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THE BEAUTY OF POWER | US SERIES AMPLIFIERS |
NOTE: Match the pin designations printed next to the output connectors on rear panel to ensure proper connections.
9.Circuit breaker
The circuit breaker protects the amplifier from faults at the AC supply and serves as protection when the amplifier fails.
If the circuit breaker trips, cutting AC power supply to your amplifier, it may indicate a serious malfunction or failure. Wait for the circuit breaker to cool before resetting it by simply pressing the reset knob. If the circuit breaker repeatedly trips, especially when there is no signal on the inputs or outputs, this indicates a failure of your amplifier. DISCONNECT the power cord from the amplifier immediately and contact an authorized
There are rare instances when the circuit breaker acts on a constant heavy overload with a very low imped- ance load connected to amplifier, protecting your amplifier against such improper usage. In such cases you need to check and correct your load (loudspeak- ers) to provide for the proper load impedance, and/or reduce output signal.
10. AC input
IEC connector for the AC power cable. Connect the supplied
NOTE: Never disconnect the EARTH pin from the AC connection. It will defeat safety measures used in your power amplifier and void the warranty.
PROTECTION
The PROTECT LEDs on the front panel illuminate when the protection is active during the
Initial
NOTE: It is normal for the PROTECT LED to fade gradually after the amplifier is turned OFF.
Thermal Protection: Excessive
which has the overheating heatsink, except the US- 1200 where both channels will be muted. The thermal protection will automatically restore to normal opera- tion mode automatically once the heatsink tempera- ture drops to a safe level.
NOTE: If the thermal protection constantly activates, check the impedance of your loud- speakers and the condition of the air filters on front of the amplifier. The loudspeakers impedance must not be lower than what is specified in this manual for
NOTE: Make sure there is adequate air access