View Full Version : Best FI BTL Port Frequency?

05-01-2009, 11:13 PM
A Yes Im wanting to know what the best port size and frequency would be best for a 18 INch FI BTL, i know they shine at low frequencys but what about higher ones like 38HZ?

05-01-2009, 11:18 PM
What are you looking to get out of it?...

05-01-2009, 11:32 PM
what is the best feq for your vehicle have you tested it yet???

05-02-2009, 12:34 AM
well i dont have the sub yet, im just tryin to decide if i want a FI 18 and im trying to decide if i want it higher sounding, im usally wanting low but i think i may try a SQ setup, still lower but also has good highs, I have a Chevy EX-Cab silverado