help with ported enclosure for two ID8's

[BIG-SMOOTH 10+ year member]

I have two image dynamics ID8 subs going behind the seats in a standard cab silverado. If someone could confirm my measurements that would be great.

H- 14"

W- 34"

D1- 7.5"

D2- 6.5"

I will be using a single 3"x10.58" aeroport

I'm shooting for 1.29^ft (including .08^ft of driver displacement with 34hz tuning)

Got a few questions...

#1- Should I be calculating the port length with or without the driver displacement?

#2- Is a single 3" port large enough for a pair of 8's?

#3- How do I figure out the displacement of the port tube?

#4- The subs will be placed on the left side of the box facing forward and the ports will be on the opposite end of the box facing towards the roof. Will this cause any issues?

Click to read more...