Place terminal in a secure
position so that it won’t
accidentally contact the
negative battery post
For power cable runs over 20 feet,
8ga is recommended.
Power cable size
and fusing
It is critical to use the proper power
and ground cable. Select the size
listed here for your amplier model.
Always use high quality copper
cable. Visit our website for multi amp
system cable recommendations.
Be sure to use the proper fuse size
for each model. Some models require
an external fuse.
Properly route power,
speaker and RCA cables
through the vehicle.
Choose a mounting location
that will provide adequate air
ventilation. Mount the amplier to
a secure surface. Do not mount
the amplier upside down.
Attach the chassis ground, +12V and remote wire.
It is important to make sure these connections are
very secure.
Bare metal
Connect the RCA cables to
the INPUT connectors. The
OUTPUT can be used to
provide input for a second
amplier.
Connect the power cable to the
positive battery terminal. The
power cable must be fused
within 18 inches of the battery
terminal.
Re-connect the negative
battery terminal making sure it
is securely tightened.
Connect the speaker cables to
the speaker output connectors.
Follow the diagram below
that best ts your speaker
conguration.
The chassis ground connection
is critical to the performance
of the amplier. Choose a
location that is close to the
amplier. Completely scrape
away the paint and use a nut
and bolt if possible.
DO NOT USE AN EXISTING
FACTORY BOLT!
Disconnect
Negative Battery
Terminal
Run Cables
Mount Amplier
Power
Connection
Signal Input
Connection
Positive Battery
Connection
Re-connect
Negative Battery
Terminal
Speaker
Connections
Chassis Ground
Be prepared to disarm your vehicle’s alarm and
to enter your radio / source unit code.
Installation
Before you start
CAUTION
Many new and factory radios require a reset code when
disconnected from battery power. This is an anti-theft
feature. Before unplugging power, you must determine if
your radio/source unit requires a reset code. Check the
operation manual for your vehicle or contact the dealer.
1
2
3
5
6
9
10
84
Turn the GAIN control completely
counter-clockwise to minimum.
Gain Control
7
10ga
Model Fuse Size Cable Size
NA2-400.2
NA2-320.4
NA2-400.1
NA2-500.5
1-30A atc
1-30A atc
1-30A atc
1-40A atc
Speaker Positive - Gray
Left Positive - White
Left Negative - White / Black
Left Front Positive - White
Left Front Negative - White / Black
Right Positive - Gray
Right Negative - Gray / Black
Left Positive - White
Left Negative - White / Black
Right Positive - Gray
Right Negative - Gray / Black
Right Front Positive - Gray
Right Front Negative - Gray / Black
Left Rear Positive - Green
Left Rear Negative - Green / Black
Right Rear Positive - Purple
Right Rear Negative - Purple / Black
Ground - Black
Remote - Blue
+12V - Red
Ground - Black
Remote - Blue
+12V - Red
Left Front Positive - White
Left Front Negative - White / Black
Right Front Positive - Gray
Right Front Negative - Gray / Black
Left Rear Positive - Green
Left Rear Negative - Green / Black
Right Rear Positive - Purple
Right Rear Negative - Purple / Black
Speaker Negative - Gray / Black
Speaker Positive - Gray
Speaker Negative - Gray / Black
Speaker Positive - Gray
Left Positive - White
Left Negative - White / Black
Left Front Positive - White
Left Front Negative - White / Black
Right Positive - Gray
Right Negative - Gray / Black
Left Positive - White
Left Negative - White / Black
Right Positive - Gray
Right Negative - Gray / Black
Right Front Positive - Gray
Right Front Negative - Gray / Black
Left Rear Positive - Green
Left Rear Negative - Green / Black
Right Rear Positive - Purple
Right Rear Negative - Purple / Black
Ground - Black
Remote - Blue
+12V - Red
Ground - Black
Remote - Blue
+12V - Red
Left Front Positive - White
Left Front Negative - White / Black
Right Front Positive - Gray
Right Front Negative - Gray / Black
Left Rear Positive - Green
Left Rear Negative - Green / Black
Right Rear Positive - Purple
Right Rear Negative - Purple / Black
Speaker Negative - Gray / Black
Speaker Positive - Gray
Speaker Negative - Gray / Black
FRONT
L
R
REAR
L
R
INPUT
L
R
GAIN
MIN MAX
LPF
50Hz 150Hz
SUBSONIC
15Hz 50Hz
SUBSONIC
15Hz 300Hz
FRONT
GAIN
MIN MAX
REAR
GAIN
MIN MAX
BOOST
0dB 12dB
X-OVER
LPF FULL
FRONT
X-OVER
HPF FULL
REAR
X-OVER
HPF FULL
NA2-400.1 / NA2-500.5
NA2-400.2
NA2-320.4 / NA2-500.5
Setup
Quick Start
Installation Guide
The illustrations below describe the various controls. Refer to
the illustration that matches your amplier.
The gain control purpose is to match
the output of your source signal to the
amplier. Refer to the section B below for
detailed instructions.
This switch will set the amplier to have
a full frequency output or to lter out high
or low frequencies. The NA1-400.2 offers
either a bandpass or a high pass lter.
The Boost Switch will increase the signal
12dB at 45Hz. Be aware this setting can
cause distortion if the gain is not set
properly.
1. If possible, with the source unit off, conrm that the primary volume control is
turned down (counter clockwise).
2. Turn on the source unit (CD, or MP3 player). Re-conrm that the volume is
turned down. Make sure the source unit controls; balance, fader, bass and
treble are all set to center or “0” adjustment. Make sure that the green LED on
the end of the amplier is illuminated.
3. Play a clean musical selection of which you are very familiar. CD is preferred.
Do not use radio signals for level setting. Hit play and start turning the volume
of the source unit up.
4. Stop increasing the source unit volume when you reach 3/4 (about 75%) or until
you hear speakers begin to slightly start producing distortion.
5. Increase the amplier gain (clockwise) until distortion is heard, then back
the level down (counter clockwise) until the distortion is eliminated. Small
adjustments may need to be made to balance the levels of multiple ampliers.
Settings
A
This is a critical step to insure your amplier
is properly adjusted to match the signal
output level of your source unit.
THIS IS NOT A VOLUME CONTROL!
Level Setting
B
WARRANTY
Maxxsonics USA Inc. warrants this product, to the original consumer purchaser, to be free from
defects in material and workmanship for a period of one (1) year from the date of purchase.
Maxxsonics USA Inc. will, at it’s discretion, repair or replace defective products during the warranty
period. Components that prove to be defective in materials and workmanship under proper installation
and use must be returned to the original authorized Maxxsonics USA Inc. retailer from where it was
purchased. A photocopy of the original receipt must accompany the product being returned. The
costs associated with removal, re-installation and freight are not the responsibility of Maxxsonics
USA Inc. This warranty is limited to defective parts and specically excludes any incidental or
consequential damages connected therewith. To view the full warranty, please visit the website.
The information contained within this document is intended to offer some basic guidelines
for a few of the most common installations. More complex audio systems should be
installed by a competent professional. Additional installation information available at
www.maxxsonics.com
MBQuart products are designed and engineered in the USA by
www.maxxsonics.com
Congratulations on your choice of a MBQuart amplier.
This “Quick Start Installation” guide is meant to help you
“hook up” and play music. For more detailed information,
on system setting, speaker and subwoofer conguration
and full specications by model visit the website,
http://mbquart.com/manuals.html
MBQ NA2 QSG 01 - rev2
NA2-400.2
NA2-320.4
NA2-400.1
NA2-500.5
FRONT
L
R
REAR
L
R
INPUT
L
R
GAIN
MIN MAX
LPF
50Hz 150Hz
SUBSONIC
15Hz 50Hz
SUBSONIC
15Hz 300Hz
FRONT
GAIN
MIN MAX
REAR
GAIN
MIN MAX
BOOST
0dB 12dB
X-OVER
LPF FULL
FRONT
X-OVER
HPF FULL
REAR
X-OVER
HPF FULL
INPUT
R
L
FRONT
R
L
REAR
R
L
INPUT
R
L
GAIN
MIN MAX
LPF
50Hz 150Hz
SUBSONIC
15Hz 50Hz
GAIN
MIN MAX
F GAIN
MIN MAX
R GAIN
MIN MAX
LPF
50Hz 300Hz
HPF
HPF
15Hz 300Hz
BOOST
0dB 12dB
X-OVER
BPF HPF
FRONT
X-OVER
HPF FULL
REAR
X-OVER
HPF FULL
1
3
3
2
2
1
1
3
4
5
NA2-400.1
NA2-400.2
2
1
2
1
X-OVER
HP
OFF
LP
INPUT
L
R
LEVEL HP LP
9V 0.2V 15Hz 300Hz 50Hz 300Hz
LEVEL
9V 0.2V
FRONT
X-OVER
HP
OFF
LEVEL
9V 0.2V
REAR
X-OVER
HP
OFF
INPUT
FRONT
L
R
REAR
L
R
BOOST
0dB 12dB
INPUT
L
R
LEVEL
9V 0.2V
LPF
50Hz 150Hz
SUBSONIC
15Hz 50Hz
NA2-320.4
NA2-500.5
1 3 4
5
1
2
5
GAIN Adjustment
X-OVER Switch
BOOST Switch
The Low Pass Filter will cut off the
frequencies above the setting. The High
Pass Filter will cut off the frequencies
below the setting.
The Subsonic Filter will cut off the
frequencies below the setting. If using
with a subwoofer the settin should be kept
between 15-25Hz.
3
4
Frequencies Adjustment
SUBSONIC Adjustment
Some models include a bass
remote. Avoid adjusting the bass
remote while operating vehicle.
Remote Level
Control
C
-
1
-
2
MB QUART NA2-400.1 User manual
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