Quote Originally Posted by David View Post
also if your gonna put subs in for metal 10's sound better than 12's because they can handle the double base and keep it tighter and clearer sounding
I'm not trying to be a jerk but you're on the right path. Speaker design has a lot to do with the ability of a cone to recover in time to respond to the next note. Excursion also plays a role, as well as how the speaker is hung, magnets used, etc. Cone is only one small aspect of the speaker.

So here's the real question...was the speaker designed to be accurate or loud? THAT in itself will reveal possible characteristics the sub will maintain. Something designed for SPL isn't always what a SQ guy wants. However, in order to be loud the speaker must also be accurate mechanically. In this instance you run into some speakers that can be used in a hybrid install of sorts referred to as SQL.

Anyways...I've heard this is a great sub low profile sub...

FS: Exile XT10 NIB - DIY Mobile Audio

Here's an install for IASCA using them...

One more 350Z for the IASCA lanes - DIY Mobile Audio