Kenwood KSC-WA1001 sub

Greetings and Happy Holidaze,

I have a couple of questions about a powered sub-woofer I recently

(ahem) recieved as a gift.(Joker owed me 20 bux)

I have figured out that the yellow is main power and the blue is acc.

What I'm wondering about is, does this unit have 2 amps?

I see the yellow splits into 2 and it has 2 grounds,(black)

along with 2 more wires that seem to be for inputs.(Red stripe with

negative and blue stripe with negative)

I have an amp,(Jensen LXA 300 2 channel bridgeable) and 10 speakers to hook up.(4 ohm)

Can I attach 2 rear 6x9 three ways to the sub and bridge the rest out of the amp? The amp is MOSFET if that makes any difference.

Or, what would be my best way to make this work with what I have?

Thanks