so i have my SX 12 wired parallel and it wont move and i have rewired everything 2 times and the amp light does turn on and stuff but when i touch the wires theres no spark so theres a warrenty on it so i am thinking about sending it back for another one but i was wondering if theres a difference between SERIES WIRING and PARALLEL WIRING or should my sub be still hitting like crazy? thanks