Owner's Manual for SounDigital 1200.4 EVOPS Amplifier

Quick guide from the manual

This manual provides essential instructions for the SounDigital 1200.4 EVOPS amplifier. Key operations include proper electrical dimensioning, secure installation, and precise gain/crossover configuration. Always disconnect the negative battery terminal before starting any installation work. Ensure your battery voltage is between 12.6V and 14.4V for optimal performance.

Product Overview

The SounDigital 1200.4 EVOPS is a high-efficiency Class D amplifier designed for power sports applications. It features a compact, robust design with an IP64 rating, making it resistant to moisture, water splashes, and dust. It utilizes DTM (Dynamic Thermal Management) and an I-POWER supply for improved efficiency.

Safety Instructions

• Always disconnect the negative (-) battery terminal before installation to prevent fires or injuries.
• Use OFC (Oxygen Free Copper) cables for installation.
• Mount the amplifier in a dry, ventilated location, avoiding metallic surfaces to prevent ground loops.
• Ensure the fuse or circuit breaker is installed within 30cm (1 foot) of the battery.
• Wear appropriate PPE (gloves, safety glasses) during installation.
• The amplifier can reach temperatures over 60°C/140°F; allow it to cool before touching.

Assembling and Disassembling the Plastic Seals

The amplifier includes plastic seals to protect connectors. To disassemble, squeeze the assembled flexible plastic seals and pull them out. To assemble, hold the seals and fit them into their specific housing, ensuring each connector has its corresponding seal and is perfectly fitted.

Panels Description

The amplifier features two main panels:

• Audio inputs and controls: Includes RCA connectors for audio input, variable gain controls for CH1/CH2 and CH3/CH4, and crossover switches (Low Pass, Full, High Pass).
• Power inputs and audio outputs: Includes terminals for +12VDC, Remote (REM), and Ground (GND), along with speaker output terminals for channels 1 through 4.

Installation

Follow these steps for a successful installation:

1. Mount the amplifier securely.
2. Install power cables from the battery to the fuse holder/circuit breaker, then to the amplifier.
3. Connect the ground cable to the battery negative or vehicle chassis (ensure the connection point is free of paint).
4. Connect signal input cables (RCA) away from power cables.
5. Connect speaker output cables, respecting positive (+) and negative (-) polarities.
6. Connect the remote cable to the REM terminal.
7. Verify all connections, then reconnect the battery ground and insert fuses.

Wiring Diagrams

The manual provides specific wiring diagrams for different configurations:

• Four channels: Standard setup for four speakers.
• Three channels: Mixed setup.
• Two channels: Bridged setup.

Always check the minimum speaker impedance in the technical specifications table before connecting speakers.

Gain Setting

To set the gain correctly:

1. Turn the gain control all the way down.
2. Disconnect output cables.
3. Turn off all audio processing (EQ, bass, treble).
4. Set source unit volume to 3/4 of full volume.
5. Set crossover switch to 'F' (Full).
6. Use a 60Hz sine wave test tone.
7. Connect an AC voltmeter to the speaker outputs.
8. Increase gain until the target voltage (specified in the manual's chart) is reached.
9. Turn off the source unit and reconnect speakers.

Crossover Setup

The crossover allows you to filter frequencies:

• F (Full): All frequencies are reproduced.
• LP (Low Pass): Set the variable control between 45Hz and 850Hz to cut high frequencies.
• HP (High Pass): Set the variable control between 45Hz and 850Hz to cut low frequencies.

Technical Specs

• Operating Voltage: 8V - 16V.
• Frequency Response: 5Hz - 22kHz.
• Input Sensitivity: 0.2V - 4V.
• SNR: 88dB (2Ω model) / 91dB (4Ω model).
• Recommended Battery: 70Ah.