Speaker Zones
You can group speakers in one area into a speaker zone. This enables you to control the audio level of the
zones individually. For example, you could make the audio quieter in the cabin and louder on deck.
You can connect one 4 Ohm speaker per channel of each zone. One zone can support no more than two 4 Ohm
speakers using the on-board amplifier. To use the RCA line outputs and the RCA subwoofer outputs, you must
connect an external amplifier.
You can set the balance, volume limit, tone, subwoofer level, subwoofer frequency, and name for each zone,
and configure other zone-specific settings.
Single-Zone System Wiring Example
Speakers
Water-tight connection
MS-RA210 Installation Instructions 9