Ok to start heres where im at:
2000 Audi A8
Blow through the rear deck
2 15in Incriminator Audio Death Penaltys D2
Powerbass XTA 5k @.5
Tenney 320 amp alt
2 Shuriken BT 120s
3.5 sealed separate chambers
Port is 20x6.5x7.5 tuned to 49?
Subs are firing in the direction from front and back of vehicle, port firing through rear deck going up.
So far my frequency range with this port is 32+ peaking at 38 148.3
Really lacks lows.
Ive added 3/4in internal port walls on the 6.5in sides. 2 layers on both sides making my port 17x6.5x7.5.
This gave me a little better lows and still a decent range (28+ now) but brought my score down a few 10ths.
My question is, is the reason my lows are horrible cause of my subs? Or my port? Or my enclosure?
What could I try to be able to play lows better and also make them forceful?
Any help would be great! Thank you.