1. Introduction
Thank you for purchasing the Crunch PX 2000.1D Monoblock Car Amplifier. This manual provides detailed instructions for the proper installation, operation, and maintenance of your amplifier. Please read this manual thoroughly before attempting installation or operation to ensure optimal performance and safety.
2. Important Safety Instructions
- Professional Installation Recommended: For optimal performance and safety, it is highly recommended to have this amplifier installed by a qualified professional.
- Power Connections: Ensure all power connections are secure and properly fused. Incorrect wiring can cause damage to the amplifier, vehicle, or result in fire.
- Ventilation: Mount the amplifier in a location that allows for adequate air circulation to prevent overheating. Do not cover the amplifier with carpets or other materials.
- Grounding: Always connect the ground terminal directly to the vehicle's chassis using the shortest possible cable.
- Volume Levels: Prolonged exposure to high volume levels can cause permanent hearing damage. Use caution when adjusting volume.
- Water and Moisture: Do not expose the amplifier to water or excessive moisture.
3. Product Overview
3.1 Features
- Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification process.
- Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path.
- Easily tie into OEM audio systems that do not offer RCA output to maximize aftermarket amplifier power.
3.2 Amplifier Components
The Crunch PX 2000.1D is a 1-channel monoblock amplifier designed for powerful bass reproduction. It features a robust chassis and a comprehensive set of controls for fine-tuning your audio system.
Image 3.2.1: Crunch PX 2000.1D Monoblock Car Amplifier with included remote level control. This image displays the amplifier from an angled top-front perspective, showcasing its black finish, red accents, and the Crunch logo. The remote level control is also visible in the foreground.
Image 3.2.2: Top view of the Crunch PX 2000.1D amplifier. This image provides a clear overhead view of the amplifier's top panel, highlighting the Crunch brand name and the '2000 WATTS' power rating.
Image 3.2.3: Close-up of the remote level control. This image focuses on the small, black remote control unit, showing its rotary knob with 'MIN' and 'MAX' labels for adjusting subwoofer output.
4. Setup and Installation
4.1 Before You Begin
- Disconnect the vehicle's negative battery terminal before starting any wiring.
- Plan your wiring route to avoid interference with vehicle electronics and moving parts.
- Ensure all cables are of appropriate gauge for the power requirements.
4.2 Wiring Connections
Refer to the following images for proper connection points on the amplifier.
Image 4.2.1: Rear panel connections. This image displays the rear terminal block of the amplifier, clearly showing the connections for GND (Ground), REM (Remote Turn-On), +12V (Power), Speaker Output, and the FUSE holders.
Image 4.2.2: Front panel controls. This image shows the input and control side of the amplifier, detailing the Input Sensitivity switch, Subsonic Filter, Line Input (RCA), Line Output (RCA), Low Pass Filter, Bass Boost, Remote port, and Phase Shift switch.
4.2.1 Power, Ground, and Remote Turn-On
- +12V (Power): Connect to the positive terminal of the vehicle's battery via a fused power cable. The fuse should be located within 18 inches of the battery.
- GND (Ground): Connect to a clean, unpainted metal surface of the vehicle's chassis. Use the shortest possible cable.
- REM (Remote Turn-On): Connect to the remote output of your head unit. This wire turns the amplifier on and off with your stereo.
4.2.2 Speaker Output
Connect your subwoofer(s) to the speaker output terminals. Ensure correct polarity (+ to + and - to -) for optimal performance. This is a monoblock amplifier, designed for a single channel output.
4.2.3 RCA Input
Connect the RCA cables from your head unit's subwoofer output to the 'LINE INPUT' RCA jacks on the amplifier.
4.3 Mounting
Choose a mounting location that is dry, well-ventilated, and secure. Avoid mounting the amplifier directly to carpet or in enclosed spaces that restrict airflow. Ensure the mounting surface is strong enough to support the amplifier's weight.
5. Operating Instructions
5.1 Controls and Adjustments
The Crunch PX 2000.1D amplifier features several controls to optimize its performance with your audio system. These controls are located on the front panel (refer to Image 4.2.2).
- Input Sensitivity (Gain): This control matches the amplifier's input level to the output level of your head unit. Start with the gain at minimum and slowly increase it until you hear distortion, then back off slightly.
- Subsonic Filter: This filter removes extremely low frequencies that are inaudible and can waste amplifier power. Adjust it to protect your subwoofer from over-excursion.
- Low Pass Filter (LPF): This filter allows only frequencies below the set point to pass through to the subwoofer. Adjust it to blend the subwoofer's output with your main speakers.
- Bass Boost: This control provides an adjustable boost at a specific bass frequency. Use sparingly to avoid distortion.
- Phase Shift: This switch (0°/180°) helps to align the phase of the subwoofer's output with the rest of your audio system, improving bass impact and clarity.
- Remote Level Control: The included remote level control (Image 3.2.3) allows for convenient adjustment of the subwoofer's output level from the driver's seat.
6. Maintenance
The Crunch PX 2000.1D amplifier requires minimal maintenance. Keep the amplifier clean and free of dust and debris. Periodically check all wiring connections to ensure they are secure. Do not use harsh chemicals or abrasive cleaners on the amplifier's surface.
7. Troubleshooting
If you experience issues with your amplifier, consult the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier does not turn on | Blown fuse, poor power/ground connection, no remote turn-on signal. | Check fuses (on amplifier and near battery). Verify +12V, GND, and REM connections. Ensure head unit is on and sending a remote signal. |
| No Sound | No input signal, speaker wires disconnected, amplifier in protect mode. | Check RCA input cables. Verify speaker connections. If protect light is on, check for shorted speaker wires or impedance mismatch. |
| Distorted Sound | Gain set too high, improper filter settings, poor input signal. | Reduce gain. Adjust LPF and Subsonic filter settings. Check RCA cables for damage or interference. |
| Amplifier Overheats | Insufficient ventilation, impedance too low, prolonged high volume. | Ensure adequate airflow around the amplifier. Check speaker impedance. Reduce volume or allow amplifier to cool. |
8. Specifications
The following table outlines the key specifications for the Crunch PX 2000.1D amplifier:
| Specification | Value |
|---|---|
| Model | PX 2000.1D |
| Output Power | 2000 Watts (Peak) |
| Number of Channels | 1 |
| Voltage | 16 Volts (Max) |
| Item Dimensions (L x W x H) | 19 x 3 x 11 inches |
| Item Weight | 6 pounds |
| Mounting Type | Surface Mount |
| UPC | 806576225355 |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official Crunch Audio website. Warranty terms and conditions may vary by region and retailer.
If you require technical assistance or have questions not covered in this manual, please contact Crunch customer service through their official channels.
