Front Panel Controls - Inter-m R-150 Operating Manual

R-150/R-300/R-500

Front Panel Controls

1. Power Switch
Pushing this switch up swiches the unit on. Pushing it down swiches the unit off.
2. Power Indicator LED
When the unit is switched on, the Power LED will glow steadily.
3. Protection Indicators
There are two protection indicator LEDs – one LED for Channel 1 of the amplifier
and one LED for Channel 2. These LEDs indicate the state of the amplifier's
protection circuitry. When the Protection LED is on (illuminated), the protection
circuitry is active, indicating that the unit is not operating normally. This is typically
due to overheating or power limiting. Please check the Input and Output
condition of the amplifier.
(Note that the Protection Indicators light for approximately six seconds when the
amplifier is first switched on.)
The amplifier offers the following modes of protection:
Thermal Protection: Activates when internal operating temperature exceeds 100˚
Celsius.
Compressor/Limiting: When maximum output power is reached, output level will
be reduced to avoid distortion.
DC Fault Protection: DC detection circuitry shuts the speaker output when a DC
fault voltage of ±3dB or greater is detected.
Power On/Off Muting: Audio to speakers is delayed for several seconds on
powering on and off to reduce potential speaker damage from transients.
Reference Series Amplifier
7