guys may nakita ako sa Concorde na subwoofer with built-in amp, i'm thinking of buying it kasi pwede sya ilagay sa ilalim ng driver seat so it won't eat up too much space. pwede rin ba gamitin yung amp nito para sa ibang speaker. i guess its a 2-ch amp kasi meron syang ch1 at ch2 input? para san ba yun. newbie lang sa car audio stuffs.. tia