ZK-3002 TPA3255 2x300W 2-Channel Stereo Amplifier Module

ZK-3002 TPA3255 2x300W 2-Channel Stereo Amplifier Module

The ZK-3002 TPA3255 2x300W 2-Channel Stereo Amplifier Module is a TPA3255-based Class-D digital power amplifier board designed for high-power stereo and mono audio systems.

It can operate as a 2-channel unit in BTL stereo mode under normal use, or as a single-channel unit in PBTL mono mode when bridged. It offers a maximum output power of up to 2 × 300W in stereo mode and up to 600W in mono bridged mode. These figures represent maximum values ​​achieved under conditions of high supply voltage and suitable low-impedance speakers.

For cooling, it features a large aluminum heatsink and a fan.

The fan can operate with automatic temperature control or be switched to continuous manual operation mode via a DIP switch.

Specifications

• Maximum Supply Limit: Approx. 53V DC
• Recommended Supply: DC 36–48V / 10A or higher
• Power Amplifier IC: TPA3255
• Operation Modes: BTL stereo / PBTL mono
• Number of Stereo Channels: 2
• Mono Bridge Mode: Available
• Operating Voltage: DC 18–50V
• Stereo Speaker Impedance: 3–8Ω
• Mono Speaker Impedance: 2–8Ω
• Stereo Speaker Power Range: 50–300W
• Mono Speaker Power Range: 100–600W
• Gain Setting: 26–36dB
• Gain Control: 10-step potentiometer
• Cooling: Aluminum heatsink + fan
• Fan Mode: Automatic temperature-controlled / manual continuous

BTL / PBTL Mode Selection

The operation mode can be changed using the DIP switch on the board;

BTL: 2-channel stereo operation

PBTL: Single-channel high-power mono operation

Stereo BTL Mode Maximum Output Power

At 50V supply;

4Ω: Approx. 300W + 300W

8Ω: Approx. 160W + 160W

PBTL Mono Bridge Mode Maximum Output Power

At 50V supply;

2Ω: Approx. 600W

4Ω: Approx. 300W 

8Ω: Approx. 160W