Adding two speakers to tower bar

[Larry Arizona]

The Supra FX one towers are partially wired for second set of speakers and the wires are not run to the factory amp and you likely need a bigger amp to drive 4 JL 8.8 towers.

The wiring runs down the port side of boat and can be reached from inside the doghouse.

When you find the speaker connectors in the doghouse area, you will need to run two more sets of wires from those connectors to the amp.

My guess is you have a 400/4 amp running your two tower speakers and will need either another 400/4 or change to an 800/8 to add the new set of speakers.

This was true on a 2018, not sure about the 2020 amps


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