Which will be louder, cleaner, deeper? Alpine type r 10 ported or 2 kicker cvt 12's shallow mount in a sealed box of. 77 cu. Ft. Per chamber when kicker recommend 1.0 cu. Ft. As minimum? For a 04 2500hd crew cab.
No idea about the specs adam as I was gonna get it custom made by a professional @ bill's boxes & electronics. Guy has a degree in electrical enginerring like you glass and fix electronics, builds boxes for a living. Anyway Glass you said the 2 12's in a sealed will be louder than a 10 ported. What about since kicker recommend at least 1.0 cu. ft. per speaker and if I can only do .77 which is .2 less, will it sound like crap, not hit deep, or what?
23% reduction in volume for a sealed box will make the box peaky and reduce it's power handling. You may not like the results. The dacron will only replace the effective volume by about 10%, still leaving you 13% shy of ideal.