13THE OUTLAW’S GUIDE TO THE SMS-1
you happen to be operating multiple SMS-1’s in your system, you can con-
nect the subwoofer output of your receiver or processor to the “Input” of
the rst SMS-1 and then connect the “Thru” output of that rst unit to the
“Input” of the second SMS-1.
CONTROL AND POWER
In addition to inputs and outputs, the SMS-1 oers several connections
for control, such as RS-232 serial connections, IR input, 12V trigger, and of
course the microphone connections.
Many receivers and processors today include 12V trigger outputs. The
SMS-1 provides a 12V trigger connection so that the unit can be powered
on and o by the receiver or processor. To connect the trigger, hook the
positive and negative wires of the trigger cable into the left two slots of
the connection block at the right end of the rear panel. You will also need
to turn on the trigger in the SMS-1’s menu, which we’ll tell you about on
page 18.
Many times, people will set up their equipment in hidden racks or
cabinets, which makes it dicult to get the infrared (IR) commands from
the remote control to the gear. An IR distribution system is the standard
solution, and in most cases that means sticking an IR emitter onto the IR
sensor window of each device. In some cases, the component will have a
rear IR input jack that can be connected to the IR distribution system. The
SMS-1 includes one of these IR inputs, located on the left side of the panel
(between the balanced inputs and the RS-232 ports).
An RS-232 port is not an uncommon sight on a surround processor or
even on a receiver, but on other components it is a bit more uncommon.
The SMS-1 has two RS-232 ports; two are needed because the SMS-1
includes provisions for having several units used together in a system
with a single master unit controlling the additional unit(s). The RS-232
output allows a master SMS-1 to pass commands to the next unit in line.
The RS-232 input can be used for several things. It can be connected to a
PC so that software updates can be installed. It can also be connected to
a control system (such as Crestron or AMX) so that the control system can
directly operate the SMS-1. If you want to set up such a control system on
your own, you can nd the RS-232 commands on page 26. Lastly, it can
accept commands sent from the RS-232 output of a master SMS-1 unit.
You will need to connect the microphone to the SMS-1 at some point,
and there are two options for doing that. The rst and most obvious is
the front panel microphone input, which is very convenient for hooking
up and then disconnecting. If you want to leave your microphone cable
hooked up permanently, though, you can use the rear panel microphone
input instead.
There’s one last connection that is pretty important: power. Leave the
power disconnected while wiring everything else up, but don’t forget to
plug the AC adapter in to the wall and in to the 12VDC power connection
at the right end of the rear panel before you crawl out from behind the
equipment rack.
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