lord baccus 10+ year member
Member
i measured from the subs to where the mic go's and got 7'
give or take an inch.
so 7'x4=28' gives me the 1/4 wave
devide 1131 the speed of sound by 28'= 40.39Hz
so i port to 30.39Hz - with cabin gain should peek @ 40.39Hz
but what about the ports fireing 90degrees out of faze, ???
subs are pointed forward into the back of the seat & the ports are fireing up along the back window line.
i drive a 1988' Ford F-150 x-cab
give or take an inch.
so 7'x4=28' gives me the 1/4 wave
devide 1131 the speed of sound by 28'= 40.39Hz
so i port to 30.39Hz - with cabin gain should peek @ 40.39Hz
but what about the ports fireing 90degrees out of faze, ???
subs are pointed forward into the back of the seat & the ports are fireing up along the back window line.
i drive a 1988' Ford F-150 x-cab