Zak Massey Posted September 26, 2013 Report Posted September 26, 2013 I honestly have no idea where to start. What I'm looking to build a 4th order box for 2 Fi BL18's that I need to fit in my Cavalier(coup). What size should each part of the box be and how do I go about tuning it? Each Sub will be given 2500 watts rms. Any Ideas on where to start? '03 Cavalier LS Coup DC Power 270xp alt 2 Sundown Neo Pro 8's 2 Selenium ST200 tweeters 1 Sundown SAX-125.2 1 CT Sounds 125.2 2 Fi Bl 18's walled 1 CT Sounds AT7000.1D
bighossf150 Posted September 26, 2013 Report Posted September 26, 2013 I dont even know if you could fit a 4th order wall for 2 18"s in that car Used to have a loud truck 2009 Corvette Z06, H/C/I, 150 shot, g force tune, 730rwhp/690rwtq 2013 F-150 limited, MPT Tune, leveled on 35"s
Zak Massey Posted September 26, 2013 Author Report Posted September 26, 2013 From what I've heard before, 2-3 cubes on the sealed and 4-6 cubes one the ported side for the box would work. If I went on the low side I could pull that off actually, I'm not entirely positive on the numbers but I believe I have 40x28x30 inches of easily usable space for the box to go in. That's about 19 cubes to fit a 12 cubic foot box into. But I asked on here to, mainly, make sure this was accurate and to figure out how to tune it. '03 Cavalier LS Coup DC Power 270xp alt 2 Sundown Neo Pro 8's 2 Selenium ST200 tweeters 1 Sundown SAX-125.2 1 CT Sounds 125.2 2 Fi Bl 18's walled 1 CT Sounds AT7000.1D
Zak Massey Posted September 26, 2013 Author Report Posted September 26, 2013 bump '03 Cavalier LS Coup DC Power 270xp alt 2 Sundown Neo Pro 8's 2 Selenium ST200 tweeters 1 Sundown SAX-125.2 1 CT Sounds 125.2 2 Fi Bl 18's walled 1 CT Sounds AT7000.1D
n8ball2013 Posted September 26, 2013 Report Posted September 26, 2013 I had an 01. I cant see it. Its got a high hump in the middle plus a strange slant to the backseat area. Arent those per driver so on the super small side so 12 cubes gross not factoring in driver displacement port or internal dimensions. You better have grest skills at building because it would be stupid close. THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger.
WillPwn4Food Posted September 26, 2013 Report Posted September 26, 2013 No way on a 4th for 2 18s fitting. Like n8 said there's a huge hump right in the middle like my car. Most is 2 15's in a 4th... But honestly I'd do 2 18's in a flat wall or 4 15's. the 4 15's would be on the smaller side, but would work. Wall build: http://www.stevemeadedesigns.com/board/topic/174827-walled-taurus-with-lambo-doors/#entry2571893 real men dont use fuses Neither do moronsSays the guy with lambo doors on his Ford Taurus.
dblovah51 Posted September 26, 2013 Report Posted September 26, 2013 Flat wall 2 18s top port work good for a build I did 2004 trailblazer 4 FI BTL 18s (2) DC 10.0k xs power d3100s mechman 270 158.2 @41
Zak Massey Posted September 26, 2013 Author Report Posted September 26, 2013 The current flat wall in my car has the 2 18's in 8 cubes and there is a lot of unused space there. I did a mock up drawing of a box that would take up all of the usable space, and including woofer displacement and double baffling all around it works out to be 4.28 cubic feet on the sealed side and 10.45 cubes on the ported side. Is that enough room for the Bl's or would I need more? '03 Cavalier LS Coup DC Power 270xp alt 2 Sundown Neo Pro 8's 2 Selenium ST200 tweeters 1 Sundown SAX-125.2 1 CT Sounds 125.2 2 Fi Bl 18's walled 1 CT Sounds AT7000.1D
Zak Massey Posted September 27, 2013 Author Report Posted September 27, 2013 bump '03 Cavalier LS Coup DC Power 270xp alt 2 Sundown Neo Pro 8's 2 Selenium ST200 tweeters 1 Sundown SAX-125.2 1 CT Sounds 125.2 2 Fi Bl 18's walled 1 CT Sounds AT7000.1D
n8ball2013 Posted September 27, 2013 Report Posted September 27, 2013 If you rhink you hVe the space go.for it. It will need to be built completely in the car. Are you building it THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger.
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