Soundigital 1600.1 EVOX2 Monoblock 2 Ohm Amplifier User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Soundigital 1600.1 EVOX2 Monoblock 2 Ohm Amplifier. Please read this manual thoroughly before attempting installation or operation to ensure proper function and safety. This amplifier is designed for high-performance car audio systems, delivering significant power to subwoofers.

2. Safety Information

• Always disconnect the vehicle's battery negative terminal before starting any electrical work.
• Ensure all wiring is correctly sized and fused to prevent damage to the amplifier, vehicle, or potential fire hazards.
• Mount the amplifier securely in a location that allows for adequate ventilation and is protected from moisture and excessive heat.
• Avoid installing the amplifier in areas where it could interfere with vehicle safety systems or driver visibility.
• Consult a professional car audio installer if you are unsure about any part 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 1600.1 EVOX2 Monoblock Amplifier
• User Manual
• Remote Level Control (Bass Knob)
• Mounting Hardware (screws)

4. Product Features

• Power @ 4Ω: 1 X 1056 WRMS
• Power @ 2Ω: 1 X 1600 WRMS
• Total Efficiency: 89%
• Frequency Response (-3dB): 5Hz – 25kHz
• SNR: 94dB
• Crossover HPF: 5Hz – 40Hz
• Crossover LPF: 50Hz – 500Hz

5. Setup and Installation

5.1 Mounting the Amplifier

Choose a mounting location that is dry, well-ventilated, and secure. Ensure the amplifier is not exposed to direct sunlight or excessive heat. Allow sufficient space around the amplifier for air circulation to prevent overheating.

5.2 Wiring Connections

Proper wiring is crucial for performance and safety. Use high-quality cables of appropriate gauge for power, ground, and speaker connections.

Image: Rear panel of the Soundigital 1600.1 EVOX2 amplifier, illustrating the speaker output terminals and the +12 VDC, REM (remote), and GND (ground) power input terminals.

5.2.1 Power and Ground Connections

• +12 VDC: Connect a fused power cable directly from the positive terminal of the vehicle's battery. The fuse should be located within 18 inches of the battery.
• GND: Connect a ground cable of the same gauge as the power cable to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection.
• REM (Remote): Connect a remote turn-on wire from your head unit's remote output. This wire signals the amplifier to turn on and off with your head unit.

5.2.2 Speaker Connections

Connect your subwoofer(s) to the speaker output terminals. This amplifier is a monoblock design, intended for a single channel output. Ensure the total impedance of your speakers matches the amplifier's rated impedance (2 Ohm for this model) for optimal performance and to prevent damage.

5.2.3 Input Connections (RCA or High-Level)

Image: Front panel of the Soundigital 1600.1 EVOX2 amplifier, displaying the RCA (L/R) inputs, High Input connector, Gain control, LP/HP filter switch, Low Pass, Subsonic, and Bass Boost controls, and the Remote Level Control port.

• RCA Input: For head units with RCA pre-outs, connect RCA cables from your head unit to the L and R RCA input jacks on the amplifier.
• High Input: If your head unit does not have RCA pre-outs, use the High Input connector. Connect the speaker-level outputs from your head unit to the corresponding terminals on the provided high-level input harness.

6. Operating Instructions and Adjustments

After installation, carefully adjust the amplifier settings for optimal sound quality and to protect your speakers.

6.1 Gain Control

The GAIN control matches the amplifier's input sensitivity to the output level of your head unit. Start with the gain set to minimum (MIN). Play a familiar track at about 75% of your head unit's maximum volume. Slowly increase the amplifier's GAIN until you hear distortion, then back it off slightly. This is not a volume control.

6.2 Crossover Settings

The EVOX2 features adjustable Low Pass Filter (LPF) and High Pass Filter (HPF) controls, along with a Subsonic filter.

• LPF (Low Pass Filter): This filter allows frequencies below the set point to pass through to the speakers. For subwoofers, typically set between 50Hz and 120Hz. Adjust this to blend smoothly with your main speakers.
• HPF (High Pass Filter): This filter allows frequencies above the set point to pass through. For this monoblock amplifier, the HPF acts as a subsonic filter, protecting your subwoofer from playing extremely low, inaudible frequencies that can cause damage. Set between 5Hz and 40Hz, typically around 20-30Hz for ported enclosures.
• LP/HP Switch: Selects between Low Pass (LP) and High Pass (HP) operation for the main crossover. For subwoofer applications, ensure this is set to LP.

6.3 Subsonic Filter

The SUBSONIC control works in conjunction with the HPF. It filters out frequencies below its set point, preventing your subwoofer from attempting to reproduce frequencies below its effective range, which can lead to distortion and damage. Adjust carefully based on your subwoofer and enclosure characteristics.

6.4 Bass Boost

The BASS BOOST control provides an adjustable boost at a specific low frequency. Use this sparingly and with caution. Excessive bass boost can lead to distortion and potential damage to your subwoofer. Start at 0dB and increase only if necessary, listening for any signs of distortion.

6.5 Remote Level Control

Connect the included remote level control to the 'REMOTE LEVEL CONTROL' port. This allows you to adjust the subwoofer output level from the driver's seat without affecting the amplifier's gain setting.

7. Maintenance

• Cleaning: Periodically clean the amplifier's exterior with a soft, dry cloth. Do not use harsh chemicals or solvents. Ensure ventilation fins are free from dust and debris.
• Inspection: Regularly check all wiring connections for tightness and corrosion. Ensure fuses are intact and correctly rated.
• Ventilation: Confirm that the amplifier's mounting location still provides adequate airflow. Blocked vents can lead to overheating and reduced performance.

8. Troubleshooting

If you experience issues with your amplifier, refer to the following common problems and solutions:

8.1 No Power / Amplifier Not Turning On

• Check Fuses: Verify the main power fuse near the battery and any fuses on the amplifier itself. Replace if blown with the correct rating.
• Power Connection: Ensure the +12 VDC wire is securely connected to the battery and the amplifier.
• Ground Connection: Confirm the GND wire has a solid, clean connection to the vehicle chassis.
• Remote Turn-On: Check the REM wire connection to the head unit and the amplifier. Ensure the head unit is powered on and sending a remote signal.

8.2 No Sound Output

• Input Signal: Verify RCA or high-level input cables are securely connected to both the head unit and the amplifier.
• Speaker Connections: Check speaker wires for proper connection to the amplifier and subwoofer, ensuring no shorts.
• Gain Setting: Ensure the gain control is not set to minimum.
• Head Unit Settings: Confirm the head unit's volume is up and the correct audio source is selected.

8.3 Distorted Sound

• Gain Setting: Reduce the gain control if it is set too high.
• Bass Boost: Decrease or turn off the bass boost.
• Crossover Settings: Adjust LPF and HPF settings to ensure they are appropriate for your subwoofer and enclosure.
• Speaker Impedance: Verify that the total speaker impedance matches the amplifier's rated impedance.

8.4 Amplifier Overheating

• Ventilation: Ensure the amplifier has adequate airflow around it. Clear any obstructions.
• Impedance: Check that the speaker impedance is not too low for the amplifier.
• Gain Setting: Reduce the gain setting if it is too high, causing the amplifier to work excessively.

9. Technical Specifications

10. Warranty Information

This product is sold as a renewed item. Warranty terms and conditions for renewed products may vary. Please refer to the specific warranty information provided by the seller at the time of purchase or contact the seller directly for details regarding your warranty coverage.

11. Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or the manufacturer directly. Keep your purchase receipt and product model number (16001EVOX2) readily available when seeking support.