May i know any good subwoofer to install in my preve? budget less than 1k.. active sub below seat is ok? not really basshead but after i install tis new morel maximo component, seems like bass become weaker but more detail, stock is muddy bass.. or if i wan install behind boot, any good recommendation? prefer a smaller and less hassle setup.. Pegasus brand ok? cos the shop help me install got pegasus, dls and dominations.. but dunno which good..