8" sub setup question

[soomanynumbers]

alright, I'm thinking about getting these sub enclosures that fit in the side panels of my back seat. so basically it would be 1 8" sub on each side of my back seat facing eachother.
So I was looking at the 8" polk/momo MM2084 or MM2084DVC

Q's
Someone told me that facing 2 subs toward eachother is bad. is that true and why? (destructive interference?)

the sealed elcosures are .45cu ft, how will this effect preformance? (should be .35 cu ft)

If I were to power the dvc ones with the c300.2 bridged and in parallel will both subs see the 450 watts or does each one see half?

kinda confused, you guys have any ideas of how i should do this

thanks

[MacLeod]

1- Yes. Facing subs towards each other makes them cancel each other out.

2- A bigger enlcosure can make it boomier and maybe even muddier. Kind of like smaller ones will make them choked off and thin.

3- No, youll fry your amp. Hooking up 2 4 ohm voice coils in parallel to a stereo amp would present a 2 ohm mono load which the 300.2 is not rated for. If youre going to use the 300.2 youd need a SVC sub, and probably not the MM2084 as it only handles 200 watts.

[soomanynumbers]

if I put a bunch of poly fill in the box, would that help the box volume go down and make it sound better?

for the amp, if I ran a Alpine MRP-M350 which is rated at 200 watts RMS @ 4 ohms and wired the subs so that the coils are wired in series and the speakers wired in parallel, the subs will present a 4 ohm load. would that work? both subs would be getting the 200 watts RMS they need

thanks again for the help

[MacLeod]

Pollyfill makes the sub work as if it were in a BIGGER box. It does this by slowing down the wave which would be the same as if it were in a bigger box.

If thats the amp Im thinking of (The V Power line) thats a good amp. Capable of over 400 watts at 2 ohms.

If you ran the DVC sub in series that would present an 8 ohm load which would make the amp put out about 100 watts.

But the MM2084 is 200 watts PER COIL so that Alpine would be a perfect match for that sub.