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INSTALLER-SELECTABLE OPTIONS
The SS741MG has several options that can be selected during installation.
Jumpers on the back of the control head, as well as on the printed circuit board
inside the amplifier case, allow the installer to select these various options. These
options should be set before installation of the unit.
Amplifier Cover Removal
CAUTION: DO NOT
OVER-TIGHTEN
SCREWS!
Remove the four
protruding
Philips head screws located on the
top
of the
amplifier unit, and the four
flush
Philips head screws on the
sides
of the amplifier
unit. DO NOT REMOVE THE FOUR
RECESSED
SCREWS ON THE
UNDERSIDE
OF THE AMPLIFIER! Lift the top cover upwards. This cover can
be removed completely from the amplifier unit.
Auxiliary Input Polarity
Applying a positive voltage to the green wire normally activates the auxiliary
input. To activate by connecting to ground (negative), move the “AUX” option
jumper from the “Pos. Switching” pins to the “Neg. Switching” pins in the amplifier
unit. (See Amplifier diagram below). The wiring diagram on page 10 shows two
connection examples.