I'm looking at getting the SW7100 series Aluminum 12", but I noticed the SW7300 series has almost the same specs. The only real difference between the 7100's and the 7300's is that the 7300's have a larger vas. I know vas has to do with the suspension, but what's the difference between these subs? Which is better?
I have the eclipse SW7124DVC T-2 and its very loud i think it is better than the 7300s but yea they are great subwoofers get them off www.woofersetc.com for 209.99 for the SW7124DVC T-2's they are good SQ/SPL subs, go ported with them also they sound great ported.
Vas is the equivalent suspension compliance of the subwoofer, meaning that if a sub has a Vas of 2 cu ft, then the suspension provides the amount of pressure that 2 cu ft of air would. It has more to do with choosing the right enclosure than it does the SPL of the sub. You'll need to know other factors as well, more magnet doesn't necessarily mean a better sub, huge magnets can tend to overdampen the driver if they are too strong for the sub they're powering, it can result in a boomy sound.