hatchback box sub up port back ALWAYS NEVER failed me
stick with a good amount of port area ( 13 to 15" per cube is ideal) take the total port area and divide that by volume and u get the "inches per cube" adjust port size accordingly
2.5 net and 32hz is a good start like i said use a good amount of port area
and double up the baffle where sub will be
2000 Gmc Sonoma ext cab
subs- 4 Skar audio ix8s 2cube net at 28hz 6" aero
amps- Audio Technix 400.1 & infinity 7520a
highs- 3 sets of Scosche hd 6.5"
headunit- fancy DUAL audio xdma760
sound deadend with peel n seal and expanda foam
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