start raining and get the big box finished up so I can start on the box for my level 5s. Im beat right now my trainer just kicked my ass!!! Quote Link to comment Share on other sites More sharing options...
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