Amplifier Wiring; Amplifier Settings - MB QUART MBQR-SUB-2 Installation Manual

AMPLIFIER WIRING

If you are connecting the amplifier into an existing Stage 2 system - either
MBQR-STG2-RAD-2 or MBQR-STG2-RC-1, simply plug in the unused power/ground
connector of the the mono amplifier into the Stage 2 harness. At the same time, if
you have (or will later install) optional illuminated MB Quart SR1-120RGB LED light
rings for the 8" compression horn front or rear speakers, connect the red/black wires
as well. See Figure 9-1 for the connection diagram.

AMPLIFIER SETTINGS

This manual provides the information for initial settings on the NA2-400.1 subwoofer amplifier accordingly.
TUNED PACKAGE
MBQR-SUB-2
STEP 1 - ADJUST MONO AMPLIFIER
Looking at the NA2-400.1 shown in Figure 9.2, make the following initial adjustments:
● BOOST - Switch to "0dB" position.
● LEVEL - Rotate control to halfway (pointing
up). This represents an input level that will
closely match the source unit's output at full
volume allowing the amplifier to achieve full
power without notable distortion.
● LPF - Rotate control to halfway (pointing up).
This is approximately 100HZ.
● SUBSONIC - Leave in the lowest (15Hz
position). If the subwoofer has trouble with
the lowest notes in your choice of music upon
testing, you can adjust up slightly about 1/4
turn.
If you are connecting the amplifier on its own -
please refer to the electrical connections outlined
Figure 9-1
in the NA2-400.1 installation manual available at
MBQuart.com.
It's recommended that you connect the amplifier's
power and ground wiring at the RZR bus bar
location as described on page 3.
Use at least 10 AWG power and ground wire. Be
sure to fuse the amplifier's main power wire with
a 30 ampere fuse placed close to the point of
connection at the bus bar. Connect the amplifier's
remote turn-on wire to your source unit's remote
turn-on output (typically a blue wire).
Depending on your chosen amplifier location if not
using one of the MB Quart vehicle-specific RZR
amplifier mounting plates, you may need to extend
the wire from the subwoofer to connect with the
amplifier.
TWO-CHANNEL AMPLIFIER
N/A
11
MONO AMPLIFIER
Bass Boost to 0dB
LPF to 100Hz
Figure 9-2
0dB