How to Use ZK-1002T Stereo Amplifier: Examples, Pinouts, and Specs

The ZK-1002T Stereo Amplifier by Arrarown is a compact and versatile audio amplifier designed to enhance stereo audio output. It supports multiple input options, including Bluetooth and AUX, and features adjustable volume controls for optimal sound quality. With its small form factor and high efficiency, the ZK-1002T is ideal for a variety of audio applications, such as home audio systems, DIY speaker projects, and portable sound systems.

• DIY speaker systems
• Home audio setups
• Portable audio amplifiers
• Classroom or small event sound systems
• Audio enhancement for TVs, computers, or mobile devices

The ZK-1002T is designed to deliver high-quality stereo sound while maintaining low power consumption. Below are the key technical details:

The ZK-1002T features a straightforward interface for power, input, and output connections. Below is the pin configuration:

The ZK-1002T is easy to integrate into audio systems. Follow the steps below to use the amplifier effectively:

1. Connect a DC power supply (5V - 24V) to the + and - terminals.
2. Ensure the power supply voltage matches the amplifier's requirements to avoid damage.

• Bluetooth Mode: Pair your device with the amplifier by searching for the Bluetooth name (e.g., "ZK-1002T") and connecting.
• AUX Mode: Connect the left and right audio input signals to the AUX IN L and AUX IN R pins, respectively.

1. Connect the left speaker to the SPK OUT L+ and SPK OUT L- terminals.
2. Connect the right speaker to the SPK OUT R+ and SPK OUT R- terminals.
3. Ensure the speakers have an impedance of 4Ω - 8Ω for optimal performance.

• Use the onboard volume control knob to adjust the output volume to your preference.

• Avoid exceeding the maximum input voltage of 24V to prevent damage.
• Ensure proper heat dissipation, especially at higher power levels.
• Use shielded cables for AUX input to minimize noise and interference.

The ZK-1002T can be used with an Arduino UNO to control audio playback via Bluetooth. Below is an example code snippet to demonstrate basic functionality:

/* Example: Controlling ZK-1002T via Arduino UNO
   This code demonstrates how to send a signal to the amplifier
   to indicate playback status using an LED indicator.
*/

const int ledPin = 13; // Pin connected to an LED for status indication

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
  digitalWrite(ledPin, LOW); // Turn off the LED initially
}

void loop() {
  // Simulate playback status
  digitalWrite(ledPin, HIGH); // Turn on the LED (indicates playback)
  delay(5000); // Keep the LED on for 5 seconds
  digitalWrite(ledPin, LOW); // Turn off the LED (indicates stop)
  delay(2000); // Wait for 2 seconds before repeating
}

1. No Sound Output

   • Ensure the power supply is connected and within the specified voltage range.
   • Verify that the speakers are properly connected to the output terminals.
   • Check the audio input source (Bluetooth or AUX) and ensure it is active.

2. Distorted Sound

   • Reduce the input volume from the audio source to prevent clipping.
   • Ensure the speakers match the recommended impedance (4Ω - 8Ω).

3. Bluetooth Connection Issues

   • Ensure the amplifier is powered on and in Bluetooth mode.
   • Disconnect other devices that may already be paired with the amplifier.

4. Overheating

   • Ensure proper ventilation around the amplifier.
   • Avoid operating at maximum power for extended periods.

Q: Can I use a 12V battery to power the ZK-1002T?
A: Yes, a 12V battery is within the supported voltage range and can be used to power the amplifier.

Q: What is the maximum range of the Bluetooth connection?
A: The Bluetooth range is approximately 10 meters in an open environment.

Q: Can I connect headphones to the ZK-1002T?
A: No, the ZK-1002T is designed for speaker output and is not suitable for headphones.

Q: Is the amplifier compatible with 2Ω speakers?
A: No, the amplifier is designed for speakers with an impedance of 4Ω - 8Ω. Using 2Ω speakers may cause damage.