never mind its not loud as you want cause its only 250 watts RMS

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02 GRAND CARAVAN SPORT

SPEAKERS: -6 1/2" component from energy still to come concidering alternatives
-2x Massive audio CW12 in 4.2cf dual chamber square ported at ~35hz

Amps: -DD SS1
-KAC-745

Upgrades: -160 amp alt. maybe
-4 gauge wiring (done)
-0 gauge BIG 3 (done)
-sound deadning the shit out of the van somewhat not done yet
?????????

and your amp only pushes 150x2 at 4 ohm or 430x1 at 4ohm i dont know if you have 2 subs or just one but either way they are starving... unless you only have one sub bridged having 430watts rms into a sub that only handles 250watt rms ... could fry the poor thing if not setup right

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02 GRAND CARAVAN SPORT

SPEAKERS: -6 1/2" component from energy still to come concidering alternatives
-2x Massive audio CW12 in 4.2cf dual chamber square ported at ~35hz

Amps: -DD SS1
-KAC-745

Upgrades: -160 amp alt. maybe
-4 gauge wiring (done)
-0 gauge BIG 3 (done)
-sound deadning the shit out of the van somewhat not done yet
?????????

from the first post I would of thought the amp isn't sufficient enough for what he's expecting.

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spectra5
Kenwood excelon x201t
Kenwood KFC-W3085
jvc KD-G430

I would make sure you have everything hooked up properly to your deck, as in using the sub out and that all the settings for sub output level (if you have it) is proper.

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I love the smell of fiberglass in the morning!!

'07 Jeep Grand Cherokee Laredo
-1x MTX 9500 12"
-1x Alpine PDX 1.1000
-1x Pioneer DEH-P7800MP
-100 Sq Ft B-Quiet Ultimate

'00 Civic
-2x Alpine Type X 10"
-1x MTX TA81001
-1x Pioneer DEH-P6800MP
-100 Sq Ft B-Quiet Ultimate

Try setting your amp gain at half, and lowpass crossover at 80hz. These knobs should be on the amp side. You can try jacking the gain higher and see what happens. And on your deck, adjust subwoofer output to maximum possible setting. Make sure speaker wire is red to red and white/black to white/black.

There is way to much stuff you need to learn. You don't even know what crossovers are... You don't expect people here to walk you through every step, do you? This will help.

http://www.installdr.com/
http://www.bcae1.com/

Post pictures of everything - power wire, connection to the battery, interconnects hooked up, everything.

Then we can start giving you suggestions.

It might be the install, the equipment, the enclosure, could be a *ton* of stuff.

Start posting pictures and we'll help.

it's not always as easy as you think. There's a lot to learn about car audio before you actually know what you're doing. Go to this site and start reading.

Basic Car Audio Electronics

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2004 300M SPECIAL
Alpine CDA 9833
Alpine Pxa-h701
Alpine Rux-c701
Rockford fosgate p400-4
Rockford fosgate p4004
Hifonics BX 1205D
JBL c608 GTi
JBL p693
Infinity 2.5" center channel
Alpine type R 12"(2)
all active SQL set up with 1900 watts rms

alright guys ill start reading up on some shit and get back to u. and u guys dont need to be dicks.."dont no wat crossovers are" ur basically saying im a fckin idiot..im 16, and im just gettin into this stuff like give me a break man. but yea ill read up on some stuff.

^^^ You need a lot more help than car audio...