Crowncca 280a frgh lightbox
Imagens Grandes

280A (Descontinuado)

Amplificador de potência de 80W para sistemas de duas zonas

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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.

For more commercial amplifier options, check out the JBL Commercial Series

Recommended for: Comercial.

  • 180A, 280A and 1160A have 1 or 2 inputs, 1 or 2 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
Resposta de Frequência (at 1 watt from 4-ohm tap): 70 Hz to 19 kHz +/-1 dB, (at line out): 20 Hz to 20 kHz +/- 1 dB
Power Bandwidth (at 4-ohm tap, 2 dB below maximum 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 miximum gain): 800 mV
Input Impedance (nominal) 100 kilohms
Minimum Load Impedance 100V ouput: 160 ohms, 70V output: 80 ohms, 4-ohm output: 4/8 ohms
Crosstalk (all controls at "10") -70 dB at 1 kHz
Line Output Level (nominal) 1V into 10 kilohms
AC Line Voltages Available 100V 50/60 Hz, 120V 60Hz, 220V 50/60 Hz, 230V 50/60 Hz, 240V 50/60 Hz
Operating Temperature/Humidity 0 degrees C to 40 degrees C at 95% relative humidity (non-condensing)
Storage Temperature -20 degrees C to 85 degrees C
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