144.6 with 2 15s

Discussion in 'Subwoofer Box and Custom Fabrication' started by liftedranger08, Dec 27, 2009.

  1. liftedranger08

    liftedranger08 Full Member

    144.3 with 2 15s

    Well i did a little bit of testing today with my new lab. I had an old box laying around for 2 15s so i put2 of my q power 15s in there and wired my sundown 2000 at 1 ohm. The box is 2 chambers and each chamber is 2.5 cubes with 2 4" pvc ports per chamber tuned to 38-40 hz. The first test, i did a 143.0 at 48 hz. Then i raised my pvc ports up about 2" and i did a 143.7. Then i put the ports on the outside and i did a 144.3 and a 143.7. Let me know what yall think.
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    Im redoing to port on the box now and doing a slot port with 1 chamber tuned to 43 hz.
     
    Last edited: Dec 28, 2009
  2. pedro quiroga

    pedro quiroga Well-Known Member

    nice! how is it on every day music?
     
  3. liftedranger08

    liftedranger08 Full Member

    it does pretty good. Im redoing it now bc i want a low note monster. Im doing 5 cubes at 29 hz to help these little 15s get down on the lows. I know it will sascrifice the dbs, but im just doing this litle box until my 8s get here.
     
  4. Kvo_8

    Kvo_8 Full Member

    nice man! seems like 2000 watts is good for about 140-145 in your car, eh?
     
  5. liftedranger08

    liftedranger08 Full Member

    Yea thats what it looks like. These subs dont really like 1000 watts a piece but o well.



    Here is the tear down of the box. Im redoing it so it will be 1 common chamber. It will be 5 cubic ft tuned to 29 hz with 69.75 sq inches of port. Maybe my 15s will hit the lows now.

    Ports removed
    [​IMG]

    Front baffle removed
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    Divider removed and new port put into place. The new port is 15.5x4.5x37.5
    [​IMG]
     
  6. Kvo_8

    Kvo_8 Full Member

    hopefully the slot port works out better. you've been doing a lot of testing with your truck lately
     
  7. liftedranger08

    liftedranger08 Full Member

    Yea, ive just been in a testing mood. LOL Ill prolly be done testing after i get this box redone unless i dont like the way it sounds. Hopefully i get low with this box and still bassrace in the 129.9 for a few competitions in january. Maybe this setup will be good enough until my 8s come in. I cant stand riding around with now bass.
     
  8. Lazy Eye

    Lazy Eye Full Member

    why did you take the 4 15's out already?
     
  9. liftedranger08

    liftedranger08 Full Member

    I took them out so i could test with the sundown 8s. Im gona put some sound deadener in this week so i didnt bother putting it back in. The subs and box are for sale also.
     
  10. Lazy Eye

    Lazy Eye Full Member

    I see I see,
    just wondering how much ya asking for the subs and box?
     
  11. liftedranger08

    liftedranger08 Full Member

    Ill take $100 each obo for subs and $300 obo for the box. I cant really ship the box since its too heavy.
     
  12. Lazy Eye

    Lazy Eye Full Member

    ok.. I'm wanting to upgrade but I'm kinda broke as of now
     
  13. liftedranger08

    liftedranger08 Full Member

    Well i got the box done this morning. :) Im waitin on the glue to dry then im putting it in the truck. Ill get some pics of it in the truck and maybe a vid or 2. :)
    [​IMG]
     
  14. liftedranger08

    liftedranger08 Full Member

    Well i did some more testing. The score went down on music but up on a burp. It did a 144.4 on a burp and a 143.4 on music.
     
  15. liftedranger08

    liftedranger08 Full Member

    Well i tried a few more things today to try to gain some dbs.

    First thing is ductape around the front baffle and put some bracing inside the box. Heres the score.
    [​IMG]

    Then i put tape around the edge of the subs to seal them off so there is no leaks.
    [​IMG]

    Then i pushed my seat all the way back and put the back straight up.
    [​IMG]

    It also did a 149.3 outlaw. My camera had a little dust on it for this pic.
    [​IMG]
     
  16. pedro quiroga

    pedro quiroga Well-Known Member

    have you tried removing the seat? i think even moving the visor helps too.
     
  17. liftedranger08

    liftedranger08 Full Member

    I havnt removed the seat yet but i did fold down my passenger visor and gained .1 db. Im getting to the point now where im not gona gain much more. I think i am about at the peak of these subs. LOL
     
  18. pedro quiroga

    pedro quiroga Well-Known Member

    i have one more, it may sound weird but, try closing the a/c vents. see what that does.

    remember every tenth counts in this sport.
     
  19. liftedranger08

    liftedranger08 Full Member

    I closed all the vents but i didnt gain anything. Im gona try sub and ports forward and also try them downfiring.
     
  20. jonnyv713

    jonnyv713 The Young Gun of CAT

    man i wish i had a TL! who got u that for christmas?