Okay I have a speaker box with two 12 inch JL woofers and two JL amps. One is 300/4 and the other is 500/1. When my husband traded his Expedition in he never hooked these back up to the new truck because the factory on the Navigator was loud enough and plus we got 3 babies in the backseat that don't need to hear all this! He is wanting $650 for everything....