MB QUART MBQX-SUB-2 Installation Manual page 8

SUBWOOFER AMPLIFIER INSTALLATION FOR STAGE 3 and 5 SYSTEMS
This section covers the installation of the 400.1 subwoofer amplifier included in MBQX-SUB-2 in a Stage 3
or 5 system using the MBQX-SUB-ACC-1 accessory amp plate shown. Review amplifier settings on page 11
of this manual and esure both subwoofer amplifier settings are matched as close as possible.
1
MBQX-SUB-ACC-1
Begin by identifying the
amplifier mounting plate and
hardware. Stage 3 and 5
systems require the accessory
amp plate MBQX-SUB-ACC-1.
To Sub Amp 2
Inputs
4
To Sub Amp 1
Unplug the SUB RCA audio
input cables at the 400.1
amplifier on the dual amp plate
(Sub Amp 1). Connect splitters
and RCA extension as shown*.
*Note: Which RCA plug goes to left or right inputs
doesn't matter as the amp output is mono
7
Connect the RCA audio cable
extension to Sub Amp 2 inputs.
Position of right or left RCA
plugs does not matter because
the output signal is mono.
No
Nut/
Bolt
Here
2
Attach 400.1 amplifier to
mounting plate with included
hardware as indicated. Use
only three nuts/bolts due to
tube frame clearance.
From SUB
Route wiring to
OUT on
amp location
Source Unit
5
Inputs
Route power, speaker wiring
and RCA extension to amplifier
location (near frame tubes).
Place mounting clamps in initial
locations as shown.
8
Connect the speaker (Sub 2)
and power harness connectors
as shown.
8
3
Next, make initial LEVEL, LPF
crossover and SUBSONIC filter
settings as indicated on the
400.1 amplifier (Sub Amp 2).
● BOOST SWITCH - 0dB Position
● LEVEL DIAL - 3/4 of the way up from 9V
● LPF DIAL - Approximately 100Hz
● SUBSONIC DIAL - Approximately 31Hz
6
Place amplifier & plate into its
location. Attach the supplied
Phillips screws and 7/16" nuts
through the clamp holes and
tighten until amplifier is secure.
9
Zip tie the wiring neatly to
ensure no connectors come
loose. Avoid any moving parts
(such as steering mechanism),
moisture or heat sources.