mylows10 5,000+ posts
B2,singer,ampere rep
hey rob its jim call me man rusty was trying to get a hold of me today but was workingI know i'm biased but the lvl 3 is a great sub both in sound quality(sealed or ported), and just getting down right smooth deep bass.
Box will be no where near 5 cu. They like 1.5cu ea with approximately 16sqin of port depending on whether or not your ground pounding or 18-24sqin for burps.