1. Introduction
The KINTER MA-150 is a compact and versatile 2-channel audio power amplifier designed for a wide range of applications, including car, motorcycle, home audio, DIY projects, and game console upgrades. Featuring a high-quality aluminum housing and a simple panel design, it delivers clear audio with 500W peak power and 20W actual power per channel. This manual provides essential information for safe and effective use of your MA-150 amplifier.
Figure 1: KINTER MA-150 Mini Audio Power Amplifier
2. Product Contents
Please check the package contents upon receipt to ensure all items are present:
- MA-150 Amplifier (x1)
- English Instruction Manual (x1)
- Power Cable (x1)
- Speaker Line (x1)
Figure 2: Package Contents
3. Setup Instructions
Follow these steps to connect your KINTER MA-150 amplifier:
- Connect Audio Input: Use an RCA cable to connect your audio source (e.g., computer, VCD/DVD player, game console) to the RCA INPUT jacks (L and R) on the front panel of the amplifier.
- Connect Speakers: Connect your speakers to the SPEAKER terminals (L+, L-, R+, R-) on the back panel of the amplifier. Ensure correct polarity (+ to + and - to -).
- Connect Power: Connect the provided power cable to the POWER terminals (REM, GND, V+ for DC-12V.5A) on the back panel. Ensure a stable 12V DC power supply with a constant current to avoid damage.
- USB Charging: The USB CHARGER port (5V) on the front panel can be used for charging compatible devices.
Figure 3: Wiring Diagram
Video 1: Unboxing and basic connection demonstration of the KINTER MA-150 amplifier.
4. Operating Instructions
Once connected, operate your MA-150 amplifier as follows:
- Power On/Off: The amplifier will power on when connected to a 12V DC power source. There is no separate power switch.
- Volume Control (LEVEL): Use the LEVEL knob on the front panel to adjust the output volume. Rotate clockwise to increase volume and counter-clockwise to decrease it. The range is from -10 to +10.
- Filter Switch (L-OFF-H): This switch controls the audio filter.
- L (Low Pass Filter): Filters out high frequencies, typically used for subwoofers.
- OFF: Disables the filter, providing full-range audio.
- H (High Pass Filter): Filters out low frequencies, typically used for full-range speakers to prevent distortion from bass.
- USB Charging: The 5V USB CHARGER port can be used to power or charge small electronic devices.
Figure 4: Front Panel Controls
Figure 5: Back Panel Connections
5. Maintenance
To ensure the longevity and optimal performance of your KINTER MA-150 amplifier, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
- Ventilation: Ensure the amplifier is placed in a well-ventilated area to prevent overheating. Do not block the heat sink fins.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Power Supply: Always use the recommended power supply and ensure the current is constant to prevent damage to the device.
6. Troubleshooting
If you encounter issues with your MA-150 amplifier, refer to the following common problems and solutions:
- No Sound Output:
- Check all audio input and speaker connections to ensure they are secure and correctly wired.
- Verify that the audio source is playing and its volume is turned up.
- Ensure the amplifier is receiving proper 12V DC power.
- Check the LEVEL knob on the amplifier; it might be set too low.
- Distorted Sound:
- Reduce the volume (LEVEL knob) on the amplifier and/or the audio source.
- Check speaker impedance compatibility with the amplifier.
- Ensure speaker wires are not frayed or shorting.
- Speaker Noise (Humming/Buzzing):
- First, exclude electromagnetic interference in the surrounding environment. This can be caused by power cables, other electronic devices, or poor grounding.
- Ensure all connections are tight and properly shielded.
- Try a different power source or audio cable.
- Amplifier Overheating:
- Ensure adequate ventilation around the amplifier. Do not place it in an enclosed space.
- Reduce the volume or the duration of high-volume playback.
If the problem persists after trying these solutions, please contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | KINTER |
| Model Number | MA-150 |
| Channels | 2 (2.0 Stereo) |
| Maximum Power Per Channel | 20W (Actual Power) / 500W (Peak Power) |
| Input Type | RCA |
| USB Charging Interface | 5V |
| Power Supply | DC 12V, 5A |
| Dimensions (L x W x H) | 11cm x 8cm x 4cm (4.33 x 3.15 x 1.57 inches) |
| Housing Material | Aluminum |
| Origin | Mainland China |
| Certification | CE, RoHS |
| Application | Car, Motorcycle, Home, DIY, Game Console Audio Transformation |
Figure 6: Product Dimensions
8. User Tips
- Read the Manual: Always read the instruction manual completely before using the amplifier to familiarize yourself with its features and proper operation.
- Stable Power: Ensure you use a stable 12V DC power supply with a constant current to prevent potential damage to the amplifier and ensure optimal performance.
- Minimize Interference: If you experience speaker noise, check for and eliminate electromagnetic interference from other electronic devices or power cables in the vicinity.
- Safety First: Keep the product out of reach of children to avoid accidents.
- Proper Connections: Double-check all wiring connections, especially speaker polarity and power connections, before powering on the device.
9. Warranty & Support
KINTER products are manufactured to high-quality standards and are CE and RoHS certified. For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or KINTER customer support directly. Please retain your proof of purchase for warranty claims.
