I have a sealed box in my 4 door blazer firing towards the tailgate...would it make that much difference using a downfireing box or should i just let it go...im using JL 12w3's D4's (discontinued) and lanzar vibe amp (300 watts rms x 2)
You can always take your current sealed box and turn it into a temporary downfire, such as sitting the box on some books or something similar. If you like the results, go for it.