Moore941 Posted February 23, 2009 Report Share Posted February 23, 2009 So when i acquired my jl 12w7 my buddy had a box for it built so he gave me that with it when i traded him and i did the measurements out on it yesterday and i used the lxhxw / 1728 to get the cubes of the box and it came out to 2.4 in a sealed box, jl reccomends 1.375 after sub displacement am i losing alot by having such a big box cuz it sounds decent for still having 8 seats in a durango but would like to go louder as i plan to put a second 12w7 in by summer but for now i was just wondering if cutting the height on my box and resealing it closer to the jl reccomendation would help any. any input on this would be great seeing as im pretty much a noob to this. thx Quote 2000 White Dodge Durango 5.9L Flowmaster 40 Series through 2 1/2" with and open cat. 1 Dc lvl5 18 4 6.5 seleniums and 2 D200 Selenium Horns on Rockford 500.2 Big three upgrade and a kinetik HC1800 in the back with all 1/0g knu wire shootin for 145+ Link to comment Share on other sites More sharing options...
Kapetol T Posted February 23, 2009 Report Share Posted February 23, 2009 So when i acquired my jl 12w7 my buddy had a box for it built so he gave me that with it when i traded him and i did the measurements out on it yesterday and i used the lxhxw / 1728 to get the cubes of the box and it came out to 2.4 in a sealed box, jl reccomends 1.375 after sub displacement am i losing alot by having such a big box cuz it sounds decent for still having 8 seats in a durango but would like to go louder as i plan to put a second 12w7 in by summer but for now i was just wondering if cutting the height on my box and resealing it closer to the jl reccomendation would help any. any input on this would be great seeing as im pretty much a noob to this. thx Is this a sealed or ported box? Quote Link to comment Share on other sites More sharing options...
Armoredhaulin Posted February 23, 2009 Report Share Posted February 23, 2009 So when i acquired my jl 12w7 my buddy had a box for it built so he gave me that with it when i traded him and i did the measurements out on it yesterday and i used the lxhxw / 1728 to get the cubes of the box and it came out to 2.4 in a sealed box, jl reccomends 1.375 after sub displacement am i losing alot by having such a big box cuz it sounds decent for still having 8 seats in a durango but would like to go louder as i plan to put a second 12w7 in by summer but for now i was just wondering if cutting the height on my box and resealing it closer to the jl reccomendation would help any. any input on this would be great seeing as im pretty much a noob to this. thx I try to keep my enclosures within +/- 10% of the reccomended enclosure volume for sealed specs. I would think that because of the enclosure being over 1 cube larger than reccomemded that it is not playing to it's full potential and be extra "boomy" sounding. I would suggest that before you start cutting up the enclosure that you just temporaraly add some wood inside to reduce the air space and see what it does for you output. 1 cube is alot of space to fill up but it should give you a good idea as to what's up. Quote "I don't bullshit. I do what I say & say what I mean." http://www.cardomain.com/ride/2925230 http://www.armoredhaulin.com Link to comment Share on other sites More sharing options...
SubSonic Posted February 23, 2009 Report Share Posted February 23, 2009 Well, its going to sound alot cleaner if its a smaller box, as in you will hear the bass notes better and will be hearing more highs. but if its a bigger box. u are able to hit more lows, and get more moving air and such, thats what iv seen with this kind of problem.. Quote Re Audio Diamond Audio Alpine Audio Rocksford Fosgate DB Link Link to comment Share on other sites More sharing options...
brewer_brewer Posted February 23, 2009 Report Share Posted February 23, 2009 what kind of amp are you using? if you're looking to get a lil louder then put an aeroport in that box. Quote REFS http://www.caraudioclassifieds.org/forum/itrader.php?u=2026 http://www.stevemeadedesigns.com/board/topic/44535-official-brewer-brewer-feedback/page__p__625998__hl__brewer__fromsearch__1entry625998 "you're not allowing natural selection to work, you're like the guy that invented the seatbelt" Link to comment Share on other sites More sharing options...
Moore941 Posted February 23, 2009 Author Report Share Posted February 23, 2009 I try to keep my enclosures within +/- 10% of the reccomended enclosure volume for sealed specs. I would think that because of the enclosure being over 1 cube larger than reccomemded that it is not playing to it's full potential and be extra "boomy" sounding.I would suggest that before you start cutting up the enclosure that you just temporaraly add some wood inside to reduce the air space and see what it does for you output. 1 cube is alot of space to fill up but it should give you a good idea as to what's up. Yea i was thinking about that just blocking off a portion of the box before i cut any off of ill try that and see how it works out Quote 2000 White Dodge Durango 5.9L Flowmaster 40 Series through 2 1/2" with and open cat. 1 Dc lvl5 18 4 6.5 seleniums and 2 D200 Selenium Horns on Rockford 500.2 Big three upgrade and a kinetik HC1800 in the back with all 1/0g knu wire shootin for 145+ Link to comment Share on other sites More sharing options...
Moore941 Posted February 23, 2009 Author Report Share Posted February 23, 2009 what kind of amp are you using?if you're looking to get a lil louder then put an aeroport in that box. Its an autotek 1400.1 mean machine its a little much for it but i got it cheap lol and where could i get an aeroport? Quote 2000 White Dodge Durango 5.9L Flowmaster 40 Series through 2 1/2" with and open cat. 1 Dc lvl5 18 4 6.5 seleniums and 2 D200 Selenium Horns on Rockford 500.2 Big three upgrade and a kinetik HC1800 in the back with all 1/0g knu wire shootin for 145+ Link to comment Share on other sites More sharing options...
Moore941 Posted February 23, 2009 Author Report Share Posted February 23, 2009 would these ports work? Quote 2000 White Dodge Durango 5.9L Flowmaster 40 Series through 2 1/2" with and open cat. 1 Dc lvl5 18 4 6.5 seleniums and 2 D200 Selenium Horns on Rockford 500.2 Big three upgrade and a kinetik HC1800 in the back with all 1/0g knu wire shootin for 145+ Link to comment Share on other sites More sharing options...
Torres Posted February 23, 2009 Report Share Posted February 23, 2009 when you did the math...did you use outer measurements? if you did, then wood displacement wasnt taken out of the total so the box appears to be bigger than it really is Quote Link to comment Share on other sites More sharing options...
Torres Posted February 23, 2009 Report Share Posted February 23, 2009 those ports would work. you could even use large PVC pipe if the diameter is the same. but dont be too disappointed if the output isnt what you expect. ported boxes tend to be a lil larger before port displacement and everything Quote Link to comment Share on other sites More sharing options...
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