Crown 660A Power Amplifier
Commercial Grade Amplifier with 6 Inputs, 60 Watts X 6 Zones
The Crown 660A 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 - geared with contractors in mind for commercial installed sound applications.
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. 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. Crown 660A Commercial Grade Amplifier Features : - 660A has six inputs and six 60W ( into 4 Ohms) Power Amplifier channels for multi-zone systems. It can drive different types of speakers in different areas of a facility. Ideal for commercial and industrial use
- 4-ohm, 70V or 100V operation on channels 1-4, 4-ohm operation on channels 5 and 6
- Independent volume, bass (100Hz) and treble (10kHz) controls
- Frequency Response (at line out) 20Hz to 20kHz
- 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
- Includes detachable rack ears with screws, non-touch cover for output connectors, spade lugs, Phoenix-type connectors and power cord
- Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications
Crown 660A Commercial Grade Amplifier Applications : - 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.
- Can be used for 5.1 channel home theater
Crown 660A Commercial Grade Amplifier 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.
Front Panel Controls and Indicators : - Power Switch: Pushbutton on-off switch. The power switch does not affect the 24V DC auxiliary power input.
- Power Indicator: Blue LED indicates power on.
- Output
Signal Presence Indicator: Green LED, one for each output channel,
illuminates when output signal level exceeds 100 mV (45 dB below full
power) from the 4-ohm tap.
- Clip Indicators: Red LED, one per output channel.
- Illuminates at threshold of audible distortion.
- Master Volume Controls: One per output channel.
- Detented potentiometer with knob.
- Tone Controls: Bass and Treble non-detented
- potentiometers on each channel. Bass ±10 dB at
- 100 Hz, Treble ±10 dB at 10 kHz.
Back Panel Controls and Connectors : - Reset Switch: Resets the circuit breaker that protects the power supply. 220/230/240V units have a fuse instead.
- AC Power Inlet: Detachable IEC.
- Auxiliary Power Input (not in 660A): 2-position terminal strip for 24 VDC (±10%) backup power.
- Accepts up to 14 AWG terminal forks.
- Amplifier
Outputs Connectors: One per channel, 4-position terminal strip with COM
(Common), 4 ohms, 70V and 100V terminals. Accepts up to 10 AWG terminal
forks. Non-touch cover included.
Crown 660A Construction : - Cooling: Convection Cooled
- Front Panel: Cast aluminum with integrated handles.
- Protection:
Amplifier is protected against reactive loads, faults and shorts. If
one channel experiences a catastrophic failure, the entire amplifier
will shut down.
- Dimensions w/ Rack Ears (W x H x D): 19" x 3.5" x 12.2"
- Weight: 30.3 lbs net, 36 lbs shipping
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