The Denon Home 350 is a premium wireless speaker with HEOS multi-room support and voice assistant integration. This guide addresses connectivity and playback issues.
Speaker Not Connecting to WiFi
Symptoms
- LED shows connection error
- HEOS app can't find speaker
- Speaker not on network
Solutions
- Use HEOS app - Download HEOS app for initial setup, not Denon Home app.
- Network mode - Press and hold Connect button for 5 seconds for WiFi setup mode.
- 2.4GHz or 5GHz - Denon Home supports both bands. Try 2.4GHz if 5GHz fails.
- Factory reset - Hold Connect button for 10+ seconds to reset network settings.
- Same network - Phone and speaker must be on same WiFi network for discovery.
Voice Assistant Not Working
Symptoms
- Alexa doesn't respond
- Voice commands ignored
- Microphone appears off
Solutions
- Enable Alexa - In HEOS app, go to speaker settings and set up Alexa Built-in.
- Check microphone - Press mic button on top. LED indicates mic status (muted/unmuted).
- Link Amazon account - Complete Alexa setup by signing into your Amazon account.
- Update firmware - Voice features require current firmware. Update via HEOS app.
HEOS Multi-Room Issues
Symptoms
- Speakers won't group
- Audio out of sync
- One speaker drops from group
Solutions
- Same network - All HEOS speakers must be on the same WiFi network.
- Create groups - In HEOS app, tap and hold speaker, then select other speakers to group.
- Network stability - Multi-room requires stable network. Consider wired ethernet for main speaker.
- Update all - Ensure all HEOS speakers have same firmware version.
Audio Playback Issues
Symptoms
- Music cuts out
- Poor sound quality
- Streaming service won't play
Solutions
- Check streaming account - Verify streaming service is linked in HEOS app.
- Network bandwidth - High-res audio requires stable connection. Test with lower quality first.
- AirPlay 2 - For Apple devices, use AirPlay 2 for reliable streaming.
- Speaker placement - Keep 6 inches from walls for best bass response.