Bridged 4 Channel Amp Wiring Diagram. If in series amp to 1st sub 1st sub to 2nd sub 2nd sub to amp you get 8 ohm load. Power across the 4 ohm subwoofer:
4 channels and 2 subwoofers are pointless if you want to use all 4 channels. Separate about a half inch of the edge and pull out the insulation. Look for the diagram near the speaker connects to see how yours is bridged.
