H2450 2 × 500W 2-Channel Class D DSP Amplifier Module for Active Speakers
Product Overview
The H2450 is a compact two-channel Class D amplifier module designed for active PA speakers, powered loudspeaker cabinets, stage monitors, and professional sound reinforcement systems.
It integrates a Class D amplifier board, switching power supply, and DSP processing module into one lightweight unit. The H2450 delivers 2 × 450W at 8 ohms and 2 × 500W at 4 ohms, providing efficient and reliable amplification for compact powered speaker systems.
Developed from Haozhiseng Audio’s H1 single-channel amplifier platform, the H2 Series offers higher channel density while maintaining a compact installation size. The series includes the H2450, H2650, and H2800, allowing manufacturers to select a suitable power configuration for different loudspeaker designs.
Key Features
- Two-channel Class D amplifier module
- 2 × 450W output power at 8 ohms
- 2 × 500W output power at 4 ohms
- Integrated switching power supply and DSP processing
- USB and RS-485 DSP control
- Compact 332 × 160 × 100 mm installation dimensions
- Lightweight 2.75 kg design
- High-efficiency thermal management
- High-pass filter and volume control
- Comprehensive amplifier protection system
- Multiple operating-voltage options
- Suitable for compact active PA speaker cabinets
Integrated DSP Processing
The H2450 includes an integrated DSP module for precise loudspeaker tuning and system management. Users can connect the amplifier to a computer through USB or RS-485 to configure and monitor the powered speaker system.
Available DSP functions include:
- Mute
- Polarity
- Gain
- Delay
- Limiter
- Equalization
- Crossover
These functions allow the amplifier module to be optimized for different loudspeaker drivers, cabinet designs, and sound reinforcement applications.
Compact and Lightweight Design
With installation dimensions of only 332 × 160 × 100 mm and a net weight of 2.75 kg, the H2450 can be integrated into compact powered speaker cabinets where internal space is limited.
Its lightweight construction helps reduce the overall weight of the loudspeaker while simplifying installation, transportation, and system assembly.
Flexible Operating-Voltage Options
The H2450 is available with different power-supply versions for international markets:
- 110V version: 90–135V AC
- 220V version: 180–265V AC
- Optional PFC version: 90–265V AC
The optional wide-voltage PFC version is recommended for touring systems, rental equipment, and export markets where mains voltage may fluctuate.
Protection and Reliability
The H2450 incorporates multiple protection functions to help maintain stable operation and protect the amplifier and connected loudspeaker components.
Protection functions include:
- Short-circuit protection
- DCP protection
- Overvoltage protection
- Undervoltage protection
- Overcurrent protection
- Overtemperature protection
Applications
- Active two-way PA speakers
- Powered full-range loudspeakers
- Active stage monitors
- Compact subwoofer and satellite systems
- Portable sound systems
- Installation loudspeakers
- Rental and touring audio equipment
- OEM and ODM powered speaker projects
Technical Specifications
| Item | Specification |
|---|---|
| Model | H2450 |
| Product Type | 2-Channel Class D DSP Amplifier Module |
| 8Ω Stereo Power | 2 × 450W |
| 4Ω Stereo Power | 2 × 500W |
| Frequency Response | 20Hz–20kHz ±1dB |
| THD+N, 1kHz, 1W, 8Ω | <0.1% |
| Signal-to-Noise Ratio, 1kHz | >100dB |
| Channel Separation, 1kHz | >80dB |
| Amplifier Class | Class D |
| Protection | Short, DCP, OVP, UVP, OCP, OTP |
| Operating Voltage | 110V version: 90–135V AC / 220V version: 180–265V AC |
| Optional PFC Version | 90–265V AC |
| Input Sensitivity | 0.77V |
| Input Impedance | 20kΩ |
| DSP Functions | Mute, Polarity, Gain, Delay, Limiter, EQ, Crossover |
| DSP Control | USB and RS-485 |
| Dimensions (W × H × D) | 332 × 160 × 100 mm |
| Packing Dimensions | 370 × 225 × 170 mm |
| Net Weight | 2.75 kg |
| Gross Weight | 3.45 kg |
Why Choose the H2450?
The H2450 combines two-channel Class D amplification, integrated DSP control, a compact installation format, and flexible operating-voltage options in one practical powered-speaker module.
Its lightweight construction and comprehensive protection system make it a reliable solution for professional active loudspeakers, portable PA systems, installation projects, and OEM or ODM speaker manufacturing.
