Fi Q 15" 6" aero port build questions

[Ace87]

I'm about to start building an enclosure for a 15" Fi Q d2 and I'm using a full length 6" (17-18" long) Aero port kit from parts express. Which would work better? 3.0 net@33hz or 4.0 net @29hz, or somewhere in between? It will be run off a Sundown saz-1500v2 @ 1ohm. Half of the music I listen to is rebassed-slowed, and this is a daily driver. I'm also wondering, has anyone ever done any testing on which works better in a trunk, a driver side firing aero port, or middle of the trunk firing aero port towards trunk lid/license plate? Port will be run all external. This will be in the trunk of a Buick. Any input is appreciated guys, thanks.

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[jRi0T68]

My previous box for my Q15 D2 was 3.9 ft³ tuned to 32, but with two 6" aero ports. Originally had it on two 4" aeros, and definitely got louder going up to 6s. Honestly, I'd give it 4 ft³, and see if you can go up to a single 8 or two 6" ports.

Mine is in a 6th now and is just all around better for it.