yes it can
low voltage=amp working harder that = cliping
ur playing 2 low for ur box (not a main reason for the heat)and cliping (one of the main reasons)
use ur dmm and see how ur voltage is when u play ur system any thing under 11.x-and down is will be cliping the sub 2 hell
just a lil info for u
edit: and ur not geting the full "1500 watts" after voltage drop and imp. rise