How to Wire Three Subwoofers to a Mono Amplifier
- 1). Flip all three subwoofers cone-down, exposing their magnets and terminals. Locate the speaker wire output terminals on the amplifier.
- 2). Cut a piece of speaker wire, sufficient to reach from the subwoofer closest to the amplifier. Strip off one inch of insulation from the speaker wire. Insert the bare wire into the positive and negative amplifier speaker wire terminals. Tighten them securely, using the appropriate screwdriver.
- 3). Loosen the binding posts terminals on all three subwoofers, exposing the holes on the posts. Cut additional wires to reach from the subwoofer closest to the amp. Cut an equal length, sufficient to reach from the first sub to the second, then from the second to the third.
- 4). Strip one inch of insulation from the ends of each lead of speaker wire. Separate all the speaker wire leads by pulling them, creating two separate pieces of wire from one. There will now be six individual wire leads.
- 5). Run the wire from the amplifier to the first subwoofer. Insert the wire into the exposed positive binding post hole. Insert the positive wire leading to the second subwoofer from the first woofer into the binding post hole, next to the speaker wire from the amp. Tighten down the binding post nut to secure the two wires. Repeat this process for the negative terminals.
- 6). Insert the wire leading to the third sub into the binding posts on the second. Insert the bare wires leading from the second sub to the third into the third sub's binding posts. Tighten down all post nuts on the second and third subwoofers to secure.
Source...