1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SounDigital 800.4 EVO 4.0 4-channel car amplifier. Designed for high-performance audio in compact spaces, this amplifier delivers 800 watts of power across four channels, suitable for various vehicle types including cars, motorcycles, and marine applications. Please read this manual thoroughly before installation and use to ensure optimal performance and safety.
2. Safety Information
Improper installation or use can result in serious injury, damage to the amplifier, or damage to your vehicle. Observe the following safety guidelines:
- Always disconnect the vehicle's battery negative terminal before beginning any electrical work.
- Ensure all wiring is correctly sized and fused to prevent electrical fires and damage.
- Mount the amplifier securely in a location that is dry, well-ventilated, and protected from excessive heat, moisture, and vibration.
- Avoid routing power cables near signal cables to prevent noise interference.
- Consult a professional installer if you are unsure about any aspect of the installation process.
- Do not operate the amplifier if it is damaged or malfunctioning.
3. Package Contents
Verify that all items are present in the package:
- SounDigital 800.4 EVO 4.0 Amplifier (1 unit)
- Instruction Manual
- Mounting Hardware (screws)
4. Product Overview
The SounDigital 800.4 EVO 4.0 is a compact, high-efficiency Class D amplifier designed for robust audio performance. Its features include:
- 800 Watts Total Power: Delivers clean, consistent sound across four channels.
- Compact Design: Facilitates installation in limited spaces such as motorcycles, compact cars, and marine vessels.
- Moisture-Resistant Construction: Features conformal-coated components for durability in challenging environments.
- Class D Technology: Ensures high efficiency, low heat output, and reduced power consumption.
- Integrated Crossovers and Gain Adjustments: Provides precise audio control with adjustable high-pass and low-pass filters.
- Bridgeable Channels: Offers flexibility for various system configurations, including higher output for subwoofers.
- Aluminum Heatsink Housing: Enhances heat dissipation and protects internal components.
Figure 4.1: Front view of the SounDigital 800.4 EVO 4.0 amplifier, showcasing the SounDigital logo and model number.
Figure 4.2: Side view of the amplifier, highlighting the control panel with gain and crossover adjustment knobs for channels 1/2 and 3/4, along with RCA input jacks.
Figure 4.3: Opposite side view of the amplifier, showing the power input terminals (GND, REM, +V) and the speaker output terminals for channels 1 through 4.
5. Setup and Installation
Proper installation is crucial for the performance and longevity of your amplifier. Follow these steps carefully.
5.1 Mounting Location
Select a mounting location that is:
- Secure and stable, away from moving parts.
- Well-ventilated to allow for heat dissipation.
- Protected from direct sunlight, excessive moisture, and extreme temperatures.
- Accessible for wiring and adjustments.
Due to its compact size, suitable locations include under seats, inside dashboards, or in motorcycle saddlebags.
5.2 Wiring Connections
Ensure all connections are tight and secure to prevent intermittent operation or damage.
- Power (BATT+): Connect a fused power cable directly from the positive terminal of the vehicle's battery to the +V terminal on the amplifier. The fuse should be located within 18 inches (45 cm) of the battery.
- Ground (GND): Connect a ground cable of the same gauge as the power cable from the GND terminal on the amplifier to a clean, unpainted metal surface of the vehicle chassis. Ensure a good electrical connection.
- Remote (REM): Connect a remote turn-on wire from your head unit's remote output to the REM terminal on the amplifier. This wire turns the amplifier on and off with your head unit.
- RCA Inputs: Connect RCA cables from your head unit's pre-amp outputs to the CH1/2 and CH3/4 RCA input jacks on the amplifier.
- Speaker Outputs: Connect your speakers to the CH1, CH2, CH3, and CH4 speaker output terminals. Observe correct polarity (+ to + and - to -). For bridged operation, refer to the specific bridging instructions provided with your amplifier or consult a professional.
Note: The SounDigital 800.4 EVO 4.0 is a 4-ohm amplifier. Ensure your speakers' impedance matches the amplifier's requirements for optimal performance and to prevent damage.
6. Operating Instructions
Once installed, the amplifier requires initial setup and adjustment for optimal sound quality.
6.1 Gain Adjustment
The gain control matches the amplifier's input sensitivity to the output level of your head unit. It is not a volume control.
- Turn the amplifier's gain controls to their minimum (fully counter-clockwise) position.
- Set your head unit's volume to about 75% of its maximum level.
- Slowly increase the amplifier's gain control until you hear slight distortion, then back it off slightly until the sound is clear.
- Repeat for both channel pairs (CH1/2 and CH3/4).
6.2 Crossover Settings
The built-in crossovers allow you to filter frequencies, directing specific ranges to your speakers for improved sound quality and speaker protection.
- Full Range (FLAT): Passes all frequencies. Use for full-range speakers or if your head unit handles crossovers.
- High-Pass Filter (HPF): Blocks frequencies below the set point. Use for tweeters or mid-range speakers to prevent them from playing low bass. Adjust the HPF knob to the desired cutoff frequency.
- Low-Pass Filter (LPF): Blocks frequencies above the set point. Use for subwoofers to prevent them from playing high frequencies. Adjust the LPF knob to the desired cutoff frequency.
Experiment with crossover settings to achieve the best sound balance for your specific speaker setup.
7. Maintenance
The SounDigital 800.4 EVO 4.0 amplifier requires minimal maintenance to ensure long-term performance.
- Cleaning: Periodically wipe the amplifier's exterior with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ventilation: Ensure that the amplifier's heatsink fins are free from dust and debris to maintain proper airflow and cooling.
- Connections: Occasionally check all wiring connections for tightness and corrosion. Loose connections can lead to poor performance or damage.
8. Troubleshooting
If you experience issues with your amplifier, consult the following table before seeking professional assistance.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier does not turn on |
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| No Sound Output |
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| Distorted Sound |
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| Amplifier Overheating |
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9. Specifications
Technical specifications for the SounDigital 800.4 EVO 4.0 amplifier.
| Feature | Detail |
|---|---|
| Model Number | 800.4 EVO 4.0 |
| Brand | SounDigital |
| Channels | 4 |
| Total RMS Power | 800 Watts |
| Technology | Class D |
| Voltage | 12.6 Volts (DC) |
| Product Dimensions (L x W x H) | 9.84 x 4.72 x 2.36 inches |
| Weight | 1.74 Pounds |
| Mounting Type | Freestanding |
| First Available Date | January 11, 2021 |
10. Warranty and Support
For warranty information and technical support, please refer to the SounDigital official website or contact your authorized dealer. Keep your purchase receipt as proof of purchase for any warranty claims.
