Skip to main content

Speaker Zone Settings

Disabling the Internal Amplifier

If you do not connect speakers directly to zones 1 and 2, you can disable the internal amplifier to reduce power consumption.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select INTERNAL AMP ON to clear the check box.

Setting the Home Zone

The home zone is the speaker zone that you adjust by default when you turn the dial.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE > ASSIGN HOME ZONE.
  3. Select a zone.

Synchronizing the Source and Zone Volume Levels

You can synchronize the volume levels on one or all zones with some source devices, such as a Bluetooth®, AirPlay®, or ARC source.

  1. Select Menu symbol > SETTINGS.
  2. SelectZONE.
  3. Select an option:

    • To synchronize the volume with a Bluetooth or AirPlay source device, select PHONE VOLUME SYNC.

    • To synchronize the volume with an ARC source device, select HDMI VOLUME SYNC.

  4. Select a zone or ALL.

When you adjust the volume on the connected source, the volume on the selected zone is also adjusted.

Adjusting the Power-On Volume Limit

By default, when you turn on the stereo, the system automatically reduces the volume to level 12 if it was louder than that when you turned it off. You can adjust this limit if you want to retain a louder volume or limit to a lower volume when you turn on the stereo.

NOTE: This setting affects all zones on the stereo.
  1. Select Menu symbol > SETTINGS.
  2. Select ZONE > POWER ON VOLUME LIMIT.
  3. Adjust the volume limit.

Maintaining Individual Zone Volume Levels

If you adjust the volume levels of individual zones so that some zones are louder than others, the individual zone volume settings are all affected when you adjust the volume for ALL zones. By default, if you adjust the volume for ALL to 00, this sets of the volume levels for all zones to 00 and resets all individual zone volume adjustments. You can enable the KEEP VOLUME RATIOS option to retain individual zone volume adjustments when you adjust the volume for ALL to 00.

NOTE: This setting applies to volume adjustments on the stereo or a connected ERX remote control only. If you adjust the volume on the stereo using a connected chartplotter or NRX remote control, the volume levels will still be reset.
TIP: For the best results when enabling this setting, you should set the power-on volume limit to 24 (Adjusting the Power-On Volume Limit).
  1. Select Menu symbol > SETTINGS.
  2. Select ZONE > KEEP VOLUME RATIOS.

Enabling Automatic Volume Adjustment Based on Speed

  1. Select Menu symbol > SETTINGS > ZONE > SPEED VS VOLUME > ENABLED.
  2. If needed, update the settings to select the speed source (Automatic Volume Control Settings).

Automatic Volume Control Settings

Select Menu symbol > SETTINGS > ZONE > SPEED VS VOLUME.

ENABLED

Enables the automatic volume control feature.

SPEED SOURCE

Sets the source that the stereo uses to determine the speed (Speed Source Information).

MAX/MIN SPEED

Sets the expected maximum and minimum speed range for the selected SPEED SOURCE. The MIN setting indicates the speed at which the volume plays at the level you set by turning the dial. The MAX setting indicates the speed at which the volume plays at the highest level set in the VOLUME INCREASE setting.

TIP: You should start by setting these values at the speeds you typically expect from your engine or sensor and adjust them as needed.
VOLUME INCREASE

Sets the total volume increase for each zone when the selected SPEED SOURCE reaches the set maximum speed set in the MAX/MIN SPEED setting. The higher you set this level, the louder the volume will be as you approach the set maximum speed.

NOTE: When the volume increases to adjust for speed, the actual volume output changes but the volume-level indicator bar and number stays the same.
CUSTOM UNITS

Changes the measurement unit used to indicate the vessel or wind speed.

Speed Source Information

Select Menu symbol > SETTINGS > ZONE > SPEED VS VOLUME > SPEED SOURCE.

ENGINE SPEED

Uses the RPM reading provided by a supported NMEA 2000® engine. The volume increases as the engine RPM increases from the set MIN speed to the set MAX speed. If multiple supported engines are connected, the stereo uses the average RPM reading from all engines.

SPEED OVER GROUND

Uses the speed over ground (SOG) reading provided by a supported NMEA 2000 GPS antenna or chartplotter with an internal GPS antenna. The volume increases as the SOG increases from the set MIN speed to the set MAX speed.

SPEED THROUGH WATER

Uses the speed through water (STW) reading provided by a supported NMEA 2000 water-speed sensor. The volume increases as the STW increases from the set MIN speed to the set MAX speed.

WIND SPEED

Uses the wind speed reading provided by a supported NMEA 2000 wind-speed sensor. The volume increases as the wind speed increases from the set MIN speed to the set MAX speed.

Disabling a Zone

You can disable an unused zone and remove it from the audio level pages. When a zone is disabled, you cannot change any of the settings for that zone. You cannot disable zone 1.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select a zone.
  4. Select ZONE ENABLED to clear the check box.

Setting a Zone Name

You can set a name for a speaker zone to make it easier to identify.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select a zone.
  4. Select ZONE NAME, and select an option:

    • Select a pre-defined name from the list.

    • Select CUSTOM NAME, and enter a unique name for the zone.

Linking Zones

You can link zones 1 and 2 to keep the volume levels synchronized. Adjusting the volume of either of the linked zones affects both zones.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE > ZONE 2 > LINK TO ZONE 1.
NOTE: After zones 1 and 2 are linked, you cannot adjust the volume of each zone individually.

Enabling Volume Control of Zone 3 or 4 from a Connected Amplifier

By default the volume of zones 3 and 4 are controlled by the stereo. You can control the volume of these zones using the connected amplifier instead.

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select zone 3 or zone 4.
  4. Select VOLUME CONTROL to clear the check box.

The audio signal from the zone is provided to the amplifier as a fixed-line-level output at maximum volume.

Adjusting the Subwoofer Filter

You can use the subwoofer filter setting to control the subwoofer cutoff frequency for each zone, which can enhance the blend of the sound produced by the speakers and the subwoofer. Audio signals above the selected frequency are not passed to the subwoofer.

NOTE: If a DSP setting has been applied to the zone using the Fusion® Audio app, this setting cannot be changed on the stereo.
  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select a zone.
  4. Select SUB. FREQ..
  5. Select a frequency.

Adjusting Additional Audio Settings for a Zone

  1. Select Menu symbol > SETTINGS.
  2. Select ZONE.
  3. Select a zone.
  4. Select one or more options:

    • To limit the maximum volume output of this zone, select VOLUME LIMIT, and adjust the level.

    • To adjust the right and left speaker balance of this zone, select BALANCE, and adjust the balance.

    • To reduce the power output to the external amplifier associated with this zone, select EXT. AMP GAIN, and adjust the gain level.

    • To reduce the power output to the internal amplifier associated with this zone, select INT. AMP GAIN, and adjust the gain level.

      NOTE: This setting is available only for zones associated with an internal amplifier, typically zones 1 and 2.

    • To change the output of this zone from stereo to mono, select MONO.

      NOTE: The mono setting is useful if a listening position is closer to one speaker than the other and predominantly hear only that channel. The mono setting combines both channels in each speaker in the zone.
GUID-2BF6BEB7-4CE7-4804-9935-F0D912E72FA7 v5
August 2026
© 2025 Garmin Ltd.