Soundigital EVOX 2400.4 User manual

1
OWNER´S MANUAL
2400.4

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TABLE OF CONTENTS
Introduction
Package contents ......................................................................................................
Safety instructions ......................................................................................................
Technologies
DTR.............................................................................................................
Ultra Compact PCB..........................................................................
Vibration Absorption Device.........................................................
Low Battery consumption.............................................................
Assembling and Disassembling the plastic cover...................................
Panels description
Audio inputs and controls............................................................
Power inputs and audio outputs..............................................
Electrical Dimensioning...........................................................................................
Audio inputs
RCA inputs............................................................................................
High inputs............................................................................................
Installation sequence.................................................................................................
Wiring diagram
Four channels wiring diagram...................................................
Three channels wiring diagram................................................
Two channels wiring diagram....................................................
Procedure for setting the gain..............................................................................
Crossovers set up.......................................................................................................
Technical specs
Parameters.........................................................................................
Dimensional data............................................................................
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3
4
5
5
6
6
7
8
9
10
10
10
11
12
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13
13
14
15
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...................................................................................................................

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DEAR CUSTOMER,
CONGRATULATIONS ON ACQUIRING A PRODUCT WITH THE HIGHEST
QUALITY AND TECHNOLOGY!
You have just purchased a SounDigital product of the highest technology and
quality, so we thank you for your confidence.
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.
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.
To better understand and take advantage of all the functions of the product and use
it safely, read this manual carefully and if you have any questions, consult our
support by email [email protected].
PACKAGE CONTENTS
- 1 EVOX Amplifier
- 1 Installation quick guide with warranty card
- 1 Allen wrench 2.0mm
- 1 Allen wrench 2.5mm
- 1 Allen wrench 3.0mm
- 2 Cables for high level input
- 1 Promotional sticker
INTRODUCTION

4
SAFETY INSTRUCTIONS
THIS "WARNING" SIGN ALERTS THE USER OF IMPORTANT INFO. NOT FOLLOWING
THIS INSTRUCTIONS MAY CAUSE INJURIES TO THE USER OR DAMAGE TO THE
EQUIPMENT.
Warning!
To prevent injuries to the user or damage to the amplifier, read all safety instructions
written on this manual;
If you are insecure about the installation of this equipment, get in touch with our
tech support or with a professional specialized in car audio installation;
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;
Use your sound system safely. The continuous exposure to sound pressures over
85dB may cause irreversible hearing damage;
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;
Do not install the amplifier in places exposed to water, dirt or humidity;
Choose a ventilated place to install the amplifier and avoid blocking the side
ventilation windows;
Mount the amplifier in a secure way. Avoid mounting it on metallic parts of the
vehicle, because it may cause ground looping (noise);
Make sure that the location chosen for the amplifier installation does not effect the
operation of the vehicle;
When passing cables through metallic walls, use rubber O-rings to avoid cable
cutting and short-circuits.
Clean the amplifier periodically with brush or dry cloth to assure the thermal
efficiency of the heatsink.
This product may reach temperatures over 60°C/140°F. Make sure it is cold before
touching it;
Be careful when making holes in the vehicle. Make sure you are not making holes
in the fuel tank, brake lines or electrical cables of the vehicle
Make sure the cables are properly secured throughout the installation;
Wear gloves, safety glasses and and all necessary PPE during the installation of
SounDigital amplifiers.

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TECHNOLOGIES
The DTR* is a dynamic thermal recovery system which always maintains a high
efficiency of the amplifier by accelerating the thermal exchange of electronic
components with the heatsink
* Patent. Required
ALUMINIUM
HEATSINK
CONDUCTIVE
COOPER LAYER
ELECTRONIC
COMPONENT
DYNAMIC THERMAL RECOVERY - DTR
An intelligent layout, with great use of the
PCB area and the use of modern
components with reduced structure
guarantee SounDigital products a
compact design, at the same time robust
and with excellent thermal efficiency.
ULTRA COMPACT PCB

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TECHNOLOGIES
VIBRATION ABSORPTION DEVICE
*Efficiency measured at power supply only
SounDigital amplifiers are known for their low
consumption of battery, and this feature was
improved on the EVOX Line. The new I-
POWER SUPPLY is even more modern, which
replaces the old toroidal transformers by a new
generation of "E-E" core transformers delivers
efficiency above 90% *,ensuring more hours of
sound without battery recharge.
I - POWER SUPPLY
SounDigital added a new device to the EVO X products which act like shock
absorbers reducing the impact of vibration on the eletronic circuit board, thereby
increasing the life and reliability of the amplifiers.

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1 2
21
A
B
DISASSEMBLING OF THE PLASTIC COVER
ASSEMBLING THE PLASTIC COVER
The plastic covers have the function of finishing and hiding the amplifier fixing
screws. To disassembling and assembling them, follow the instructions below.
1. Carefully pull out the top of plastic cover to release the upside latches, as shown in the picture 1.
2. Slide up the plastic cover in a continuous movement to remove it.
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.
EN
ASSEMBLING AND DISASSEMBLING THE PLASTIC COVER

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PANELS DESCRIPTION
2
4
612 7
11
510
8
1
3
13
Variable crossover control - 45Hz to 850Hz
High Level audio input
(To connect to the speaker output of the headunit)
Crossover Switch
Low Pass - Full - High Pass
Variable Gain Control
Audio input - RCA connector
2
4
6
8
10
12
1
3
5
7
9
11
CH1/CH2
CH1/CH2
CH1/CH2
CH1/CH2
CH1
CH3
CH3/CH4
CH3/CH4
CH3/CH4
CH3/CH4
CH2
CH4
9
"Power ON" LED indicator (Blue)
13 -

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Negative power supply connector (GND)
Remote power supply connector (REM)
Positive power supply connector (+12VDC)
Positive speaker connector
Negative speaker connector
14
15
16
18
20
22
24
17
19
21
23
CH1
-
-
-
CH3
CH4
CH2
PANELS DESCRIPTION
Positive speaker connector
Negative speaker connector
Positive speaker connector
Negative speaker connector
Negative speaker connector
Positive speaker connector
16 15 14 17 19 21 23
18 20 22 24
2400.4

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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.
We recommend the use of ONLY OFC (Oxygen Free Copper) Cables on the
installation of our products.
AUDIO INPUTS
RCA AND HIGH INPUTS SHOULD NOT BE USED SIMULTANEOUSLY OR YOU MAY
DAMAGE THE AMPLIFIER.
Warning!
High signal inputs
RCA Inputs
X XX
All RCA Inputs must be connected for
the 4 channels to work.
All High signal Inputs must be connected for
the 4 channels to work.
High input must be used when the main unit does not have RCA outputs.
When hi inputs 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.
POWER CABLE
GROUND CABLE
SPEAKER CABLE
2400
WRMS
21mm² - 4 AWG
2 x 2mm² - 12 AWG

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ØMount the amplifier in such a way you have access to the connectors;
ØInstall 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.
ØConnect 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;
ØThe ground cable must be as short as possible and must be connected to the vehicle
chassis and the battery negative;
ØInstall the signal input cables in a proper way, distant from the power cables;
ØConnect the RCA or the high signal input cables to the head unit and amplifiers;
ØInstall the audio output cables with the appropriate section , distant from the power and
audio input cables;
ØConnect the audio output cables to the amplifier and speakers respecting the positive
(+) and negative (-) polarities;
ØInstall the remote cable with the power cables, using 1.5mm² (15 AWG) cable or thicker;
ØConnect 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);
ØBefore 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
ØCheck if the headunit is turned off and then place the fuses in the fuse holders or switch
the circuit breakers on;
ØTurn on the main unit and the amplifier will turn on the "On" LED indicating that it is in
operation.
INSTALLATION SEQUENCE
Warning!
Warning!
Remove the paint between
the terminal and chassis

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WIRING DIAGRAM
4 CHANNEL WIRING DIAGRAM
3 CHANNEL WIRING DIAGRAM
See "Audio Inputs"
on page 10
GND
See "Audio Inputs"
on page 10
GND
2400.4
2400.4

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WIRING DIAGRAM / GAIN SETING
2 CHANNEL WIRING DIAGRAM
MODEL BRIDGE / POWER
STEREO / POWER
STEREO OUTPUT VOLTAGE BRIDGE OUTPUT VOLTAGE
2Ω/ 1200W
4Ω/ 1200W
1 / 600WΩ
2 / 600WΩ
24.5 V
34.6 V
49.0 V
69.3 V
2400.4 2Ω
2400.4 4Ω
GAIN SETING
Necessary equipament:
ØDigital AC voltmeter;
ØMedia with sine wave test tone 60Hz
recorded at 0db;
ØScrewdriver 1/8" ( for gain set)
Set up procedure
This procedure is the same for both
Ø
gain controls;
ØTurn the gain control all the way down.
ØDisconnect the output cables from the
amplifier outputs;
ØTurn off all processing (bass, treble,
loudness, EQ, etc.);
ØSet the source unit volume to 3/4 of full
volume.
ØSet the source unit's fader control to
center position;
ØSet the crossover selector switch in "F»
Ø Use a 60 Hz sine wave
ØConnect the AC voltmeter to the
speaker output connectors of the
amplifier. Make sure you test the
voltage at the correct connectors (+
and –);
ØIncrease the gain control until the target
voltage is observed with the voltmeter
(see the chart below);
ØOnce you have adjusted the amplifier
to its correct voltage output, turn off the
s o u r ce unit and re c o n nect th e
speaker(s)
Download the tracks for set up in
https://soundigitalusa.com/tracks-for-
set-up/
See "Audio Inputs"
on page 10
GND
2400.4

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CROSSOVER SET UP
ØSwitch Key to "F" position (Full Range): All the frequencies are reproduced.
0dB
-12dB
dB
Hz
ØSwitch key to "HP" - Set in the variable control between 45Hz and 850Hz ("A")
where you want to perform the high pass cut filter;
-3dB
c/2
ƒ
High
Pass
c
ƒ
High
Pass
A
0dB
-15dB
dB
Hz
ØSwitch key to "LP" - Set in the variable control between 45Hz and 850Hz ("B")
where you want to perform the low pass cut filter;
-3dB
0dB
-15dB
Low
Pass
B
c
ƒc*2 ƒ
Low
Pass
dB
Hz
"F" All the frequencies are reproduced;
"LP " Set in the variable control on Low Pass Function;
"HP " Set in the variable control on High Pass Function.

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TECHNICAL SPECS
Power RMS Bridge @ 4Ω*
Power RMS Bridge @ 2Ω*
Power RMS @ 2Ω*
Power RMS @ 1Ω*
Frequency Response (-3db)
Low Pass filter (12dB/oct)
Operating Voltage
SNR
Input Sensitivity
Current Draw (Music)
Total Efficiency
Damping Factor (@100Hz nominal impedance)
Stereo Minimum Impedance
Bridge Minimum Impedance
Fuse (music)
Recommended batery
Current Draw (Max)
High Pass filter (12Db/oct)
2 X 1200W2 X 792W
N/A 2 X 1200W
4 X 600W 4 X 396W
N/A4 X 600W
5Hz ~ 22kHz5Hz ~ 22kHz
8V ~ 16V8V ~ 16V
90dB90dB
0.2 ~ 4V0.2 ~ 4V
121A121A
241A241A
79%79%
200200
2Ω 1Ω 
4Ω 2Ω 
150A150A
120Ah120Ah
45Hz ~ 850Hz45Hz ~ 850Hz
45Hz ~ 850Hz45Hz ~ 850Hz
*Power at 12.6V @ 60Hz with a maximum THD of 1%.
PARAMETERS
DIMENSIONAL DATA
Net Weight: 3.32 lb (1.51 kg)
Gross Weight: 3.64 lb (1.65 kg)
2400.4 4Ω 2400.4 2Ω
8.2"(208mm)
8.9"(227mm)
5.4"(136mm)
2.2"(55mm)
4.8"(121mm)

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