hey Cd i finally got my amp installed and running it to the sub ... as for the new speakers i installed in the front doors i notice the sound it alot crisp compared to the factory 2ohms ... as for the sub i wired each channel form the amp to each voice coil ... running in stereo i belive ... after a few weeks i have notice the speaker is ratling ... wondering if the 10 sub speaker is not getting enough power to it or should i wire from the amp to a single voice coil on the speaker?