Inter-M - DPX-900S
1-Channel Digital Power Amplifier
Product Description
The Inter-M DPX-900S is a high-efficiency single-channel, 900W Class-D amplifier engineered for mission-critical public address, voice evacuation, and background music systems.
Built within a robust 2U rack-mount enclosure, the DPX-900S delivers reliable power across 70V and 100V line systems, supported by a high-output SMPS power supply for consistent performance. In emergency situations, the unit seamlessly switches to DC 24V operation, ensuring continued broadcast capability during power outages without requiring an external UPS.
A dedicated PRIORITY input automatically overrides all other audio sources to broadcast emergency messages. The amplifier also incorporates comprehensive fault protection, including safeguards against overheating, output short circuits, reverse voltage, and more.
The front panel provides intuitive LED indicators for input signal, clip, fault, protection, and power source (AC/DC/STBY), while additional features like remote contact control, audio link connectors, and a configurable buzzer offer enhanced system flexibility.
Manual
- Click to download: DPX-300Q_600D_900S_1200S_MANUAL_E-1.pdf
- 900W single-channel Class-D amplifier
- Dual AC/DC operation with 24V emergency backup
- Emergency PRIORITY input override
- Full suite of protection circuits for system safety
- Status LED indicators for input, clip, fault, and power source
- 2U rack-mountable metal chassis
- Audio link connector for signal daisy-chaining
- Remote AC power on/off control via contact
- Configurable internal buzzer for alerts
- High-efficiency SMPS power supply
| Description | DPX-900S |
|---|---|
| Rated Output Power | 900W × 1CH |
| Output Voltage / Impedance | 100V / 11.1Ω, 70V / 5.4Ω |
| Frequency Response | 50Hz ~ 20kHz (±3dB) |
| THD (Rated Power) | Less than 1% |
| Signal-to-Noise Ratio | More than 95dB (A-weighted) |
| Input Sensitivity / Impedance | 0 dBV / 20kΩ |
| Operating Power | |
| Power Consumption (1/8 Power) | 300W |
| Dimensions | 482(W) × 88(H) × 424(D) mm |
| Weight (Net) | 9.20kg |
| Weight (Gross) | 10.20kg |
