Fusion® Apollo RA770 Quick Guide
This guide explains day-to-day operation of your Fusion Apollo RA770 marine-grade head unit as installed in Rhinomax Vantage Edition models. It covers basic controls, Bluetooth pairing, zone management, power behaviour and essential troubleshooting. For advanced settings, wiring diagrams and network configuration, download the full Garmin/Fusion manual below.
⚙️ Basic Operation (Rhinomax Edition)
The RA770 is a premium, multi-zone, marine-grade stereo designed for harsh environments and simple use in your camper.
Main Controls
The RA770 uses a combination of touch-screen and soft-touch buttons:
- Power: Hold the standby/power button.
- Volume: Adjust by zone or master volume.
- Source Selection: Choose from Bluetooth, USB, Radio, AUX, PartyBus™, or Wi-Fi sources.
- Home button: Returns to main menu at any time.
Rhinomax installs speakers and zones pre-configured for easy use.
Bluetooth Pairing
To pair a new phone or device:
- Tap Bluetooth on the home screen.
- Select Pair New Device.
- Choose Apollo RA770 on your phone.
- Confirm the pairing request.
Tip: If the old device autoconnects, remove it from the Bluetooth list first.
Multi-Zone Audio
The Vantage Edition uses multiple audio zones:
- Zone 1 — Internal cabin speakers
- Zone 2 — External kitchen speakers
- Zone 3/4 — Optional sub or additional speakers
Adjust volume, tone, balance and limiters for each zone individually.
Power Behaviour
The RA770 is integrated with your 12V power system:
- Turns off when 12V master switch is off.
- Retains all settings when powered back up.
- High-power amplifier mode available depending on configuration.
If the unit loses presets or resets often, battery voltage may be low.
🎚 Audio Settings & Zone Management
Optimise sound across your camper’s interior and exterior zones.
Zone Controls
Each zone can be independently controlled:
- Volume (normal listening)
- Tone (bass/treble)
- Balance (left/right)
- Sub level if equipped
Zone isolation prevents disturbing other areas of the camper.
PartyBus™ Multi-Zone Link
The RA770 supports Fusion’s PartyBus network:
- Share audio to compatible devices.
- Play different sources in different zones.
- Sync volume across devices.
Most Rhinomax builds use the RA770 as a standalone unit, but PartyBus is enabled.
Source Options
Supported audio sources include:
- Bluetooth
- AM/FM Radio
- USB Music
- AUX input
- Wi-Fi / AirPlay 2
Apple AirPlay 2 allows multi-speaker streaming with compatible devices.
Troubleshooting Audio Issues
If a zone is silent:
- Check volume limiters.
- Confirm source is active.
- Ensure balance isn't fully left/right.
- Verify Bluetooth device is playing.
External kitchen zone may mute if master volume is set low.
🔧 Troubleshooting
Quick fixes before assuming hardware faults.
No Power
- Check 12V master system switch.
- Verify fuse or breaker is intact.
- Confirm house batteries are above 11.5V.
- Check rear connector harness for movement.
No Bluetooth Audio
- Forget & re-pair your device.
- Ensure only one phone is connected.
- Switch source to Bluetooth.
- Restart RA770 if audio stalls.
One Zone Not Working
- Verify zone volume isn't muted or limited.
- Check balance settings.
- Confirm wiring hasn't been disturbed (service inspection).
Distortion or Weak Sound
- Lower source volume (especially Bluetooth).
- Check EQ settings for clipping.
- Ensure speakers are not water-logged or obstructed.
🛠️ Preventative Maintenance – RA770
Simple steps to keep your audio system performing at its best.
Speaker Care
Inspect marine speakers occasionally for dust, spider webs or sand. Avoid high-pressure water around speaker cones.
Connections & Wiring
Ensure terminals, fuses and connectors remain tight and dry. If sound drops out intermittently, have wiring inspected.
Software & App Updates
Use the Fusion-Link or Garmin app to update firmware. Updates improve Bluetooth stability and audio quality.