looks like your amp is 2 ohm stable on the sub channel. like William said, that is not suprising since it probably uses a class D amp for the sub section. looks like your continuous power for the sub is around 150Wrms at 14.4V, so choose 4 ohm sub(s) that are rated to handle power in that range... (125Wrms - 200Wrms is a good range to work in...)

you're more than capable of running 2 subs off this amp. just make sure you buy subs that are rated for a 4 ohm load...
(if you choose to buy a DVC (dual voice coil) sub, you could probably get a 2 ohm DVC sub and wire the voice coils in series to get the sub to present a total 4 ohm load to the amp...)

best of luck w/ the system install...

i put (what i hope are) the final touches on mine this weekend... so once i borrow a dig. cam, i'll be posting some shots... with some luck, you'll find them helpful... best of luck and keep us updated!

 

Cool, thanks for the help with this. Can't wait to see your pix.

BTW -- I have been taking pix as I go so I will be able to do a full write-up.