H3-2.1 2.1-Channel Class D DSP Plate Amplifier for Home Theater and Active Speaker Systems
Product Overview
The Haozhiseng Audio H3-2.1 is a powerful 2.1-channel Class D DSP plate amplifier module designed for home theater speaker systems, powered subwoofer systems, active speaker cabinets, and compact PA applications.
The module integrates a Class D amplifier board, switching power supply, and DSP processing module into one compact plate amplifier solution. With an output power of 1800W + 900W + 900W at 4Ω, the H3-2.1 provides strong power for one subwoofer channel and two satellite / top speaker channels.
Built with an integrated DSP system, the H3-2.1 supports professional audio processing functions including mute, polarity, gain, delay, limiter, mixer, EQ, and crossover control. Users can manage and tune the system through PC software via USB or RS-485 connection, making it flexible for different speaker designs and installation requirements.
With its compact installation size, high output power, and wide operating voltage options, the H3-2.1 is an ideal amplifier solution for manufacturers, installers, and audio system builders who need reliable performance in a 2.1-channel active speaker system.
Key Features
2.1-Channel High-Power Output
The H3-2.1 delivers 1800W + 900W + 900W at 4Ω, making it suitable for one subwoofer and two full-range or top speaker channels.
Integrated Class D Amplifier Design
The high-efficiency Class D amplifier platform provides powerful output, reduced heat generation, and reliable long-term operation.
Built-In DSP Processing
The integrated DSP module supports Mute, Polarity, Gain, Delay, Limiter, Mixer, EQ, and X-Over, allowing precise system tuning for different speaker applications.
USB and RS-485 DSP Control
The system can be managed through PC software using USB or RS-485, making setup, adjustment, and system optimization more convenient.
Compact Installation Dimension
With a compact plate amplifier structure, the H3-2.1 is easy to integrate into active speaker cabinets, powered subwoofer systems, and home theater enclosures.
Wide Operating Voltage Options
The H3-2.1 supports multiple voltage versions, including:
110V Version: 90V–135V / 220V Version: 180V–265V / PFC Version: 90V–265V
Complete Protection System
Built-in protection functions include Short Circuit, DCP, OVP, UVP, OCP, and OTP, helping protect both the amplifier module and speaker system during operation.
Typical Applications
2.1-channel home theater speaker systems
Powered subwoofer systems
Active speaker systems
Compact PA systems
Multimedia speaker systems
OEM active loudspeaker projects
Custom speaker manufacturing
Small touring sound reinforcement systems
Technical Specifications
| Item | Specification |
|---|---|
| Model | H3-2.1 |
| Amplifier Type | 2.1-Channel Class D DSP Plate Amplifier |
| 8Ω Power | 1500W + 500W + 500W |
| 4Ω Power | 1800W + 900W + 900W |
| Frequency Response | 20Hz – 20kHz ±1dB |
| THD+N | <0.1%, 1kHz, 1W, 8Ω |
| Signal to Noise Ratio | >100dB, 1kHz |
| Channel Separation | >80dB, 1kHz |
| Amplifier Class | Class D |
| Protection | Short Circuit, DCP, OVP, UVP, OCP, OTP |
| Operating Voltage | 110V Version: 90V–135V / 220V Version: 180V–265V / PFC Version: 90V–265V |
| Input Sensitivity | 0.77V |
| Input Impedance | 20kΩ |
| DSP Function | Mute, Polarity, Gain, Delay, Limiter, Mixer, EQ, X-Over |
| DSP Control | USB and RS-485 |
| Dimensions | 312 × 190 × 120 mm |
| Packing Dimension | 350 × 210 × 150 mm |
| Net Weight | 4.9 kg |
| Gross Weight | 5.9 kg |
Why Choose H3-2.1?
The H3-2.1 combines high-power Class D amplification, built-in DSP processing, switching power supply, wide voltage support, and compact cabinet integration in one professional plate amplifier module. It is a practical solution for 2.1-channel home theater systems, active speaker systems, powered subwoofer systems, and OEM speaker manufacturing projects that require powerful output, flexible tuning, and reliable performance.
