Crown 280A Power Amplifier Stereo 80W 280A 2 inputs dual 80W two-zone System 

The Crown 180A, 280A, 1160A and 660A are high-value amplifiers for commercial and industrial audio. They provide 4-ohm and constant-voltage outputs (70V and 100V). The 660A, a six-channel amplifier, provides 4-ohm and constant-voltage outputs (70V and 100V) on channels 1 through 4, and 4-ohm outpus on channels 5 and 6. The amps are part of Crown's Commercial Audio Series, which also includes mixers and mixer-amps. These low-cost units provide all necessary features in a simple building-block format. The sound system can be upgraded as a facility expands. For example, you can add more mixers for more inputs, or add more power amps (or mixer-amps) to handle more zones.

Some applications include schools, hospitals, factories, restaurant/retail, houses of worship, fitness facilities, A/V boardrooms, prisons, and small offices. Typical uses are paging, background music, security and evacuation instructions.

The amplifiers vary in their number of inputs, number of outputs, and power range:

• 180A has 1 input and one 80W power amplifier for single-zone systems.
• 280A has 2 inputs and dual 80W power amplifiers for two-zone systems.
• 1160A has 1 input and one 160W power amplifier for single-zone systems.
• 660A has six inputs and six 60W power amplifier channels for multi-zone systems. It can drive different types of speakers in different areas of a facility.

Features

• 180A, 280A and 1160A have 1 or 2 inputs, 1 or 2 amplifier output channels. 660A has six inputs and six amplifier output channels
• Ideal for commercial and industrial use
• Balanced Phoenix-type line inputs; touch-proofed screw-terminal speaker outputs
• Advanced protection system includes output current limiting, DC protection, circuit breaker/fuse, and thermal protection
• Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications

Specifications

• Frequency Response (at 1 watt from 4-ohm tap): 70Hz to 19kHz +/-1dB
• Frequency Response (at line out): 20Hz to 20kHz +/-1dB
• Power Bandwidth (at 4-ohm tap, 2 dB below maximum 1kHz power): 50Hz to 20kHz with <0.5% THD
• Signal to Noise Ratio: (ref. to rated power, master volume at minimum): 85 dB
• DC Output Offset: <+/-5 mV
• THD: Less than 0.5% at rated power at 1kHz
• Input Sensitivity (for full output at maximum gain): 800 mV
• Input Impedance (nominal): 100 kilohms
• Crosstalk (all controls at "10"): -70dB at 1kHz
• Line Output Level (nominal): 1V into 10 kilohms
• Minimum guaranteed power per channel into 4 ohms or 70V/100V output: 80W
• Dimensions (W x H x D): 19" x 3.5" x 12.2"
• Weight: 25.3 lbs (net), 30.3 lbs (shipping)