1. Introduction
The Harman Kardon Omni 20+ is a premium wireless HD audio system designed to deliver high-fidelity sound throughout your home. Featuring built-in Chromecast, Bluetooth, and Wi-Fi connectivity, it allows for seamless streaming from various sources. This manual provides instructions for setting up, operating, and maintaining your Omni 20+ loudspeaker.
2. What's in the Box
- Harman Kardon Omni 20+ Wireless HD Stereo Speaker
- Quick-start Guide
- Regional Power Cord(s)
- Safety and Warranty Sheet
3. Product Overview
3.1 Front View

Figure 1: Front view of the Harman Kardon Omni 20+ speaker, showcasing its sleek design and Harman Kardon branding.
3.2 Top Panel Controls

Figure 2: Top panel of the Omni 20+ showing touch controls for power, volume, and playback.
- Power Button: Press to turn on/off.
- Volume Up (+): Increases audio volume.
- Volume Down (-): Decreases audio volume.
- Play/Pause Button: Controls media playback.
- Source/Link Button: Switches input source or links speakers.
3.3 Rear Panel Connections

Figure 3: Rear panel of the Omni 20+ displaying the power input, Audio In (Aux), WPS, and Reset buttons.
- Power Input: Connect the provided power cord.
- Audio In (Aux): 3.5mm jack for wired audio connection.
- WPS Button: For Wi-Fi Protected Setup.
- Reset Button: Resets the speaker to factory settings.
- Ethernet Port: For wired network connection.
4. Setup
4.1 Power Connection
- Connect the regional power cord to the power input on the rear of the speaker.
- Plug the power cord into a wall outlet. The speaker will power on automatically.
4.2 Wi-Fi Setup (Chromecast Built-in)
The Omni 20+ utilizes Chromecast built-in for Wi-Fi audio streaming and multi-room functionality. You will need the Google Home app for initial setup.
- Download and install the Google Home app on your smartphone or tablet.
- Ensure your mobile device is connected to the same Wi-Fi network you intend to use for the speaker.
- Open the Google Home app and follow the on-screen instructions to set up a new device. The app will detect your Omni 20+ speaker.
- Follow the prompts to connect the speaker to your Wi-Fi network.
4.3 Bluetooth Pairing
- Press the Source/Link button on the top panel until the Bluetooth indicator lights up.
- On your mobile device, navigate to Bluetooth settings and enable Bluetooth.
- Select "Harman Kardon Omni 20+" from the list of available devices to pair.
- Once paired, the Bluetooth indicator will become solid.
4.4 Aux-in Connection
For wired audio playback:
- Connect a 3.5mm audio cable (not included) from your audio source to the Audio In port on the rear of the speaker.
- Press the Source/Link button until the Aux-in indicator lights up.
5. Operating Instructions
5.1 Basic Playback
- Power On/Off: Press the power button on the top panel.
- Volume Control: Use the '+' and '-' buttons on the top panel or your connected device.
- Play/Pause: Press the Play/Pause button on the top panel.
- Source Selection: Press the Source/Link button to cycle through Wi-Fi, Bluetooth, and Aux-in inputs.
5.2 Using Chromecast Built-in
Once connected to Wi-Fi via the Google Home app, you can stream audio directly from Chromecast-enabled apps.
- Open a Chromecast-enabled audio app (e.g., Spotify, Google Play Music) on your mobile device.
- Tap the Cast icon (usually a rectangle with a Wi-Fi symbol) within the app.
- Select "Harman Kardon Omni 20+" from the list of available devices.
- The audio will now play through your Omni 20+ speaker.
5.3 Multi-room Audio and Stereo Pairing
If you have multiple Harman Kardon Omni speakers, you can group them for multi-room audio or pair two Omni 20+ speakers for a stereo experience using the Google Home app.
- Multi-room: In the Google Home app, create a speaker group and add your Omni speakers to play the same music across different rooms.
- Stereo Pairing: Within the Google Home app, select two Omni 20+ speakers and choose the option to create a stereo pair for a wider soundstage.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use liquid cleaners or aerosols.
- Placement: Place the speaker on a stable, flat surface. Avoid direct sunlight, heat sources, or areas with high humidity.
- Storage: If storing for an extended period, disconnect the power cord and store in a cool, dry place.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected or outlet not active. | Ensure power cord is securely connected and the outlet is functional. |
| No sound | Incorrect source selected, volume too low, or device not connected. | Verify the correct input source is selected. Increase volume. Re-pair Bluetooth or check Aux connection. |
| Cannot connect to Wi-Fi | Incorrect Wi-Fi password, speaker out of range, or network issue. | Ensure correct Wi-Fi password. Move speaker closer to router. Restart router and speaker. Use Google Home app for setup. |
| Bluetooth pairing fails | Speaker not in pairing mode, device already paired, or interference. | Ensure speaker is in Bluetooth pairing mode. Forget device on your phone and re-pair. Move closer to speaker. |
| Audio/Video sync issues (Bluetooth) | Bluetooth latency. | Bluetooth may introduce slight latency. For critical video synchronization, consider using a wired Aux connection or Wi-Fi streaming if supported by the video source. |
| Speaker unresponsive | Temporary software glitch. | Press and hold the Power button to restart. If unresponsive, disconnect power for 30 seconds and reconnect. As a last resort, perform a factory reset using the Reset button on the rear panel. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | Omni 20+ |
| Model Number | K951014 |
| Transducers | 2 x 75mm woofer, 2 x 19mm tweeter |
| Rated Power | 4 x 15W (Total 60 Watts) |
| Frequency Response | 53Hz - 20kHz |
| Signal-to-Noise Ratio | >80dB |
| Input Connections | Bluetooth, Aux-in (3.5mm), Wi-Fi, Ethernet |
| Wireless Communication | Bluetooth, Wi-Fi (Chromecast Built-in) |
| Control Method | Touch |
| Dimensions (L x W x H) | 16.6 x 16.4 x 26 cm |
| Item Weight | 2.32 kg |
| Power Source | AC |
| Color | Black |
9. Warranty and Support
The Harman Kardon Omni 20+ comes with a 1 Year Warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
For any assistance with your product, kindly contact Harman customer care:
- Customer Care Number: 18001020525
Refer to the included Safety and Warranty Sheet for detailed terms and conditions.