I'm in the works of finishing up my sound system. I have Polk DB462 in the front, Polk DB522 in the sound bar, both have polyfill stuffing in place. I have this Kenwood head unit, and am looking to put an 8" Kicker comp Sub in my ammo can center console. I am not sure how subwoofers work or amplifiers work, will this Kicker 42PXA2001 work well with the sub? and does anyone know if I can use that amp to power my other 4 speakers as well? Or would I need separate amps. Please give me recommendations too since I have no experience with any subs/amps.