SOOMFON SF-BT013 3-in-1 Bluetooth 5.0 Audio Adapter

1. Product Overview

The SOOMFON SF-BT013 is a versatile 3-in-1 Bluetooth 5.0 Audio Adapter designed to enhance your audio experience. It functions as a Bluetooth Transmitter (TX), a Bluetooth Receiver (RX), and offers a Bypass Mode for direct wired connections. With its wide compatibility and user-friendly design, it allows you to stream audio wirelessly to and from various devices, including TVs, PCs, home stereos, headphones, and speakers.

Figure 1: SOOMFON SF-BT013 Product Overview

Key Features:

• 3-in-1 Functionality: Bluetooth Transmitter (TX), Bluetooth Receiver (RX), and Bypass Mode.
• Bluetooth 5.0: Ensures stable transmission, low latency, and long-range connectivity.
• Dual Link: Connects to two Bluetooth headphones or speakers simultaneously in Transmitter mode.
• Wide Compatibility: Supports Optical, 3.5mm AUX, and RCA audio input/output.
• 1.8'' LCD Display: Provides clear visual feedback on connection status, mode, and paired devices.
• User-Friendly Controls: Features convenient push buttons and a rotary knob for easy operation and volume adjustment.
• Long Range: Up to 14m (indoor) in TX mode and up to 50m (outdoor) in RX mode.

2. Package Contents

Please check the box for the following items:

Figure 2: Packing List

• Bluetooth Audio Adapter (SF-BT013) x1
• 3.5 mm Aux to RCA Cable x1
• USB-C Power Cable x1
• Optical Cable x1
• 3.5 mm Aux Cable x1
• User Manual x1

3. Setup Guide

3.1 Powering the Device

The SF-BT013 is powered via a USB-C cable. Connect the included USB-C power cable to the 'DC IN' port on the device and plug the other end into a standard USB power adapter (DC 5V 500mA, not included) or a USB port on your TV/PC.

3.2 Connecting Audio Cables

The adapter supports various audio connections:

• Optical: For high-quality digital audio. Use the 'OPTICAL IN' or 'OPTICAL OUT' ports.
• 3.5mm AUX: For analog audio. Use the 'AUX IN' or 'AUX OUT' ports.
• RCA: Use the included 3.5mm Aux to RCA cable to connect to RCA ports on your audio equipment.

Figure 3: Optional Connections and User Interface

3.3 Initial Pairing (Receiver Mode Example)

Follow these general steps for initial setup and pairing:

1. Insert Cables: Connect the power cable and the appropriate audio cable (e.g., 3.5mm AUX) into the SF-BT013 and your audio output device (e.g., wired speaker).
2. Power On & Pair: Turn on the SF-BT013. On your Bluetooth-enabled device (e.g., smartphone), turn on Bluetooth, search for "Soomfon SF-BT013", and select it to pair.
3. Enjoy: Once paired, select the desired mode on the SF-BT013 and enjoy your audio.

Figure 4: Easy to Use Steps

4. Operating Modes

The SF-BT013 offers three distinct operating modes:

Figure 5: 3-in-1 Bluetooth Audio Adapter Modes

4.1 Transmitter Mode (TX)

In TX mode, the SF-BT013 transmits audio from non-Bluetooth devices (e.g., TV, PC, Laptop) to Bluetooth-enabled headphones or speakers.

Figure 6: Transmitter Mode (TX) Setup

• Connect your audio source (TV, PC, Laptop) to the SF-BT013's TX Input (Optical or 3.5mm AUX).
• The SF-BT013 will search for nearby Bluetooth headphones or speakers.
• Pair with your desired Bluetooth audio output device(s).
• Dual Link Feature: In TX mode, you can connect two Bluetooth devices simultaneously to share audio, ideal for watching TV with a partner without disturbing others.

4.2 Receiver Mode (RX)

In RX mode, the SF-BT013 receives audio from Bluetooth-enabled devices (e.g., smartphone, tablet, computer) and outputs it to wired speakers, car audio systems, or amplifiers.

Figure 7: Receiver Mode (RX) Setup

• Connect your wired audio system (speakers, amplifier) to the SF-BT013's RX Output (Optical or 3.5mm AUX).
• On your Bluetooth source device (phone, tablet, computer), search for "Soomfon SF-BT013" and pair.
• Audio from your source device will now play through your wired audio system.

4.3 Bypass Mode

Bypass mode allows for a direct wired connection between your audio source and output device, without using the Bluetooth functionality. This means the SF-BT013 acts as a pass-through device, and you do not need to turn it off to use your wired setup.

Figure 8: Bypass Mode Setup

• Connect your audio source (e.g., TV) to the SF-BT013's input.
• Connect your audio output device (e.g., wired speakers) to the SF-BT013's output.
• The audio signal will pass directly through the device.

Bypass Mode Volume Adjustment (Optical Connection)

When using an optical cable in bypass mode, especially with a TV, specific settings may be required:

• To External Speakers: Set your TV's audio output to "PCM" (Settings > Sound > Digital Audio Output > PCM). Volume adjustment will typically be done via the speaker's control knob or the SF-BT013's knob, not the TV remote. Some TVs may also require setting sound to "External Speakers."
• To Amplifier: Set your TV's audio output to "RAW" (Settings > Sound > Digital Audio Output > RAW). Volume and audio source selection should be managed via the amplifier's remote control or manual.

5. Specifications

Figure 9: Bluetooth 5.0 Technology

Figure 10: Long Range Strong Connection

6. Troubleshooting

• Device requires a 4-digit password for pairing: The SF-BT013 does not bypass password requirements. If your sound system requires a password, you will need to enter it. This is dependent on your sound system, not the adapter.
• No sound in Bypass Mode (Optical Connection): Refer to section 4.3 for detailed instructions on adjusting your TV's digital audio output settings (PCM for speakers, RAW for amplifiers).
• USB connection for audio: The USB-C port is for power supply only. It does not support audio input or output.
• Connecting multiple speakers/headphones: In TX mode, the device supports connecting up to two Bluetooth speakers or headphones simultaneously. In RX mode, only one device can be used as an audio output source at a time.
• Bluetooth range issues: The stated range (14m TX indoor, 20-30m RX indoor, 50m RX outdoor) can be affected by obstacles (walls, metal, people) or electromagnetic interference. Try to minimize obstructions between the adapter and your connected devices.
• No volume control: The SF-BT013 has a rotary knob on the panel for volume control.

7. Maintenance

To ensure the longevity and optimal performance of your SOOMFON SF-BT013, please follow these maintenance guidelines:

• Keep Dry: Avoid exposing the device to water, moisture, or high humidity.
• Clean Gently: Use a soft, dry cloth to clean the device. Do not use harsh chemicals or abrasive cleaners.
• Avoid Extreme Temperatures: Do not expose the device to extremely high or low temperatures.
• Handle with Care: Avoid dropping or subjecting the device to strong impacts.
• Proper Storage: When not in use for extended periods, store the device in a cool, dry place.

8. User Tips

• Automatic Reconnection: In RX mode, once paired, the device remembers the pairing and will automatically connect to the last connected device when powered on.
• Volume Control: Utilize the rotary knob on the device's panel for convenient volume adjustments.
• Optimal Placement: For best Bluetooth range and stability, place the SF-BT013 in an open area, minimizing physical obstructions like walls or large metal objects.
• Dual Listening: Take advantage of the dual link feature in TX mode to connect two pairs of Bluetooth headphones, allowing two people to enjoy audio from a single source simultaneously.

9. Warranty and Support

For warranty information, technical support, or any inquiries regarding your SOOMFON SF-BT013, please refer to the contact information provided with your purchase or visit the official SOOMFON website. Keep your proof of purchase for warranty claims.

10. Product Demonstration Video

Watch this video for a visual guide on the features and operation of the SOOMFON SF-BT013.