1. Introduction
The SMSL AD13 is a compact and powerful Bluetooth digital HIFI amplifier designed to deliver high-quality audio. Featuring Bluetooth 4.0 connectivity, USB input, and multiple audio inputs, it offers versatile options for connecting your audio sources. This manual provides essential information for setting up, operating, and maintaining your AD13 amplifier.
2. Package Contents
Please check the package for the following items:
- 1 x SMSL AD13 Amplifier
- 1 x 19V / 6.3A Power Adapter
- 1 x Micro USB Cable
- 1 x Remote Control
- 1 x Bluetooth Antenna
3. Product Features
- Integrated DSP: Features Digital Signal Processing (DSP) with various digital EQ modes. The DSP monitors power and amplifier heat in real-time, providing intelligent output protection. It also includes a 20 Hz digital high-pass filter to prevent out-of-band power generation, ensuring high amplifier efficiency and low heat.
- Advanced Bluetooth Connectivity: Equipped with the latest CSR Bluetooth 4.0 input and an external Bluetooth antenna for optimal and stable wireless connection.
- High-Performance Amplifier Chip: Utilizes TI's latest intelligent power amplifier chip, TA5166M, which offers ultra-low distortion of 0.02% and comprehensive protection functions for connected speakers under various operating conditions.
- USB Digital Audio: Incorporates a USB digital audio solution from Taiwan CMEDIA, a high-end audio supplier, for superior digital audio playback.
- Quality Power Supply & Remote Control: Comes with a standard high-output, high-quality power adapter and a remote control for convenient operation.
4. Setup Guide
Follow these steps to set up your SMSL AD13 amplifier:
- Connect Speakers: Connect your passive speakers to the speaker terminals on the rear of the AD13. Ensure correct polarity (+ to + and - to -) for both left (L) and right (R) channels.
- Connect Audio Sources:
- USB Input: Connect a Micro USB cable from your computer or other USB audio source to the USB input port on the AD13.
- Analog Input: Connect your analog audio source (e.g., CD player, smartphone) to one of the 3.5mm AUX input jacks using an appropriate audio cable.
- Bluetooth Antenna: Screw the provided Bluetooth antenna firmly into its connector on the rear panel.
- Connect Power: Connect the 19V / 6.3A power adapter to the DC 19V input jack on the rear of the amplifier, then plug the adapter into a wall outlet.
- Power On: The amplifier will power on automatically or can be turned on using the power button on the front panel or remote control.
Figure 1: Rear panel connections of the AD13 amplifier.
5. Operating Instructions
5.1 Power On/Off
Press the power button on the front panel or the remote control to turn the amplifier on or off. The display will illuminate when powered on.
5.2 Input Selection
Use the input selection button on the front panel or the remote control to cycle through available inputs: USB, AUX1 (3.5mm), AUX2 (3.5mm), and Bluetooth (BT). The selected input will be indicated on the display.
5.3 Volume Control
Rotate the large knob on the front panel clockwise to increase volume and counter-clockwise to decrease it. Alternatively, use the volume up/down buttons on the remote control.
5.4 Bluetooth Pairing
- Select the Bluetooth input on the AD13. The display will show 'BT' and may flash, indicating it's in pairing mode.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select 'SMSL AD13' from the list of devices. Once connected, the display will stop flashing.
- You can now play audio from your device through the AD13 amplifier.
5.5 EQ Adjustment
The AD13 features built-in EQ settings. Use the EQ button on the remote control to cycle through different equalization presets to tailor the sound to your preference. The current EQ mode will be shown on the display.
Figure 2: Front panel controls of the AD13 amplifier.
6. Maintenance
To ensure the longevity and optimal performance of your SMSL AD13 amplifier, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or abrasive materials, as they may damage the finish.
- Ventilation: Ensure the amplifier is placed in a well-ventilated area. Do not block the ventilation holes. Avoid placing it in enclosed spaces or on soft surfaces that could obstruct airflow.
- Power Disconnection: Disconnect the power adapter from the wall outlet if the amplifier will not be used for an extended period.
- Environmental Conditions: Avoid exposing the amplifier to extreme temperatures, high humidity, direct sunlight, or dusty environments.
7. Troubleshooting
If you encounter issues with your SMSL AD13 amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Incorrect input selected; loose speaker connections; low volume; faulty audio cable. | Verify the correct input is selected. Check all speaker wire connections. Increase volume. Test with a different audio cable. |
| Bluetooth not connecting | Amplifier not in pairing mode; device too far; interference; previously paired device connected. | Ensure AD13 is on Bluetooth input and in pairing mode. Move device closer. Turn off Bluetooth on other nearby devices. Forget 'SMSL AD13' on your device and re-pair. |
| Distorted sound | Volume too high; faulty audio source; damaged speakers; incorrect EQ setting. | Reduce volume. Test with a different audio source. Check speaker condition. Adjust EQ settings. |
| Remote control not working | Dead batteries; obstruction; remote not pointed at sensor. | Replace batteries. Remove any obstructions between remote and amplifier. Point remote directly at the amplifier's IR sensor. |
8. Specifications
Detailed technical specifications for the SMSL AD13 amplifier:
| Feature | Specification |
|---|---|
| Signal-to-Noise Ratio (SNR) | 95dB |
| Total Harmonic Distortion + Noise (THD+N) | 0.02% |
| USB Interface | USB 2.0 |
| Output Power | 50W per channel (at 1% THD) |
| USB Sampling Rate | 44.1kHz / 48kHz |
| Power Consumption | 40W |
| EQ Adjustment | Yes |
| Bluetooth Version | BT 4.0 |
| Main Chips | TAS5766M, CM108AH, CS5341 |
| Input Ports | 3.5mm AUX x 2, USB x 1, Bluetooth 4.0 x 1 |
| Output Ports | Speaker terminals |
| Capacitor | Panasonic 4700uf |
| Operating Voltage | 19V |
| Weight | 371g |
| Dimensions (W x D x H) | 45 x 138 x 75mm |
| Channels | 2 |
9. Warranty and Support
This product is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact your retailer or the manufacturer's customer service. Keep your purchase receipt as proof of purchase.
