1. Introduction
The Kinter MA170 is a compact and efficient 2-channel mini digital audio power amplifier designed for versatile audio applications, including car audio systems or connecting to MP3 players. It delivers clear sound with adjustable bass and treble controls, making it suitable for various listening environments. This manual provides essential information for setting up, operating, and maintaining your MA170 amplifier.
Figure 1: Front view of the Kinter MA170 amplifier.
2. What's in the Box
Upon opening the package, you should find the following items:
- Kinter MA170 Mini Digital Audio Power Amplifier
- Instruction Manual (this document)
Note: A 12V power supply is required for operation and is sold separately. Connecting cables are also not included.
3. Setup
Follow these steps to set up your Kinter MA170 amplifier:
3.1. Power Connection
The MA170 requires a 12V DC power supply. Ensure the power supply has a 2.1 mm x 5.5 mm DC plug with center positive polarity. Connect the power supply to the DC 12V input port on the rear of the amplifier.
3.2. Audio Input
Connect your audio source (e.g., MP3 player, smartphone, PC, DVD player) to the RCA input jacks (L/R) on the rear of the amplifier. Use appropriate RCA cables for this connection.
3.3. Speaker Output
Connect your speakers to the speaker output terminals on the rear of the amplifier. The MA170 supports speakers with an impedance of 4-16 ohms. Ensure correct polarity (positive to positive, negative to negative) for each speaker. The amplifier provides 2 x 18 watts per channel.
Figure 2: Rear view of the Kinter MA170 amplifier with connection points.
Figure 3: Application Diagram for Kinter MA170.
4. Operating Instructions
Once all connections are secure, you can begin operating your amplifier:
4.1. Power On/Off
Press the POWER ON/OFF button on the front panel to turn the amplifier on or off. The volume knob will illuminate with a colorful LED when the unit is powered on.
Figure 4: Illuminated volume knob on the Kinter MA170.
4.2. Volume Control
Rotate the large VOLUME knob clockwise to increase the audio output level and counter-clockwise to decrease it.
4.3. Bass Adjustment
Use the BASS knob to adjust the low-frequency output. Turn clockwise to boost bass and counter-clockwise to reduce it.
4.4. Treble Adjustment
Use the TREBLE knob to adjust the high-frequency output. Turn clockwise to boost treble and counter-clockwise to reduce it.
5. Specifications
Detailed technical specifications for the Kinter MA170 amplifier:
| Feature | Specification |
|---|---|
| Power Output | 2 x 18 watts |
| Input Impedance | 47K ohms |
| Output Impedance | 4 - 16 ohms |
| Frequency Response | 20 - 20,000 Hz |
| Minimum THD | ≤0.02% |
| Input Voltage | 9 - 14.4 VDC |
| Rated Input Current | 1A - 3A |
| DC Plug Size | 2.1 mm x 5.5 mm |
| DC Input Polarity | Center positive |
| Dimensions (L x W x D) | 4-7/8" x 1-5/8" x 4-5/8" |
Figure 5: Kinter MA170 dimensions.
6. Maintenance
To ensure the longevity and optimal performance of your Kinter MA170 amplifier, follow these maintenance guidelines:
- Keep the amplifier clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or solvents.
- Ensure proper ventilation around the unit to prevent overheating. Do not block the heat sink fins.
- Avoid exposing the amplifier to extreme temperatures, direct sunlight, high humidity, or dusty environments.
- Disconnect the power supply when the amplifier is not in use for extended periods.
7. Troubleshooting
If you encounter issues with your Kinter MA170 amplifier, refer to the following common troubleshooting steps:
- No Power: Ensure the 12V DC power supply is correctly connected and functioning. Check the power outlet.
- No Sound: Verify that the audio input cables are securely connected to both the source and the amplifier. Check speaker wire connections for correct polarity and ensure they are firmly inserted into the terminals. Confirm the volume knob is turned up and the audio source is playing.
- Distorted Sound: Reduce the volume level on both the amplifier and the audio source. Check speaker impedance to ensure it is within the recommended 4-16 ohms range. Inspect speaker wires for any fraying or short circuits.
- Intermittent Sound: Check all cable connections for looseness. Ensure the power supply is stable and providing consistent voltage.
If the problem persists after attempting these steps, please refer to the support information in the next section.
8. Warranty and Support
For warranty information or technical support regarding your Kinter MA170 amplifier, please contact Kinter customer service through their official website or the retailer from whom you purchased the product. Keep your purchase receipt as proof of purchase.
An additional user manual in PDF format may be available for download from the product's Amazon page or the Kinter website for further reference: Kinter MA170 User Manual (PDF).
