Sunfire Cinema Grand 200-seven, User Manual

Page: 8 / 20

User's Manual
8
Rear Panel Features
1. AUTO/ON/OFF Switch
Your Cinema Grand Ampli Þ er is
designed with an automatic on/off
circuit.
• In the AUTO-ON po si tion, the
am pli Þ er will automatically turn
on if an audio signal is pres-
ent at any of the inputs, or if it
receives a 12 VDC input volt-
age at the trigger inputs. The
ampli
Þ er will automatically turn
off after a few seconds if the
trigger voltage is removed, or
after approximately 30 minutes
in the ab sence of an audio
signal.
• In the ON position, the ampli-
Þ er is always on, regardless of
input signals or 12 VDC trigger.
• In the OFF position, the ampli-
Þ er is always off, regardless of
input signals or 12 VDC trigger.
2. 12 VDC Trigger Input
Although the AUTO-ON signal
sensing turn-on is ad e quate for most
installations, the 12 VDC trigger inputs
are offered as an op tion al way to turn
on the ampli
Þ er.
The Sun Þ re Theater Grand II, III
and IV Processors have a com pat i ble
12 VDC trigger output (see page 11).
This can be used to automatically turn
on the Cinema Grand when the The-
ater Grand Processor is turned on.
1/8" mono mini jacks are provided
for ease of installation, along with a
terminal strip to allow more
ß exibility
for custom-wired installations. The
terminal strip and both mini jacks are
internally connected in parallel, allow-
ing 'daisy chaining' to turn on multiple
ampli
Þ ers.
Any 1/8" miniplug mono or stereo
interconnect cable will suf Þ ce to con-
nect the trigger output of the Theater
Grand preamplifer to the ampli
Þ er.
Do not exceed 18 VDC on
this input. (CAU TION: Do
not connect AC line voltage
to this input!)
The voltage range for the trigger
input is from 5 to 18 VDC. The input
impedance is approximately 600
Ω
(20 mA @ 12V).
3. RCA Inputs
Your Cinema Grand Ampli Þ er has
three sets of inputs for each of the
seven chan nels. Two are un bal anced
RCA in puts and one is a balanced
XLR type.
The two RCA inputs for each chan-
nel are joined together internally, and
either one can be connected to the
cor re spond ing output of your pream-
pli
Þ er.
The second RCA input can be used
as a daisy-chaining output, sending
the pream pli
Þ er output signal to an-
other channel or to another ampli Þ er.
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