Crown 660A 4-Channel Power Amplifier The Crown? 660A is a six-channel amplifier for commercial and industrial audio. It provides 4-ohm and constant-voltage outputs (70V and 100V) on channels 1 through 4, and 4-ohm outputs on channels 5 and 6. The 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. Some applications include schools, hospitals, factories, restaurant/retail, houses of worship, fitness facilities, A/V boardrooms, 5.1 surround systems, courtrooms, and prisons. Typical uses are paging, background music, security and evacuation instructions. The amp is part of Crown?s Commercial Audio Series, which also includes mixers and mixeramps. 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. Features: Crown 660A Specifications Performance:
- Frequency Response (at 1W from 4-ohm tap): 70Hz to 19kHz +/-1dB
- Frequency Response (at line out): 20Hz to 20kHz +/-1dB
- Power Bandwidth (at 4-ohm tap, 2dB below maximum 1kHz power): 50Hz to 20kHz with < 0.5% THD
- Signal to Noise Ratio (ref. to rated power, master volume at minimum): 85dB
- DC Output Offset: < +/-5mV
- THD: Less than 0.5% at rated power at 1kHz
- Input Sensitivity (for full output at maximum gain): 800mV
- Input Impedance (nominal): 100 kilohms
- Crosstalk (all controls at "10"): -70dB at 1kHz
- Load Impedance:
- Ch. 1-4: 4 ohms and 70V/100V
- Ch. 5-6: 4 ohms
- AC Line Voltages Available:
- 100V 50/60Hz
- 120V 60Hz
- 220V 50/60Hz
- 230V 50/60Hz
- 240V 50/60Hz
- AC Voltage Tolerance: +10% / -20%
- Operating Temperature/Humidity: 0§C to 40§C at 95% relative humidity (non-condensing)
- Storage Temperature: -20§C to 85§C
Front Panel Controls and Indicators: Back Panel Controls and Connectors: Protection:
Current Limit Protection included Thermal Limit Protection: over-temperature thermal cutout DC-Fault Load Protection included Turn On/Turn Off: no thumps or pops Included Accessories:
- Power cord
- Detachable rack ears
- Screws for rack ears
- Non-touch cover for output connectors
- Phoenix-type connectors
- Spade lugs
Dimensions:
EIA Standard 19" rack mount width with rack ears, 3.5" height and 12.2" depth behind the mounting surface (not including non-touch cover). 4.1" high including feet. 13.9" deep from front of knobs to back of non-touch cover.
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