I recently built my enclosure for two Boston G1's using what the Torres Calculator told me.
2.3 cu ft
two 4" ports 24.75" long. I had to go to these sized ports to the the port area into the port area range that Torres recommends.
Today I was modeling it in WinISD and Bass Box Pro and none of the numbers match on the ports.
2.3 Cu Ft
32 Hz Tune
Bass Box Pro says two ports 3" diameter by 13.26" long
WinISD says two ports 3" diameter by 13.91" long
Torres says two ports 3" diameter by 14.68" long, but the port area range is well below the recommended. So I assume that WinISD and BBP are below the acceptable range as well. I know the rule is 9" to 13" of port per sq ft of enclosure, so which one is right? I am wondering how far off my enclosure is now.
All rear port velocities are 35m/s and lower.
Vehicle: '99 F-150 Ext Cab / '98 Cavalier LS
Head Unit: Excelon KDC-X995 / KIV-BT900 w/HD
Subs: Fi Audio x12 / 2 JBL GTO 804's
Front Speakers: Massive CK6 / Massive Ck6x
Rear Speakers: Boston SL80 / Massive VX69
Amp:MBQ DSC4125, BRZ1700.1 / Massive NX5