3
WIRING CONNECTIONS & SETTINGS
It is important to read this manual thoroughly before starting your installation and always plan accordingly.
Before installing, disconnect the negative (ground) wire from the vehicle’s battery to avoid damage to the
vehicle or yourself. Following all guidelines will help provide years of enjoyment with your STEG amplifier.
Power Supply Terminal
Œ
Ground (GND):
The ground terminal must be connected to a metal part of the vehicle with ground
Ÿ
plane back to the main battery ground attachment point (a.k.a. chassis ground). This wire should be as
short as possible, but no longer than 2ft (60cm), with minimum gauge of 4AWG. The ground wire
should be terminated with a ground specific or ring terminal and securely bolted to the vehicle with
star or lock washer and nut to prevent from coming loose. The chassis ground connection point
should be scuffed to the bare metal.
Remote Turn-on (REM):
If the source unit has a remote output wire or if a switched ignition wire is
Ÿ
available, connect it to the REM terminal for turning on the amplifier.
Ÿ
Power (+12V):
The co12V power connection must be made at the vehicle main battery,
securely connected with a ring terminal and protected with an in-line fuse within 18in (45cm) from the
positive battery terminal. The M.MSK130.4 requires a 70A fuse and a minimum power wire gauge of
4AWG, while the M.MSK200.2 requires a 60A fuse with 4AWG wire. Do not install the fuse until all other
system connections have been made.
Fuses:
These ATC fuses are to protect the amplifier and must be inserted for operation. When replacing
fuses, check for system wiring faults and always use the specified value for each fuse. The M.MSK130.4
model requires two 35A fuses, while the M.MSK200.2 requires two 30A fuses.
Speaker Output Terminal:
Each (+) and (-) terminal pair per channel is for connecting the amplifier's
Ž
output to speaker(s) or subwoofer(s). Make sure to observe correct polarity and total impedance per
channel. The minimum nominal impedance is 2
Ω
per channel, or 4
Ω
for bridged connections.
RCA Inputs (INPUT):
These RCA jacks are for left and right channel input signal connections from the
source. Use quality interconnects to ensure stable connection and minimize the possibility for induced
noise. Each channel requires a source signal input connection to provide output.
Turn-on Mode Select:
This switch is for selecting which method is used for turning on the amplifier. The
default setting is for a sw12V wire connected to the REM terminal. If a wired trigger is
unavailable, select either DC-offset or Audio signal detection for the appropriate automatic turn-on
mode. While auto turn-on will work in most applications, there may be some cases were a +12V trigger is
needed for satisfactory results.
Power/Protect LED (PWR/PRO):
This LED indicates the amplifer status. Blue indicates the amplifier is on
‘
and in normal operation. Red indicates the amplifier is in protection mode, due to overheating, under-
voltage or output short circuit condition.
M.MSK130.4
M.MSK200.2
‘
‘
Œ
Remote
Turn-on
12V
<18in (45cm)
Chassis
Ground
4AWG
(min)
<2ft
(45cm)
Remote
Turn-on
12V
<18in (45cm)
Chassis
Ground
4AWG
(min)
<2ft
(45cm)
Ž
Œ
Ž