Box Dimensions: L:29", H:15.5", W:13"
Rectangle Port: L:11.5" W:3.4"
Amp just has a switch with setting: Low Pass/Flat/High. (Its set on Low Pass)
In Pre, I am not sure if its LPF, under Subwoofer setting; there is one option with 50/80/125. (Its set to 80)
How can I know about my basetube frequency tuning. No one in the market know about this. Do you know someone in Lahore who can make a custom box with this knowledge?

