The Crown Com-Tech 210 is a two-channel power amplifier for fixed installation audio systems including public address, background music, and distributed sound applications. Its dual-mode architecture supports independent channel operation in either low-impedance (4/8 ohm) or constant voltage (70V/100V) configurations, delivering installation flexibility across demanding commercial environments.
## Technical Specifications
**Output Power**
• Stereo mode (4 ohms): 150W RMS
• Stereo mode (8 ohms): 110W RMS
• Bridge-Mono mode (8 ohms): 420W at 1 kHz / 270W (20 Hz–20 kHz)
• Bridge-Mono mode (16 ohms): 260W
• 70V Dual (per channel): 110W
• 70V Parallel-Mono: 210W
• 140V Bridge-Mono: 205W at 1 kHz / 200W (20 Hz–20 kHz)
**Audio Performance**
• Frequency response: ±0.1 dB (20 Hz to 20 kHz at 1W); ±0.5 dB (20 Hz to 20 kHz)
• Phase response: ±10 degrees (10 Hz to 20 kHz at 1W)
• Total harmonic distortion: 0.05% (20 Hz to 20 kHz); <0.1% at rated output
• Intermodulation distortion: 1000 (10–400 Hz at 8 ohms)
• Slew rate: >17 V/µs
**Input Specifications**
• Input sensitivity: 0.775V (both 8/4-ohm and 70V modes)
• Voltage gain: 32 dB ±1 dB (8/4-ohm); 39 dB ±1 dB (70V)
• Input impedance: 20 kΩ balanced; 10 kΩ unbalanced
• Maximum input level: 9 Vrms
**Load Impedance**
• Dual mode: 4–8 ohms
• Bridge-Mono: 8–16 ohms
• Parallel-Mono: 2–4 ohms
• 70V/100V: 2–16 ohms
**Power Requirements**
• AC mains: 120V/60 Hz (North America); 50/60 Hz versions available at 100V, 120V, 220V, 240V (±10%)
• Idle power draw: ≤35 watts
## Key Features
• Two independent channels with selectable operating modes
• Low-impedance and constant voltage output capability
• Stable operation across 20 Hz–20 kHz bandwidth
• Low distortion architecture for clean audio reproduction
• High damping factor ensures speaker control
## Typical Applications
• Public address and emergency notification systems
• Background music distribution
• Paging and announcement systems
• Commercial audio installations
## Compatibility & Integration
Dual-mode design enables integration into systems using standard 8/4-ohm passive speakers or 70V/100V constant voltage distribution networks. Balanced and unbalanced input connectors support flexible source connection.
