jmabrao Posted November 21, 2014 Report Share Posted November 21, 2014 Hey I'm going to building a new box for my alpine, and came up with 2.5cf tuned to 32 hz. Was hoping someone would be able to spot check my work and see if I'm way off. Thanks Joel Link to comment Share on other sites More sharing options...
jmabrao Posted November 21, 2014 Author Report Share Posted November 21, 2014 Trying to post an image but all I am getting is "You are not allowed to use that image extension on this community" any ideas? Link to comment Share on other sites More sharing options...
jmabrao Posted November 21, 2014 Author Report Share Posted November 21, 2014 Link to comment Share on other sites More sharing options...
Joe X Posted November 21, 2014 Report Share Posted November 21, 2014 Didn't you mean Alpine SWS-15D2? Link to comment Share on other sites More sharing options...
jmabrao Posted November 21, 2014 Author Report Share Posted November 21, 2014 No it's a 12" Link to comment Share on other sites More sharing options...
Syphlyn Posted November 21, 2014 Report Share Posted November 21, 2014 No it's a 12" Alpine suggests 1.0 - 1.5 cubic feet net internal volume for a sws 12d2. I wouldn't do anything higher than 1.75 unless your're running low power. They're rated at 500w rms so if you're running 500w I would stay at or near 1.5 net. Syphlyns 2000 F150 4.6L V8 H/U: Kendwood KDC-X898 Speakers: 4 x Alpine SPR-68 Speakers 4 Channel Amp: Alpine PDX-F4 Sub: Sundown Zv4 12 Sub Amp: Sundown SAZ-2000D Box: 2.75 Cu Ft @ 31Hz Alternator: Mechman 250A elite series Wiring: All KnuKoncepz 0 gauge OFC + KnuKonceptz Krystal RCAs Link to comment Share on other sites More sharing options...
jmabrao Posted November 21, 2014 Author Report Share Posted November 21, 2014 Well if I'm not mistaken the type rs are rated for like a 1.4cf box but people seem to love them in a 2.25 to 2.5cf box. I mocked it up in bass box and it doesn't appear to reach the xmaxx limit until slightly below tuning. Link to comment Share on other sites More sharing options...
Syphlyn Posted November 21, 2014 Report Share Posted November 21, 2014 Well if I'm not mistaken the type rs are rated for like a 1.4cf box but people seem to love them in a 2.25 to 2.5cf box. I mocked it up in bass box and it doesn't appear to reach the xmaxx limit until slightly below tuning. Type Rs are rated for 1.7 I think. most people put them in a 4cu ft box as they usually have a pair so 2.0 each which isn't fair from 1.7. You're trying to go to 2.5 from 1.5, that's a huge leap. Syphlyns 2000 F150 4.6L V8 H/U: Kendwood KDC-X898 Speakers: 4 x Alpine SPR-68 Speakers 4 Channel Amp: Alpine PDX-F4 Sub: Sundown Zv4 12 Sub Amp: Sundown SAZ-2000D Box: 2.75 Cu Ft @ 31Hz Alternator: Mechman 250A elite series Wiring: All KnuKoncepz 0 gauge OFC + KnuKonceptz Krystal RCAs Link to comment Share on other sites More sharing options...
Joe X Posted November 21, 2014 Report Share Posted November 21, 2014 Well if I'm not mistaken the type rs are rated for like a 1.4cf box but people seem to love them in a 2.25 to 2.5cf box. I mocked it up in bass box and it doesn't appear to reach the xmaxx limit until slightly below tuning. The numbers for net you provide were used for the older 4th gen subs and below, but these 5th gen are made to work in smaller boxes. If you decide to go ahead with it set your subsonic filter to box tuning and I hope you like the sound. Link to comment Share on other sites More sharing options...
jmabrao Posted November 21, 2014 Author Report Share Posted November 21, 2014 Is it just the power handling you guys are worried about or will it legitimately sound bad? Link to comment Share on other sites More sharing options...
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