Mackie SRM450 User's Manual And Warranty Registration page 13

Wherever possible, connect all of your
equipment to the same electrical circuit.
This will help reduce the possibility of a
ground loop problem causing an annoying
hum in your speakers.
Low power components such as tape
decks, mixers, effects processors and CD
players should be connected to the same
outlet as the SRM450s. Use fused power
strips as shown in the diagram below. Make
sure that the total current draw of your
components does not exceed the capability
of the outlets and power strips.
For the US 120 V model:
A maximum of five SRM450s can be
connected per 15A service.
This allows each SRM450 to be safely
operated at its maximum level.
When turning your system on, turn on
the SRM450s last. This will stop any turn-
on thumps and bangs from your source
equipment being amplified.
When turning off your system, turn off
the SRM450s first. This will prevent any
turn-off thumps and bangs from your
source equipment being amplified.
may even be faced with 2-wire outlets that
are missing the third safety ground pin. It's
a good idea to have a three-wire AC outlet
tester in your toolbox so you can check the
outlets yourself to make sure they are wired
correctly. These testers will tell you if the
polarity of the hot and neutral wires is re-
versed and if the safety ground is
disconnected.
SRM450
SRM450: AC CONNECTIONS
When setting up for a
show, often you are plug-
ging into an AC power
distribution system you
know nothing about. You
Don't use an outlet if it is
wired improperly! This
is to protect yourself as
well as your equipment.
Never remove the
ground pin on the power
cord of the SRM450 or
any other component.
This is very dangerous.
SRM450
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