1. Introduction
This manual provides essential instructions for the safe and efficient use of your Onkyo TX-SR373 5.2 Channel Full 4K Bluetooth AV Home Theater Receiver and the accompanying Yamaha High-Performance Natural Surround Sound 2-Way Indoor/Outdoor Weatherproof Speaker System. Please read this manual thoroughly before operating the system and retain it for future reference.
The Onkyo TX-SR373 receiver delivers 5.2 channels of audio with 4K Ultra HD and 3D pass-through capabilities, integrated Bluetooth connectivity, and multiple input options. The Yamaha speakers are designed for versatile indoor and outdoor use, providing clear and natural sound reproduction.
Image 1.1: Onkyo TX-SR373 AV Receiver and Yamaha 2-Way Indoor/Outdoor Speaker System.
2. Safety Information
To ensure safe operation and prevent damage, observe the following precautions:
- Do not expose the receiver or speakers to rain or moisture to prevent fire or electric shock.
- Do not block ventilation openings. Ensure adequate space around the unit for proper airflow.
- Do not place the unit near heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
- Use only attachments/accessories specified by the manufacturer.
- Unplug the unit during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel.
3. Package Contents
Verify that all items are present in the package:
- Onkyo TX-SR373 5.2 Channel AV Receiver
- Yamaha High-Performance Natural Surround Sound 2-Way Indoor/Outdoor Weatherproof Speakers (Pair)
- Speaker Wire (100ft CubeCable High Speed Speaker Wire)
- Remote Control (not explicitly listed but standard for AV receivers)
- FM/AM Antennas (not explicitly listed but standard for AV receivers)
4. Setup
4.1 Receiver Placement
Place the Onkyo TX-SR373 receiver on a stable, level surface with adequate ventilation. Avoid placing it directly on top of other heat-generating components.
4.2 Speaker Placement
The Yamaha 2-Way speakers are designed for flexible placement, suitable for both indoor and outdoor environments. They can be mounted vertically or horizontally using the included wall mounting brackets. For optimal sound, position the speakers to create an equilateral triangle with your primary listening position.
4.3 Connecting the Speakers
Connect the Yamaha speakers to the Onkyo receiver using the provided speaker wire. Ensure correct polarity (positive to positive, negative to negative) for each speaker. The receiver supports a 5.2 channel configuration.
- Connect the front left and right speakers to the 'FRONT' terminals.
- Connect the center speaker to the 'CENTER' terminal (if using a 5.1 or 5.2 setup).
- Connect the surround left and right speakers to the 'SURROUND' terminals.
- Connect subwoofers to the 'SUBWOOFER PRE-OUT' jacks using RCA cables (up to two subwoofers supported).
4.4 Connecting Audio/Video Devices
The Onkyo TX-SR373 receiver offers various input and output options:
- HDMI Inputs: Connect up to four HDMI-enabled devices (e.g., Blu-ray player, game console, streaming device) to the HDMI IN ports.
- HDMI Output: Connect your TV or projector to the HDMI OUT port. This port supports 4K Ultra HD and 3D pass-through.
- Composite Video Inputs: Two inputs for older video devices.
- Digital Audio Inputs: One coaxial and one optical TOSLINK input for digital audio sources.
- Analog Audio Inputs: Three stereo RCA inputs for analog audio devices.
- USB Input: A front-panel USB port for connecting portable USB devices.
- Headphone Output: A 1/4" (6.4 mm) headphone jack on the front panel.
Image 4.1: Rear panel connections of the Onkyo TX-SR373 AV Receiver.
4.5 Power Connection
After all audio/video and speaker connections are made, connect the receiver's power cord to a wall outlet.
5. Operating Instructions
Image 5.1: Front panel of the Onkyo TX-SR373 AV Receiver.
5.1 Powering On/Off
Press the ON/STANDBY button on the front panel or remote control to turn the receiver on or off.
5.2 Input Selection
Use the input selector buttons on the front panel (e.g., BD/DVD, CBL/SAT, GAME, CD, TV, TUNER, USB) or the remote control to select the desired input source.
5.3 Volume Control
Adjust the master volume using the large MASTER VOLUME knob on the front panel or the volume buttons on the remote control.
5.4 Bluetooth Pairing
- Press the BLUETOOTH button on the front panel or remote control. The receiver will enter pairing mode.
- On your mobile device (smartphone, tablet), enable Bluetooth and search for available devices.
- Select "Onkyo TX-SR373" (or similar name) from the list of devices.
- Once paired, audio from your device will play through the receiver.
5.5 USB Playback
Connect a USB storage device to the front-panel USB input. The receiver supports MP3, WMA, and MPEG-4/AAC audio tracks. Use the receiver's controls or remote to navigate and play files.
5.6 AM/FM Tuner
Press the TUNER button to select the AM or FM band. Use the tuning buttons to find radio stations. The receiver has a 60-station preset memory (30 FM, 30 AM) for storing your favorite stations.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your system.
- Cleaning: Wipe the receiver and speakers with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure the receiver's ventilation openings remain clear of dust and obstructions.
- Speaker Grilles: Periodically clean speaker grilles to remove dust buildup.
7. Troubleshooting
If you encounter issues, refer to the following common solutions:
| Problem | Possible Cause / Solution |
|---|---|
| No power | Check power cord connection. Ensure outlet is functional. |
| No sound from speakers | Verify speaker wire connections and polarity. Check receiver's volume level and mute status. Ensure correct input source is selected. |
| No picture on TV | Check HDMI cable connections between source, receiver, and TV. Ensure TV is on the correct HDMI input. |
| Bluetooth not connecting | Ensure receiver is in Bluetooth pairing mode. Check that Bluetooth is enabled on your device and it is within range. Try restarting both devices. |
| Poor radio reception | Adjust the position of the AM/FM antennas. Check for local interference. |
8. Specifications
8.1 Onkyo TX-SR373 AV Receiver
- Channels: 5.2 Channel
- Output Power: 70W per channel (80W per channel also stated in description)
- Video Pass-Through: Full 4K Ultra HD, 3D Pass-Through
- HDMI Specifications: HDMI 2.0a, HDCP 2.2
- Audio Decoding: Dolby TruHD, DTS-HD Master Audio
- Connectivity: Bluetooth, 4 x HDMI In, 1 x HDMI Out, 2 x Composite Video In, 1 x USB In (front), 1 x Digital Coaxial In, 1 x Optical TOSLINK In, 3 x Stereo RCA In, 2 x Subwoofer Pre-Out, 1 x 1/4" Headphone Out (front)
- Tuner: AM/FM with 60 station preset memory
8.2 Yamaha 2-Way Indoor/Outdoor Speakers
- Type: 2-Way Indoor/Outdoor Weatherproof Speaker System
- Woofer: 5" High Compliance Polypropylene Mica Filled
- Tweeter: 1/2" PEI Dome
- Frequency Response: 55 Hz - 40 kHz
- Maximum Input Power: 120 W
- Mounting: Wall Mounting Bracket Included, Vertical or Horizontal Placement
- Speaker Terminals: 5-way Binding Post
- Dimensions (W x H x D): 5-3/16" x 10" x 6" (approximately 13.18 cm x 25.4 cm x 15.24 cm)
9. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official Onkyo and Yamaha websites. Keep your purchase receipt as proof of purchase for warranty claims.
If you require further assistance, contact the manufacturer's customer support directly.
