extended cab sub/port position

[sanguine79]

I know this has been discussed many times but here it goes again. I gave a 98 k1500 with a 18" HCCA PSI sub in a box that's 8.75 cubes tuned at 32Hz. Im pulling the back seat out tomorrow. Now I can't decide. Sub up and port forward at the bottom of the seats or sub forward port up? Will it make that much difference? I just don't want to kill any sound by doing port under. It would fit more snug sub up which I like the idea of better. Less could damage the sub that way. Anyway, thanks for reading.

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[mylows10 5,000+ posts]

Sub up port up will be the loudest. For daily music. Subs up port middle

 

[bgowdy 5,000+ posts]

sub up, port to side has been the loudest the ive seen

 

[sanguine79]

Well actually I don't wanna change my box so I only have 2 options. Sub up, port forward or sub forward port up

 

[bgowdy 5,000+ posts]

Well actually I don't wanna change my box so I only have 2 options. Sub up, port forward or sub forward port up

id go sub up port forward then

 

[sanguine79]

Aight yea that's what I'm kinda thinking. Open to all opinions

 

[FISHKILLER 10+ year member]

How did it turn out? About to build a new box for my ultras and thinking sub and port up.

 

[sanguine79]

Whoops never saw your reply. Didnt care for sub forward port up very much. I was good but the box didn't fit well. I'm doing port rear sub up right now. I like it pretty good. I may try port forward. Dunno yet