OWNER´S MANUAL
400.4EVO6
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:
info@soundigitalusa.com
PACKAGE CONTENTS
- 01 400.4 EVO6 amplifier
- 01 Quick installation guide with warranty certificate
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, unp l ug 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 produc t may reach temperatures over 60°C (140°F). Make sure it is cold before touching it; |
This equipment is for use in au to motive DC voltag e 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 fuel tank, brake lines or electrical cables of the vehicle; |
Do not install the amplifier in places exposed to water, dirt or humidity; |
 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. |
Warning!
THIS “WARNING” SIGN ALERTS THE USER OF IMPORTANT INFO. NOT FOLLOWING THESE INSTRUCTIONS MAY CAUSE INJURIES TO THE USER OR DAMAGE TO THE EQUIPMENT.
PANELS DESCRIPTION
| 2 1 3 4 |
CH1 CH2 CH3 CH4 |
Audio inputs – RCA connectors |
| 5 6 |
CH1/CH2 CH3/CH4 |
Variable Gain control |
| 8
7 |
CH1/CH2 CH3/CH4 |
Crossover switch key Low Pass – Full – High Pass |
| 9 | Blue | POWER ON LED indicador |
| 10 | – | Positive power supply connector (+12VDC) |
| 11 | – | Negative power supply connector (GND) |
| 12 | – | Remote power supply connector (REM) |
| 13 | CH4 | Positive speaker connector (+) |
| 14 | CH4 | Negative speaker connector (-) |
| 15 | CH3 | Positive speaker connector (+) |
| 16 | CH3 | Negative speaker connector (-) |
| 17 | CH2 | Positive speaker connector (+) |
| 18 | CH1 | Negative speaker connector (-) |
| 19 | CH2 | Positive speaker connector (+) |
| 20 | CH1 | Negative speaker connector (-) |
INSTALLATION SEQUENCE
Warning!
BEFORE PROCEEDING WITH THE INSTALLATION, UNPLUG THE NEGATIVE TERMINAL FROM ALL OF THE BATTERIES, TO AVOID FIRE, DAMAGE TO THE AMPLIFIER AND THE USER HIMSELF.
- Fix the amplifier so that the connectors can be easily accessed;
- 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;
Warning!
THE MAXIMUM DISTANCE FOR THE INSTALLATION OF THE FUSE/CIRCUIT BREAKER IS 12 INCHES (30cm) AWAY FROM THE BATTERY. - 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;
- The ground cable must be as short as possible and must be connected to the vehicle chassis and the battery negative;
- Install the signal input cables in a proper way, distant from the power cables;
- Connect the RCA cables to the head unit and amplifiers;
- Install the audio output cables with the appropriate section, distant from the power and audio input cables;
- Connect the audio output cables to the amplifier and speakers respecting the positive (+) and negative (-) polarities;
- Install the remote cable with the power cables, using 1.5mm² (15 AWG) cable or thicker;
- Connect the remote power cable to the amplifier’s “REM” terminal at the main unit’s remote power output;
- Before powering the system, verify all the connections and make sure there are no mistakes or short-circuits on the power and ground cables;
- Reconnect the ground of the batteries
- Check if the head unit is turned off and then place the fuses in the fuse holders or switch the circuit breakers on;
- Turn on the main unit and the amplifier will turn on the “POWER ON” LED indicating that it is in operation.
Warning!
Minimum recommended installati on distance between amplifiers*. 1.18in. (30mm)
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.
| 400 WRMS |
GROUND CABLE (GND) POWER CABLE (+12VDC) | 6mm² (9 AWG) |
| SPEAKER CABLE | 2 x 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
All RCA inputs must be connected for the amplifier to work properly. If the signal source is mono type, use “Y” cable at the input.
CROSSOVER SET UP
“F” All the frequencies reproduced will be
“LP” Frequencies below 80Hz will be reproduced
“HP” Frequencies above 80Hz will be reproduced
Change the switch to “F” position (Full Range) – All the frequencies will be reproduced as in “Figure 1”;
Change the switch to “HP” position – All frequencies above 80Hz will be reproduced as in “Figure 2”;
- Change the switch to “LP” position – All frequencies below 80Hz will be reproduced as in “Figure 3”.
WIRING DIAGRAM
4 CHANNELS WIRING DIAGRAM (PER CHANNEL)
All RCA inputs must be connected for the amplifier to work properly. If the signal source is a mono type, use a “Y” cable at the input.
3 CHANNELS WIRING DIAGRAM
All RCA inputs must be connected for the amplifier to work properly. If the signal source is a mono type, use a “Y” cable at the input.
WIRING DIAGRAM / GAIN SETTING
2 CHANNELS WIRING DIAGRAM (BRIDGE)
All RCA inputs must be connected for the amplifier to work properly. If the signal source is a mono type, use a “Y” cable at the input.
GAIN SETTING
Necessary equipament:
- Digital AC voltmeter;
- Media with sine wave test tone 60Hz recorded at 0db.
Set up procedure:
This procedure is the same for both Ø gain controls; - Turn the gain control all the way down;
- Disconnect the output cables from the amplifier outputs;
- Turn off all processing (bass, treble, loudness, EQ, etc.);
- Set the audio player volume to 3/4 of full volume;
- On the audio player, set the fader control to center position;
- Set the crossover selector switch in “F”;
- Use a 60Hz sine wave;
- Connect the AC voltmeter to the speaker output connectors of the amplifier. Make sure you test the voltage at the correct connectors (+ and –);
- Increase the gain control until the target voltage is observed with the voltmeter (see the chart below);
- Once you have adjusted the amplifier to the correct voltage output, turn off the source unit and reconnect the speaker(s).
| MODEL | STEREO /POWER | POWER BRIDGE / | STEREO OUTPUT VOLTAGE | BRIDGE OUTPUT VOLTAGE |
| 4Ω 400.4 | 2 / 100WΩ | 4 / 200WΩ | 14.14V | 28.3V |
Download the tracks for set up in https://soundigitalusa.com/tracks-for-set-up/
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:
TECHNICAL SPECS
| PARAMETERS | 400.4 EVO 6 4Ω |
| Power RMS @ 4Ω** | 4 x 66W |
| Power RMS @ 2Ω** | 4 x 100W |
| Power RMS (Bridge) @ 4Ω** | 2 x 200W |
| Power RMS (Bridge) @ 2Ω** | N/A |
| Frequency Response (-3dB) | 8Hz ~ 20kHz |
| Low Pass filter (12dB/octave) | 80Hz |
| High Pass filter (12dB/octave) | 80Hz |
| Operating Voltage | 9V ~ 16V |
| SNR | 94dB |
| Input Sensitivity (RCA) | 0.2V ~ 2V |
| Current Draw (music) | 20A |
| Current Draw (max.) | 40.5A |
| Total Efficiency | 78% |
| Damping Factor (@100Hz nominal impedance) | 200 |
| Power Cable | 6mm² (9 AWG) |
| Speaker Cable | 2 x 1.5mm² (15 AWG) |
| Recommended Fuse* (music) | 25A |
| Recommended Battery (minimum) | 40Ah |
**Power at 12.6V @ 60Hz with a maximum THD of 1%.
*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.
DIMENSIONAL DATA
| Net Weight | 0.389 kg 0.857 ( lb) |
| Gross Weight | 0.437 kg 0.963 ( lb) |
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. 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.
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 images presented in this document are representative and merely illustrative; therefore, they do not necessarily correspond to the actual product/model.
Document revision code: 1000750534-003/SEP2023
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Documents / Resources
 |
SounDigital 400.4 EVO OHMS Car Audio Amplifier [pdf] Owner's Manual 400.4 EVO OHMS Car Audio Amplifier, 400.4 EVO, OHMS Car Audio Amplifier, Car Audio Amplifier, Audio Amplifier |
