boy i got some mixed up recommendations today from tru technology and image dynamics. jon (chief engineer) from tru told me to run 2 idq 15" in a ported enclosure designed by him-sub has to be between 28/32 imass? he said i would pound be able to keep up with the speed of metal. then the matt at image dynamics told to run 3 idq 15" in a sealed enclosure-said that the sealed enclosure would deffinently beable to keep up with metal. i dont know who to believe-tru makes the best amps and image dynamic makes some of the best sq subs. i know i'll probably be using the tru hammer mono. i would like to be able to run just 2 15" because it would be less of a hasle trying to find the right clean amp to push 3 15"s. i just heard today that i should go with 15" instaed of 12" or 10" for metal and rock-what do y'all think- thanx //content.invisioncic.com/y282845/emoticons/thumbsupwink.gif.129404938effda6ad9cca39e7f4b58a3.gif