k3n12ock Posted May 22, 2009 Author Report Share Posted May 22, 2009 Thanks. Should the port/subs be facing the back of the trunk or towards the back seat? Quote 05 xB - (2) EVIL 18s - (2) BC3500s - NO WALL Channel 1: http://www.youtube.com/k3n12ock Channel 2: http://www.youtube.com/MrK3n12ock2 Link to comment Share on other sites More sharing options...
Joker Posted May 22, 2009 Report Share Posted May 22, 2009 For (2) 12"s I would shoot for more around 4 cubic foot net internal volume at the minimum (with all displacements taken into account) . Also them boxes you fellas are coming up with dont have very much port area . Not even in the 12-16sq in rule of thumb area . Last thing I notice is the 3" width port being 2x" in length to get your tune is jacking up the Port Length to Port Width ratio . Rule of thumb is to go no higher than what .. 9:1 , I like to stay under 7:1 myself . Yours is around 8.5:1 . Cliff : Not enough internal volume , not enough port area , port width too narrow . Try this 33" W 18" H 23" D 4.5" W port 0 on the second port in that re calculator = plenty of internal volume , plenty of port area , plenty of port with a 5.61:1 ratio . Even though its tuned a bit higher itll smash them little boxes you fellas where figuring up . With both subs in the box the net volume would be about 5cuft tuned to right under 35Hz . Quote 2000 Trans Am ws6 - 6spd / M9 / cam / full bolt-ons / semi full suspension / tune 1998 Integra - daily beater, [2] AB XFL-1244's / 4ft³@35Hz, 61in² / Saz-3500dv1 @.85Ω Link to comment Share on other sites More sharing options...
k3n12ock Posted May 22, 2009 Author Report Share Posted May 22, 2009 For (2) 12"s I would shoot for more around 4 cubic foot net internal volume at the minimum (with all displacements taken into account) . Also them boxes you fellas are coming up with dont have very much port area . Not even in the 12-16sq in rule of thumb area . Last thing I notice is the 3" width port being 2x" in length to get your tune is jacking up the Port Length to Port Width ratio . Rule of thumb is to go no higher than what .. 9:1 , I like to stay under 7:1 myself . Yours is around 8.5:1 . Cliff : Not enough internal volume , not enough port area , port width too narrow . Try this 33" W 18" H 23" D 4.5" W port 0 on the second port in that re calculator = plenty of internal volume , plenty of port area , plenty of port with a 5.61:1 ratio . Even though its tuned a bit higher itll smash them little boxes you fellas where figuring up . With both subs in the box the net volume would be about 5cuft tuned to right under 35Hz . Not sure if it'll fit my trunk with that height in the space I want it to go. Quote 05 xB - (2) EVIL 18s - (2) BC3500s - NO WALL Channel 1: http://www.youtube.com/k3n12ock Channel 2: http://www.youtube.com/MrK3n12ock2 Link to comment Share on other sites More sharing options...
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