User's Manual

Rear Panel Features (Signature Edition shown)

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1. AUTO/ON/OFF Switch

Your Sunfire amplifier is designed with an automatic on/off circuit.

•In the AUTO-ON position, the amplifier will automatically turn on if an audio signal is present at the right input, or if it receives a 12VDC input trigger voltage at the 12VDC inputs. The amplifier will automatically turn off after a few seconds if the 12V trigger voltage is removed, or after approxi- mately 30 minutes in the absence of an audio signal.

•In the ON position, the amplifier is always on, regardless of input signals or 12VDC trigger.

•In the OFF position, the amplifier is always off, regardless of input signals or 12VDC trigger.

2.12VDC Trigger Input

Although the signal sensing turn-on is adequate for most installations, the 12VDC trigger inputs are offered as an optional way to turn on the amplifier.

The Sunfire Theater Grand preamplifier has a compatible 12VDC trigger output. When the Theater Grand is turned on, the Sunfire amplifier will also turn on, even when the volume is turned down.

1/8" mono mini jacks are provided for

ease of installation, along with a terminal strip to allow more flexibility for custom-wired installations. The terminal strip and both the 1/8" mini jacks are connected in parallel, allowing 'daisy chaining' to turn on multiple amplifiers.

Any 1/8" mono to mono (two-wire) interconnect cable will suffice to connect the 12V trigger output from the Sunfire Theater Grand preamplifier to the amplifier.

The voltage range for the 12V trigger input is 5 to 18 Volts DC. Do not exceed 18 volts on this input. (CAUTION: Do not connect

AC line voltage to this input!)

The input impedance of the 12V trigger input is approximately 600Ω (20mA @ 12V).

3. RCA Inputs

Your Sunfire amplifier has three sets of inputs for each of the channels. Two are unbalanced RCA inputs and one is a balanced XLR type.

The two RCA inputs for each channel are joined together internally and either one can be connected to the corresponding output of your preamplifier. The other can be used as a daisy-chaining output, sending the preampli- fier output signal to another channel or to another amplifier.

12Rear Panel Features