Sunfire cinema grand Series II - Manual (Page 12)

12
User's Manual
Rear Panel Features
(Signature Edition shown)
1 2 3 4 6
7 8
5
9
Rear Panel Features
1. AUTO/ON/OFF Switch
Your Cinema Grand 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 front or
center inputs, 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
approximately 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 preamplifer
has a compatible 12VDC trigger output. When
the Theater Grand is turned on, the Cinema
Grand 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 internally 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 Theater Grand
preamplifer 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 600 Ω (20mA @ 12V).
3. RCA Inputs
Your Cinema Grand Amplifier has three
sets of inputs for each of the five 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.