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280 A

Power Amplifier, Stereo, 80W per Channel @ 4 Ohms or 70V/100V

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280A 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.

Minimum Load Impedance: 

  • 100V output: 160 ohms.
  • 70V output: 80 ohms.
  • 4-ohm output: 4/8 ohms.
  • 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
CROWN 3 YEAR WARRANTY

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