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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. 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 Reponse (at 1 watt from 4-ohm tap): 70 Hz to 19 kHz +/- 1 dB. Frequency Response (at line out): 20 Hz to 20 kHz +/- 1 dB. Power Bandwidth (at 4-ohm tap, 2 dB below maxium 1 kHz power): 50 Hz to 20 kHz 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 1 kHz. Input Sensitivity (for full output at maximum gain): 800 mV. Input Impedance (nominal): 100 kilohms. Crosstalk (all controls at “10”): –70 dB at 1kHz. Line Output Level (nominal): 1V into 10 kilohms. AC Line Voltages Available: 100V 50/60 Hz
120V 60 Hz
220V 50/60 Hz
230V 50/60 Hz
240V 50/60 Hz Operating Temperature/Humidity: 0° C to 40° C at 95% relative humidity (non-condensing). Storage Temperature: –20° C to 85° C.Frequency Reponse (at 1 watt from 4-ohm tap): 70 Hz to 19 kHz +/- 1 dB.
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