thanks for the info i am more of sql
atomic reccomends 3.5ft3 2(4” ports x 16 ¼” long) (34Hz) F3=40Hz 1000w
for Quantum series witch is close to my sub so i might try 2 4 inch ports.
I think i am fine for now but my port is 2 big its almost free air but still puts out good clear hard hitting bass without any port noise it just takes more power.
I just want to maximize best sq and loudness
i will one day purchase Dayton Audio WT3 Woofer Tester and have some fun
peace