15 vs 18 3cuft vs 5.5cuft

[ShaneSauce 2]

I really want a 18, extremely bad but I have been lead away from it due to trunk space.

My question is, if I put a SSD 18 in a 5.5 cuft box how would it sound compared to a SSD 15 in a 3cuft box.

I wouldn't have a problem fitting the 15 in but the 18 would be a snug fit, but its much more appealing.

[RobClay 20]

id say go with the 15, with an optimum enclosure for it. since you wont have enough space for the recommended enclosure for an 18

[akjay907 0]

Sealed, right?

[ShaneSauce 2]

Sealed, right?

5.5 ported

[RobClay 20]

5.5 ported

net volume, and with or without port displacment?

[ShaneSauce 2]

5.5 ported

net volume, and with or without port displacment?

5.5 after sub and port displacement

[ShaneSauce 2]

oops, double post

Edited December 7, 2008 by ShaneSauce

[RobClay 20]

sq inches of port?

[ShaneSauce 2]

sq inches of port?

Around 75-80 square inches of port, tuned at 31-32hz

13-14 square inches of port per cube.

[christobear 0]

i would like to hear some opinions as well, im working with about 7 after port/displacement for an 18" (12^2 inches per foot of port)

or optimal for a 15" (16^2 per foot of port)

help!!!! i really dont knowww!!!

[ShaneSauce 2]

i would like to hear some opinions as well, im working with about 7 after port/displacement for an 18" (12^2 inches per foot of port)

or optimal for a 15" (16^2 per foot of port)

help!!!! i really dont knowww!!!

Well the only reason I ask is because Fi doesn't recommend going under 6 cubes for the 18" SSD.

But going 5.5 cubes and giving it enough port area shouldn't hurt it.

[KU40 173]

It will give you a more peaky response in that small of an enclosure, even if you tune low. If you go ahead with it, definitely add polyfill to the enclosure to help it out.