OWNER´S MANUAL
400.2
TABLE OF CONTENTS
Introduction..................................................................................................................................................... 3
Package contents ...................................................................................................................................... 3
Safety instructions ...................................................................................................................................... 4
Assembling and Disassembling the plastic cover.................................................................. 5
Panels description
Audio inputs and controls ............................................................................................ 6
Power inputs and audio outputs............................................................................... 7
Installation sequence................................................................................................................................ 8
Electrical dimensioning ........................................................................................................................... 9
Audio inputs
RCA inputs ............................................................................................................................ 9
High Level input .................................................................................................................. 9
Wiring diagram .......................................................................................................................................... 10
Procedure for setting the Gain .......................................................................................................... 11
Crossovers set up ................................................................................................................................... 12
Battery connection diagram .............................................................................................................. 13
Amplifier operational LEDs...................................................................................................................14
Diagnostic table ........................................................................................................................................ 15
Technical specifications
Parameters......................................................................................................................... 16
Dimensional data............................................................................................................ 16
Additional Information............................................................................................................................ 16
Document revision code: 1000750307-004/SEP2024
INTRODUCTION
Dear Consumer,
Congratulations, you have just acquired a SounDigital product of the highest
technology and quality, so we thank you for your trust.
SounDigital products are made with raw materials of the highest quality
standards, and the most modern processes, equipment and technology are
used in their production.
IMPORTANT INFORMATION
On this manual you will learn about the product, its features and
characteristics, in order to obtain the best result and to be able to enjoy your
music with SounDigital quality and power.
Read this manual carefully and follow precisely all the information contained
therein, these are very important and allow your amplifier to work optimally. If you
think it is necessary, please do not hesitate to contact our technical support at the
following contact:
[email protected]
PACKAGE CONTENTS
▪ 01 400.2 EVO5 Amplifier
▪ 01 Installation quick guide with warranty card
▪ 01 Cable for high level input
▪ 01 Promotional sticker
*Merely illustrative image.
3
SAFETY INSTRUCTIONS
To avoid injury to the user or damage to the amplifier, read all safety instructions
written on this manual.
The installation of this product
must be done by a qualified
professional. In case of any
doubt, please contact our
technical support;
When passing cables through
metallic walls, use rubber
O-rings to avoid cable cutting
and short-circuits;
Before proceeding with the
installation of any electric
equipment on your vehicle,
unplug the negative (-)
terminal of the battery to avoid
fires, injuries or damages;
Make sure that the chosen
location for the amplifier
installation does not affect the
operation of the vehicle;
Use your sound system safely.
The continuous exposure to
sound pressures over 85dB
may cause irreversible
hearing damage;
This product may reach
temperatures over 60°C
(140°F). Make sure it is cold
before touching it;
X
This equipment is for use in
automotive DC voltage
batteries between 12.6 and
14.4 volts. Before installing the
equipment, check voltage of
the batteries;
Clean the amplifier periodically
with brush or dry cloth to
assure the thermal efficiency
of the heatsink;
Do not install the amplifier in
places exposed to water, dirt
or humidity;
Be careful when making holes
in the vehicle. Make sure you
are not making holes in the
f u e l t a n k , b r a ke l i n e s o r
electrical cables of the vehicle;
X
Choose a ventilated place to
install the amplifier and avoid
blocking the side ventilation
windows;
Make sure the cables are
properly secured throughout
the installation;
Fix the amplifier properly and
firmly. Avoid fixing to metallic
parts of the vehicle, as this
procedure may cause ground
looping (noise);
Wear gloves, safety glasses
and all necessary PPE during
the installation of SounDigital
amplifiers.
THIS "WARNING" SIGN ALERTS THE USER OF IMPORTANT INFO. NOT FOLLOWING
THESE INSTRUCTIONS MAY CAUSE INJURIES TO THE USER OR DAMAGE TO THE
Warning!
EQUIPMENT.
4
ASSEMBLING AND DISASSEMBLING THE PLASTIC COVER
The plastic covers are used to finish off and hide the amplifier’s fixing screws. To
disassemble and assemble them, follow the instructions below.
DISASSEMBLING OF THE PLASTIC COVER
1
2
1. Carefully pull out the top of the plastic cover to release the upside latches, as shown in picture 1.
2. Slide up the plastic cover in a continuous movement to remove it.
*Merely illustrative images.
ASSEMBLING THE PLASTIC COVER
1
2
A
B
EN
1. To fit the plastic cover back, carefully insert the point A of the plastic cover into point B of the
amplifier, slowly sliding it down.
2. Gently press the sides of the top of the plastic cover towards the bottom of the amplifier until
you hear a clicking noise.
*Merely illustrative images.
5
PANELS DESCRIPTION
Audio inputs and controls
1
2
3
4
5
6
1
CH1/CH2
Crossover switch key
Low Pass – Full – High Pass
2
CH1/CH2
Variable Gain Control
3
CH1/CH2
Audio input – High Level
(To connect to the speaker output of the head unit)
4
CH2
5
CH1
6
Blue
Audio inputs – RCA connectors
"POWER ON" LED indicator
6
PANELS DESCRIPTION
Power inputs and audio outputs
7
8
9
10 11 12 13
7
-
Negative power supply connector (GND)
8
-
Remote power supply connector (REM)
9
-
Positive power supply connector (+12VDC)
10
CH2
Negative speaker connector (-)
11
CH2
Positive speaker connector (+)
12
CH1
Negative speaker connector (-)
13
CH1
Positive speaker connector (+)
7
INSTALLATION SEQUENCE
BEFORE PROCEEDING WITH THE INSTALLATION, UNPLUG THE NEGATIVE TERMINAL
FROM ALL OF THE BATTERIES, TO AVOID FIRE, DAMAGE TO THE AMPLIFIER AND THE
Warning! USER HIMSELF.
Ø Mount the amplifier in such a way you have access to the connectors;
Ø Install the power cables in the vehicle properly, starting from the battery to the fuse holder
or circuit breaker, use the cable with the appropriate size. Make all connections, install fuse
holders or circuit breakers, but without placing the fuses or with the circuit breakers in the
"OFF" position;
THE MAXIMUM DISTANCE FOR THE INSTALLATION OF THE FUSE/CIRCUIT BREAKER
IS 12 INCHES (30cm) AWAY FROM THE BATTERY.
Warning!
Ø Connect the power cables in to the amplifier, observing the polarity. Connect all the positive
cables (+) from the fuse holder or circuit breaker to the positive conector of the amplifier
and all the negative power cables from the batteries to the negative connector of the
amplifier;
Ø The ground cable must be as short as possible and must be connected to the vehicle
chassis and the battery negative;
Remove the paint
between the terminal
and chassis
Ø Install the signal input cables in a proper way, distant from the power cables;
Ø Connect the RCA or the high level signal input cables to the head unit and amplifiers;
Ø Install the audio output cables with the appropriate section, distant from the power and
audio input cables;
Ø Connect the audio output cables to the amplifier and speakers respecting the positive (+)
and negative (-) polarities;
Ø Install the remote cable with the power cables, using 1.5mm² (15 AWG) cable or thicker;
Ø Connect the remote power cable to the amplifier's "REM" terminal at the main unit's remote
power output (when not using the high level signal inputs);
Ø Before powering the system, verify all the connections and make sure there are no
mistakes or short-circuits on the power and ground cables;
Ø Reconnect the ground of the batteries ;
Ø Check if the head unit is turned off and then place the fuses in the fuse holders or switch the
circuit breakers on;
Ø Turn on the main unit and the amplifier will turn on the "POWER ON" LED indicating that it is
in operation.
Minimum recommended
installation distance
Warning! between amplifiers*.
1.18in. (30mm)
X
*For installations with more than one amplifier, second unit not included. Merely illustrative images.
8
ELECTRICAL DIMENSIONING AND AUDIO INPUTS
ELECTRICAL DIMENSIONING
For proper operation of your SounDigital amplifier, you need the proper
dimensioning of the electrical system and the cables used.
The table below shows the minimum section of GND cables, +12VDC cables
and speaker output cables according to the power generated by the amplifier.
POWER CABLE (+12VDC)
400
WRMS
6mm² (9 AWG)
GROUND CABLE (GND)
SPEAKER CABLE
1.5mm² (15 AWG)
REMOTE CABLE
1.5mm² (15 AWG)
We recommend the use of only OFC (Oxygen Free Copper) cables on the
installation of our products.
Copper-clad aluminum wire (CCAW) must not be used.
AUDIO INPUTS
RCA inputs
REMOTE
All RCA inputs must be connected for
the amplifier to work properly.
High level
signal input
All High level signal inputs must be
connected for the amplifier to work
properly.
REMOTE
High level input must be used when the main unit does not have RCA outputs.
When High level input is used, no remote connection is required, the amplifier
recognizes the audio signal and switches on.
If your source unit is not able to turn on the amplifier through the High level input,
the remote input should be connected normally.
RCA AND HIGH LEVEL INPUTS SHOULD NOT BE USED SIMULTANEOUSLY OR
YOU MAY DAMAGE THE AMPLIFIER.
9
WIRING DIAGRAM
2 CHANNELS WIRING DIAGRAM (PER CHANNEL)
All RCA inputs must be connected for
the amplifier to work properly.
REMOTE
FUSE
+12V
+12V
FUSE
+12V
In case of connections with
more than one battery, see the
installation diagram on page 13.
(PER CHANNEL)
Minimum impedance of use according to the model
Per channel
Model
(PER CHANNEL)
Bridge
400.2 EVO5 4Ω
1 CHANNEL WIRING DIAGRAM (BRIDGE)
All RCA inputs must be connected for
the amplifier to work properly.
REMOTE
FUSE
+12V
+12V
+12V
FUSE
In case of connections with
more than one battery, see the
installation diagram on page 13.
(BRIDGE)
Minimum impedance of use according to the model
Model
Per channel
Bridge
400.2 EVO5 4Ω
10
GAIN SETTING
GAIN SETTING
Necessary equipament:
Ø On the audio player, set the fader
control to center position;
Ø Digital AC voltmeter;
Ø Media with sine wave test tone 60Hz
recorded at 0db.
Ø Set the crossover selector switch
in "F";
Set up procedure:
Ø Turn the gain
down;
control all the way
Ø Disconnect the output cables from
the amplifier outputs;
Ø Turn off all processing (bass, treble,
loudness, EQ, etc.);
Ø Set the audio player volume to 3/4 of
full volume;
Ø Use a 60Hz sine wave;
Ø Connect the AC voltmeter to the
speaker output connectors of the
amplifier. Make sure you test the
voltage at the correct connectors
(+ and –);
Ø Increase the gain control until the
target voltage is observed with the
voltmeter (see the chart below);
Ø Once you have adjusted the
amplifier to the correct voltage
output, turn off the source unit and
reconnect the speaker(s).
MODEL
400.2
4Ω
STEREO /
POWER
BRIDGE /
POWER
STEREO OUTPUT
VOLTAGE
BRIDGE OUTPUT
VOLTAGE
2Ω / 2 x 200W
4Ω / 1 x 400W
20V
40V
Download the tracks for set up in https://soundigitalusa.com/tracks-for-set-up/
11
CROSSOVER SET UP
"F" All the frequencies will be reproduced
"LP" Frequencies below 80Hz will be reproduced
"HP" Frequencies above 80Hz will be reproduced
Ø Change the switch to "F" position (Full Range) - All frequencies will be
reproduced as shown in the figure below;
dB
0dB
-3dB
20kHz
10Hz
Hz
Ø Change the switch to "HP" position - All frequencies above 80Hz will be
reproduced as shown in the figure below;
A
dB
0dB
-3dB
-12dB
ƒc/2
High
Pass
ƒc
Hz
High
Pass
Ø Change the switch to "LP" position - All frequencies below 80Hz will be
reproduced as shown in the figure below.
dB
B
0dB
-3dB
-12dB
ƒc ƒc*2
Low
Pass
Low
Pass
Hz
12
BATTERY CONNECTION DIAGRAM
When necessary the association of one or more battery banks to supply the
necessary current to the amplifier, it is recommended to use batteries of the same
brand, model, and if possible the same manufacturing lot so that the system has
the maximum performance.
For an ideal energy performance, we recommend that all batteries be connected to
positive and negative busbars and the busbars connected to the amplifier, as
shown in the diagram below:
It is mandatory to install the fuse at a
maximum distance of 12 inches from the battery.
BUSBAR
1
FUSE
FUSE
FUSE
2
All cables, positive and negative,
connected from the battery to the
busbar must be the same length.
Likewise the cables connected from
the busbar to the amplifier.
FUSE
BUSBAR
Battery connections without the use of a busbar,
as shown in the example below, must be avoided.
This setting decreases the efficiency of supplying
power to the system.
FUSE
It is mandatory to install the fuse at a
maximum distance of 12 inches from the battery.
1
FUSE
2
3
*Merely illustrative image.
13
AMPLIFIER OPERATIONAL LEDS
"POWER" LED indicator (blue)
LED "POWER" Off ................................... Product off.
LED "POWER" On .................................. Product on.
LED
*Merely illustrative image.
14
DIAGNOSTIC TABLE
In the vast majority of cases, situations that at first glance appear to be a defect can be
adjusted and resolved by yourself without the need to seek Authorized SounDigital
Technical Assistance. If the problem persists after carrying out the corrective actions
below, contact our nearest technical team.
APPARENT DEFECT
PROBABLE CAUSE
SOLUTION
Amplifier does not turn on.
Lack of power supply.
▪Check if the power and remote signal
cables are connected correctly.
Low or very high
supply voltage.
▪Check the battery, cables and fuse
holder of the installation.
▪Check that the battery and cables are
sized as specified in the parameter table
in this manual.
Abnormal noise from
the speakers.
Ground fault.
▪Check if there is a defective RCA cable, if
the radio's RCA ground is open or if there
is an external power source connected
(source or charger).
▪Make sure the RCA cables are close to
the vehicle's power cables or wiring
harnesses.
▪Check that the vehicle's spark plug wires
are suppressive. In many cases it is
necessary to use capacitors in the
alternator, horn and ignition.
▪Check the quality of the grounding and
that there is no paint at the fixing point, if
necessary, scrape it off. For fixing, use an
eye terminal correctly sized for the cable.
When using other amplifiers, ground each
piece of equipment at the same point.
Popping noise in
speakers when amplifier
is turned on or off.
RCA ground fault.
▪Check whether the car radio's RCA
grounding or the RCA cable's grounding
mesh are broken.
Weak bass.
Phase cancellation
between speakers.
▪Check if there is a reversal in the polarity
of the connection between the speakers.
Amplifier turns on but
there is no audio.
Input or output connection
failed or no signal.
▪Check the connection of the RCA cables
and output cables.
▪Check the car radio volume, balance or
fader settings and audio processor levels.
When audio is cut off.
15
TECHNICAL SPECS
PARAMETERS
400.2
Power RMS @ 4Ω**
2 x 132W
Power RMS @ 2Ω**
2 x 200W
Power RMS (Bridge) @ 8Ω**
1 x 264W
Power RMS (Bridge) @ 4Ω**
1 x 400W
Frequency Response (-3dB)
10Hz ~ 20kHz
Subsonic Filter (12dB/octave)
80Hz
Low Pass filter (12dB/octave)
80Hz
Operating Voltage
9V ~ 16V
SNR
100.28dB
Input Sensitivity (RCA)
0.2V ~ 2V
Input Sensitivity (High Level input)
1 ~ 10V
Current draw (music)
18.93A
Current draw (max.)
37.86A
Total efficiency
83.85%
4Ω
Damping factor (@100Hz nominal impedance)
200
Power cable
6mm² (9 AWG)
Speaker cable
1.5mm² (15 AWG)
Remote cable
1.5mm² (15 AWG)
Recommended Fuse* (music)
25A
Recommended battery (minimum)
40Ah
*It is mandatory to install the fuse at a maximum distance of 12 inches from the battery.
**POWER RATING ACCORDING TO
CTA-2006 INDUSTRY STANDARDS.
**Power at 12.6V @ 60Hz with a maximum THD of 1%.
DIMENSIONAL DATA
105.8mm(4.2")
50.9mm(2.0")
101.0mm(4.0")
113.0mm(4.4")
120.0mm(4.7")
Net Weight*
0.52 kg (1.15 lb)
Gross Weight*
0.58 kg (1.28 lb)
*Weights may vary slightly depending
on the manufacturer.
ADDITIONAL INFORMATION
The values presented are based on measurements performed in
SounDigital's laboratories. All the equipment used in the assays, tests,
measurements and gauging of the technical parameters of SounDigital
products were calibrated in certified laboratories, thus ensuring the
performance and standard of excellence of the developed products.
Updates of information made in this document will always be
published and made available for consumer consultation, free of
charge, on the brand's websites. The user is advised to search for
the manual in its latest version when necessary.
The Manufacturing Process may present variations, and the electronic
components may also present changes in values in relation to their
nominal parameters. Thus, causing small differences between
measurements taken. Small variations in the values presented and
divulged by SounDigital are recognized.
The images presented in this document are representative and
merely illustrative; therefore, they do not necessarily correspond to the
actual product/model.
16
Document revision code: 1000750307-004/SEP2024
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