OK, noted.
can you recommend a low mass/big motor sub driver?
thx
Well, the big motor MAY be a disadvantage for OB woofers. Big motor usually means lots of strength and control over the cone and this usually means a low QTS. What many recommend for easy OB solutions is high QTS. Basically it gets you a boost near the FS of the driver. Basically free EQ if you will. Personally, and this is just me, I would look for a nice woofer around .5-.7Qts and EQ to taste from there. Back when I was running my Maggies, I used a pair of MB Quart 12" subs per side. These were around .5 Qts, but are no longer made, so I will not give a link to something unobtanium.
Many folks like the Eminence Alpha 15 which has an even higher Qts. There are lots of projects listed on here with those drivers. There are others who feel that the Qts of these is too high and can affect the precision of the bass they reproduce. I am in this camp of belief. There WILL be loads of bass, but is it precise? From the fact that you are asking for light cone and large motor, I assume you are imagining nice tight, clean bass. Not sure you will be happy with the Alphas. What kind of SPL do you tend to listen at?
One of these per side might be nice:
http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-468They are known to have a pretty quite motor and a reasonable Qts and a nice low Fs. You could try one per side to start with.
This is also a nice choice:
http://www.parts-express.com/pe/showdetl.cfm?partnumber=264-1118Greg