Niles Audio SI-2150, SI-2100, SI-250 manual Operation

2 Channel, Bridgable Power Amplifiers

Operation

Power Switch

The front panel switch is a master or “vacation” power switch. No matter which turn-on mode you have selected, the master power switch will turn off all circuitry including the sensing circuitry. If you will not be using the amplifier for an extended period of time, turn the master power switch “Off” (push button switch out). When you would like to return to normal operation, turn the switch “On” (push button switch in).

Important Notes: Equipment is not completely disconnected from main power source when power switch is in the “OFF” position.

Power LED

The power LED indicates that the AC cord is plugged into a working AC power receptacle and that the power switch is in the “On” position.

Bicolor Status LED

The bicolor Status LED illuminates “green” when the amplifier circuitry has been turned on by the Turn-On circuits, and illuminates “red” to indicate activation of the amplifier’s built-in protection circuitry due to either a fault in the wiring or the speaker, or with the Niles System Integration Amplifier® itself.

Level Adjustment Screws

The rear panel level adjustment screws allow you to adjust the level of the Niles System Integration Amplifier® relative to other amplifiers in your system. Use

a 1/8” slotted screwdriver to adjust the screws. If the Niles System Integration Amplifier® is the only amplifier in your system, leave the screws at their factory default setting (12:00 position).

Cleaning and Maintenance

The internal parts of the Niles System Integration Amplifier® are electronic and require no maintenance. Once a year it is appropriate to twist the RCA connectors on each input to remove corrosion and improve conductivity. You can clean the amplifier with soft cloth or paper towel dampened with water or a mild detergent. Do not use any spray-type, abrasive cleaners on the amplifier.

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