RNA2550

Front Panel Features

• AC Power Switch
  • Controls the amplifier’s main power.
  • The Power LED illuminates when the amplifier is ON, including Standby and Run modes.
• Protect LED (Red, Each Channel)
  • Indicates that the channel is in Protect mode and the speakers are disconnected by the output relay.
  • The LED glows bright red when the amplifier is muted.
  • This normally occurs when powering the amplifier ON or OFF. If it remains active during operation, it may indicate overheating or another protection condition.
• Clip LED (Orange, Each Channel)
  • Flashes bright orange when clipping occurs.
  • The intensity and duration indicate the degree of clipping.
• -4 dB LED (Green, Each Channel)
  • Indicates that the channel output has reached the upper -4 dB level.
  • Provides a warning that the signal is approaching clipping.
• -7 / -10 / -15 dB LEDs (Green, Each Channel)
  • Illuminate when the channel output is operating between -4 dB and -15 dB below clipping.
  • This range represents the amplifier’s normal and safe operating area.
• SIG LED (Green, Each Channel)
  • Indicates the presence of an audio signal on each channel.
  • If the LED remains illuminated without an input signal, it may indicate interference or another abnormal condition.
• Power LED (Blue)
  • Illuminates when the amplifier is powered on.
  • The LED dims significantly when the amplifier is in Standby mode.
• Gain Control
  • Provides independent volume control for each amplifier channel.
• Optional Mounting Handles
  • Handles are supplied with the required Phillips-head screws.
  • Mount the handles using the round holes located inside the rack-mounting ears.
• Ventilation Slots
  • The amplifier draws cool air through the right side and exhausts hot air through the left side.
  • This airflow helps prevent overheating inside the rack.
  • During heavy operation, the cooling fans automatically increase speed to improve heat dissipation.