bkolfo4 Posted January 7, 2012 Report Share Posted January 7, 2012 ok well how would you tune it low. like 30 to 32 range. say u can replace the entire port wall Going to have to reduce the port area and lengthen the ports. Why do you want so much volume for a pair of 15's? I would look at no more than 10 cuft net with ~140 sqin of port tuned to 32 Hz. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
LoudNLow931 Posted January 7, 2012 Report Share Posted January 7, 2012 You could do... 4" tall x 33.5" Wide x 28" deep and be 30.18hz 10.2 cubes. 130port area,13.4 port per foot. With 0.10 of bracing. 2008 Dodge Ram 2500 6.7l Cummins 4 FT1s C1600.2 8 PWX 8s ONX2.100 Audio Technix Wiring & Sound Deadener My Youtube Feedback Link to comment Share on other sites More sharing options...
t-money Posted January 7, 2012 Author Report Share Posted January 7, 2012 i wanna hit hard and low. move alot of air. i figured the 1 15 in a 6.5 cube box did it pretty good double the driver and power then double the box volume 2002 ford focus hatch pioneer DEH-P8400bh infinity kappa 6.5 components front and rear XS Power D1200 Shuriken BT-100 audioque 120.4 2 15 inch audioque HDC3 D2 2 audioque 2200d big 3 mechman 220a alt with external regulator 479-418-3056 Link to comment Share on other sites More sharing options...
t-money Posted January 7, 2012 Author Report Share Posted January 7, 2012 You could do... 4" tall x 33.5" Wide x 28" deep and be 30.18hz 10.2 cubes. 130port area,13.4 port per foot. would that long of a port make it loose some output? i have built alot of boxes but this is the only one that has been kicking my ass lol. thank you for helpin me out here guys 2002 ford focus hatch pioneer DEH-P8400bh infinity kappa 6.5 components front and rear XS Power D1200 Shuriken BT-100 audioque 120.4 2 15 inch audioque HDC3 D2 2 audioque 2200d big 3 mechman 220a alt with external regulator 479-418-3056 Link to comment Share on other sites More sharing options...
bkolfo4 Posted January 7, 2012 Report Share Posted January 7, 2012 You could do 20 wide x 7 high for a port. Leave you with a little over 10 cuft (depending on what the bracing is actually taking up) tuned to 32 Hz. wodl work great for that pair of 15's. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
bkolfo4 Posted January 7, 2012 Report Share Posted January 7, 2012 would that long of a port make it loose some output? i have built alot of boxes but this is the only one that has been kicking my ass lol. thank you for helpin me out here guys No - your need the length to lower the tuning. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
t-money Posted January 7, 2012 Author Report Share Posted January 7, 2012 i guess i thought the more port area the more output + the fact i calculated the port wrong. looks like surgery tomorrow. thanks guys 2002 ford focus hatch pioneer DEH-P8400bh infinity kappa 6.5 components front and rear XS Power D1200 Shuriken BT-100 audioque 120.4 2 15 inch audioque HDC3 D2 2 audioque 2200d big 3 mechman 220a alt with external regulator 479-418-3056 Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted January 7, 2012 Report Share Posted January 7, 2012 Can someone tell me how the calculator got the port volume? It says .30 cuft. An 8x8 port 3" long (2.25 internal which I see it knows) would be 9.5 x 8.75 x 2.25 = .108 cuft. It throws off the net volume a little. Not a lot in this case, but like I said above I have seen several times where it gets off pretty good on L ports. depends on port walls. THe middle one is 1 port wall, the others are 2 port walls, and you can only choose 0,1,2, or 3. Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
LoudNLow931 Posted January 7, 2012 Report Share Posted January 7, 2012 i guess i thought the more port area the more output + the fact i calculated the port wrong. looks like surgery tomorrow. thanks guys From what Ive experienced myself, More port area = smaller range you can play(say your tuned to 35hz the more port area you have the smaller the range you can play above and below that), Less port area the larger the range you can play. 2008 Dodge Ram 2500 6.7l Cummins 4 FT1s C1600.2 8 PWX 8s ONX2.100 Audio Technix Wiring & Sound Deadener My Youtube Feedback Link to comment Share on other sites More sharing options...
bkolfo4 Posted January 7, 2012 Report Share Posted January 7, 2012 Bbut in his original input, he only had one port with one common wall. Even with no common wall, the port would have been 9.5 x 9.5 x 2.25 = .12 cuft, not .30 cuft Something is off there. Torres may want to investigate. It is not off by far, but like I said sometimes it is worse with L ports. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
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