QSC DCA1644 Digital Cinema Power Amplifier – 800W, Class AB+B, PowerLight™ Technology, High-Fidelity Audio Performance
Product Overview
The QSC DCA1644 is a high-performance Class AB+B digital cinema amplifier, designed for exceptional sound clarity and efficient power delivery. Featuring QSC’s exclusive PowerLight™ power supply, this amplifier ensures deep bass response, ultra-low distortion, and optimized power management for professional cinema applications.
With a stereo output of 250W per channel at 8Ω and 400W per channel at 4Ω, the DCA1644 excels in standard configurations. In bridged mono mode, it reaches 500W at 16Ω and 800W at 8Ω, delivering ample power for high-demand audio systems.
Key Features
- Class AB+B Amplification – Balances efficiency with low distortion for superior sound quality.
- Power Output: 250W per channel (8Ω), 400W per channel (4Ω), 800W bridged mono (8Ω).
- PowerLight™ Technology – Enhances bass response and improves efficiency.
- Ultra-Low Distortion & Hum-Free Noise Floor – Ensures crisp, distortion-free audio.
- Compact 3.5-Inch Profile – Ideal for rack-mounted installations.
- DataPort Interface – Seamlessly integrates with QSC DCP Digital Cinema Processors and DCM Digital Cinema Monitors.
- Patented Output Averaging™ Short Circuit Protection – Provides reliable operation in professional environments.
- Variable-Speed Fan Cooling – Back-to-front airflow ensures optimal temperature regulation.
- Safety-Shrouded Barrier Strip Output Connectors – Secure, high-quality connectivity for professional setups.
- LED Status Indicators – Provides real-time metering and operational monitoring.
Technical Specifications
| Specification | Details |
|---|---|
| Power Output (8Ω, 20Hz–20kHz, 0.05% THD) | 250W per channel |
| Power Output (4Ω, 20Hz–20kHz, 0.1% THD) | 400W per channel |
| Power Output (Bridged Mono, 16Ω, 20Hz–20kHz, 0.1% THD) | 500W |
| Power Output (Bridged Mono, 8Ω, 20Hz–20kHz, 0.1% THD) | 800W |
| Signal-to-Noise Ratio (20Hz–20kHz, unweighted) | >105 dB |
| Input Sensitivity (Full Rated Power @ 8Ω) | 1.12V RMS |
| Input Sensitivity (Full Rated Power @ 4Ω) | 1.0V RMS |
| Output Circuitry | Class AB+B |
| Distortion (SMPTE-IM) | <0.01% |
| Frequency Response (LF Filter Off) | 20Hz–20kHz ±0.2 dB |
| Damping Factor (1kHz and Below) | >500 |
| Input Impedance | 10kΩ unbalanced, 20kΩ balanced |
| Cooling System | Variable-speed fan, rear-to-front airflow |
| Connectors (Each Channel) | Input: 3-pin detachable terminal blocks; Output: Safety-shrouded barrier strip |
| Voltage Gain (8Ω) | 40x (32 dB) |
| Protection Features | Short circuit, open circuit, thermal, ultrasonic, and RF protection |
Box Dimensions & Weight
- Dimensions: 3.5" H x 19" W x 14" D (standard rack-compatible)
- Weight: 21 lbs
Ideal Applications
- Professional Cinemas
- Home Theater Systems
- Commercial Audio Installations
