Ok, before people start feeding you a line of bull**** about 10's being
better than 12's for "SQ", or 10's responding "faster", or 12's giving you
deeper bass, or whatever nonsense people like to spout, you should first
take into account the amount of trunk space that you're willing to
sacrifice. Or, even more importantly, pick out the exact location you
want the sub to go. Then, measure the airspace of the enclosure you can
build there. Use that information to make the determination what size sub
to use.

And I agree with Tony that there's no reason at all to go with two subs
over one. Back in the day, it was often necessary if you wanted greater
power handling because they didn't make these giganto-subs that they make
today. These days, you can buy a single sub that will handle a kilowatt.
If you need more than a kilowatt to get the kind of bass you're after,
then you're doing something wrong.

So your sub choice should be based almost entirely on how much power you
want to drive it with and the amount of airspace you have to work with.

Frankly, you'll make a bigger difference in the sound by changing the size
of the box, the positioning in the trunk, and the crossover/phase settings
than choosing the "SQ sub" vs. the whatever-else sub. You can experiment
with all these parameters. Some people who are really serious will first
build an oversized test box, try it at different box volumes by literally
adding hunks of wood inside. Others use software to model the frequency
response of the driver at different box volumes (this is a good starting
point, but problematic for other reasons). And others buy the sub based
on box volume rather than choosing the box volume based on the sub.

The positioning in the trunk makes a MAJOR difference in the sound. See
www.installer.com/tech/aiming.html (I think that's the right URL).
Generally, although this isn't always true, you want the cone to be as far
to the rear of the vehicle as possible. A perfect location, then, in many
cars is the spot behind the wheel well.

Electrically, make sure you use a good amp with plenty of power and
built-in adjustable crossovers (unless your crossover is in your HU or an
outboard processor). Also try reversing the leads, putting the sub "out
of phase" electrically with the rest of the system. The reason this is
sometimes beneficial is because it doesn't really put it out of phase
with the rest of the system, since there are so many phase variables
elsewhere.

Good luck.


On Wed, 24 Aug 2005 wrote:

I listen to all types of music ... just want it to sound great ... more
of an alround kinda thing

thanks ...

I was reading reviews and the reviews of the jl 12w6v2 seems to be
great SQ speaker, that is y i was considering it ... but i like the
idea of 2 10's ... pity i cant afford 2 10w6v2 ...

thanks again