Re: port placement?
What kind of vehicle is it going in? That's not going to be enough port... It's better to do fewer, larger diameter ports too. A single 8" flare would do much better.
Follow the basic rule of thumb regardless of what WinISD says. 12-16 square inches of port per cubic foot of box volume.
2007 Honda Pilot 2008 Nissan Maxima
2 RD D9s strapped @ 1 ohm Sundown SAZ-1500D V.3
2 Sundown Nightshade V.2s 2 10" Atomic APX
Sundown SAX-125.2 x 2 Sundown SAX-100.4
Sundown NeoPro 6.5"s, JL ZR Tweets Sundown NeoPros
RIP Taylor aka NewAgeKing, you are missed!