H1-450D 450W Single-Channel Class D Amplifier Module for Active Speakers
Product Overview
The H1-450D is a compact single-channel Class D DSP amplifier module designed for active speakers, full-range loudspeakers, low-profile subwoofers, stage monitors, and professional PA systems. It integrates a switch-mode power supply, Class D amplifier, and DSP control system into one lightweight plate amplifier module.
Delivering 1 × 450W at 8Ω and 1 × 500W at 4Ω, the H1-450D provides clean, stable, and efficient output for powered speaker applications. Its slim plate chassis and low weight make it easy to install into different speaker cabinet designs, especially for OEM and ODM active loudspeaker projects.
The built-in DSP allows users to adjust key audio parameters, including Mute, Polarity, Gain, Delay, Limiter, EQ, and Crossover. DSP settings can be controlled through USB or RS-485, allowing convenient PC-based tuning and remote system management.
With high-efficiency Class D technology, multiple operating-voltage options, and comprehensive protection circuits, the H1-450D is a reliable amplifier solution for portable PA systems, fixed installations, active speakers, and custom powered speaker projects.
Key Features
450W Single-Channel Output
The H1-450D delivers:
- 1 × 450W at 8Ω
- 1 × 500W at 4Ω
It provides stable and efficient power for active full-range speakers, compact subwoofers, stage monitors, and professional powered loudspeaker systems.
Compact Plate-Amplifier Design
The slim and lightweight plate chassis allows easy installation into active speaker cabinets. It helps reduce cabinet space, simplify internal wiring, and improve production efficiency.
Integrated DSP Control
The built-in DSP supports flexible audio processing functions, including:
- Mute
- Polarity
- Gain
- Delay
- Limiter
- Equalizer
- Crossover
This allows precise tuning for different speaker designs and acoustic environments.
USB and RS-485 Remote Control
The H1-450D supports PC control through USB and RS-485 interfaces. Users can adjust DSP parameters, manage presets, and fine-tune system performance through software.
High-Efficiency Class D Technology
Advanced Class D amplification provides strong output with low heat generation and reduced energy consumption. It is suitable for continuous professional operation in active speaker systems.
Multiple Operating-Voltage Options
The H1-450D is available in different voltage versions for international markets:
- 110V Version: 90–135 VAC
- 220V Version: 180–265 VAC
- PFC Version: 90–265 VAC
Comprehensive Protection System
Built-in protection functions help ensure safe and reliable operation:
- Short-circuit protection
- DC protection
- Over-voltage protection
- Under-voltage protection
- Over-current protection
- Over-temperature protection
Why Choose the H1-450D?
The H1-450D combines 450W output power, compact plate-amplifier design, integrated DSP control, USB and RS-485 connectivity, and reliable protection in one module. It is an ideal amplifier solution for active speakers, low-profile subwoofers, portable PA systems, fixed installations, and OEM/ODM powered loudspeaker projects.
Applications
- Active full-range speakers
- Compact active subwoofers
- Stage monitors
- Portable PA systems
- DJ and live event sound systems
- Clubs, theaters, and houses of worship
- Fixed sound installation projects
- OEM and ODM active speaker manufacturing
Technical Specifications
| Specification | H1-450D |
|---|---|
| Model | H1-450D |
| Output Power at 8Ω | 1 × 450W |
| Output Power at 4Ω | 1 × 500W |
| Frequency Response | 20Hz–20kHz, ±1dB |
| THD+N, 1kHz, 1W, 8Ω | <0.1% |
| Signal-to-Noise Ratio, 1kHz | >100dB |
| Amplifier Class | Class D |
| Protection | Short Circuit, DCP, OVP, UVP, OCP, OTP |
| Operating Voltage | 110V Version: 90–135 VAC / 220V Version: 180–265 VAC / PFC Version: 90–265 VAC |
| Input Sensitivity | 1V |
| Input Impedance | 20kΩ |
| DSP Functions | Mute, Polarity, Gain, Delay, Limiter, EQ, Crossover |
| DSP Control | USB and RS-485 |
| Dimensions (W × H × D) | 332 × 142 × 70mm |
| Packing Dimensions | 370 × 160 × 100mm |
| Net Weight | 1.7kg |
| Gross Weight | 2.7kg |
Short Description
The H1-450D is a compact 450W single-channel Class D DSP amplifier module designed for active speakers, compact subwoofers, and professional PA systems. It features built-in DSP processing, USB and RS-485 control, multiple voltage options, and comprehensive protection, making it suitable for professional audio applications and OEM/ODM powered speaker projects.
We have two different size for the H1 series plate amplifier. The H1S series is the smaller size
