1. Introduction
Thank you for choosing the Excalibur X600-4 4-Channel Car Amplifier. This amplifier is designed to provide stable and controlled power for various automotive audio systems, ensuring clear and reliable sound reproduction. This manual provides essential information for proper installation, operation, and maintenance of your amplifier.
2. Safety Information
Please read all instructions carefully before installing and operating the amplifier. Failure to follow these guidelines may result in damage to the amplifier, vehicle, or personal injury.
- Always disconnect the vehicle's battery negative terminal before starting any electrical work.
- Ensure proper grounding for the amplifier to prevent electrical issues.
- Use appropriate wire gauges for power, ground, and speaker connections as specified.
- Avoid mounting the amplifier in areas exposed to moisture or excessive heat.
- Securely mount the amplifier to prevent movement during vehicle operation.
- If you are unsure about any installation steps, consult a professional car audio installer.
3. Package Contents
Verify that all items are present in the package:
- Excalibur X600-4 4-Channel Car Amplifier
- 4 Mounting Screws
- 2 Spare Fuses (25A)
- User Manual (this document)
4. Product Overview
The Excalibur X600-4 is a versatile 4-channel amplifier designed for enhanced in-car audio. It features:
- Maximum Power Output: 2400 Watts
- RMS Power Output: 4 x 60 Watts RMS at 4 Ohms
- Bridgeable Mode: 2 x 180 Watts RMS at 4 Ohms
- 2 Ohm Stable Operation
- Variable High-Pass and Low-Pass Filters
- Frequency Response: 20Hz – 20kHz
- Signal-to-Noise Ratio: >88dB
- Input Sensitivity: 150mV to 8V
- Low Total Harmonic Distortion: <0.1%
Amplifier Layout
Below are images illustrating the amplifier's design and connection points.
Figure 4.1: Top view of the Excalibur X600-4 amplifier, showcasing its brushed metal finish and branding.
Figure 4.2: Rear panel of the Excalibur X600-4 amplifier, showing power, ground, remote, fuse, speaker terminals, and RCA input/output connections, along with crossover and gain controls.
Figure 4.3: Graphic highlighting key features such as high power output, flexible tri-mode design, and wide frequency range.
5. Setup and Installation
Proper installation is crucial for optimal performance and safety. Follow these general steps:
- Mounting: Choose a dry, well-ventilated location in your vehicle, away from direct sunlight or heat sources. Secure the amplifier using the provided mounting screws. Ensure adequate space around the amplifier for air circulation.
- Power Connection:
- Connect the main power cable (typically 8-gauge or larger, depending on total system power) from the vehicle's positive battery terminal to the amplifier's "+12V" terminal. Install an in-line fuse holder (not supplied) within 18 inches (45 cm) of the battery.
- Connect the ground cable (same gauge as power cable) from the amplifier's "GND" terminal to a clean, unpainted metal surface on the vehicle chassis. Ensure a solid electrical connection.
- Connect the remote turn-on wire from your head unit's remote output to the amplifier's "REM" terminal. This wire turns the amplifier on and off with your head unit.
- Audio Input Connection:
- Connect RCA cables from your head unit's pre-amp outputs to the amplifier's "INPUT" RCA jacks (Front and Rear).
- The amplifier's input sensitivity ranges from 150mV to 8V, making it compatible with most aftermarket and some factory head units.
- Speaker Connection:
- Connect your speakers to the amplifier's speaker terminals. Pay close attention to polarity (+ and -).
- For 4-channel operation, connect one speaker per channel.
- For bridged operation (e.g., for a subwoofer), connect speakers to the designated "BRIDGE" terminals as indicated on the amplifier (refer to Figure 4.2). The amplifier is stable down to 2 Ohms in stereo mode and 4 Ohms in bridged mode.
- Initial Setup: Before turning on the system, double-check all connections. Set all gain controls to minimum and crossover settings to "FULL" or a suitable starting point.
6. Operating Instructions
Once installed, adjust the amplifier settings for optimal sound quality.
- Gain Control (GAIN): This matches the amplifier's input sensitivity to your head unit's output. Start with the gain at minimum. 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 off slightly.
- Crossover Filters (HPF/LPF/FULL):
- HPF (High Pass Filter): Allows frequencies above the set point to pass through. Use for full-range speakers to prevent low bass distortion.
- LPF (Low Pass Filter): Allows frequencies below the set point to pass through. Use for subwoofers.
- FULL: Disables the crossover, allowing all frequencies to pass.
- Bass Boost (BASS BOOST): This control provides an increase in bass output at a specific frequency. Use sparingly to avoid distortion and speaker damage.
7. Specifications
Detailed technical specifications for the Excalibur X600-4 amplifier:
Figure 7.1: Graphic summarizing key performance specifications of the amplifier.
| Feature | Specification |
|---|---|
| Model | X600.4 |
| Channels | 4 |
| Max Power Output | 2400 Watts |
| RMS Power (4 Ohms) | 4 x 60 Watts |
| RMS Power (Bridged, 4 Ohms) | 2 x 180 Watts |
| Minimum Impedance | 2 Ohms (Stereo) |
| Frequency Response | 20Hz - 20kHz |
| Signal-to-Noise Ratio | >88dB |
| Total Harmonic Distortion (THD) | <0.1% |
| Input Sensitivity | 150mV - 8V |
| High Pass Filter (HPF) | Variable |
| Low Pass Filter (LPF) | Variable |
| Recommended Fuses | 2 x 25A |
| Dimensions (L x W x H) | 365 x 220 x 48 mm (approx. 14.4 x 8.7 x 1.9 inches) |
| Weight | 2 Kilograms |
| Material | Metal |
Figure 7.2: Diagram illustrating the approximate dimensions of the amplifier.
8. Troubleshooting
If you experience issues with your amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier Not Turning On | Blown fuse, poor power/ground connection, remote wire disconnected. | Check and replace fuses (use 25A). Verify all power, ground, and remote wire connections are secure and have proper voltage. |
| No Sound Output | RCA cables disconnected, speaker wires disconnected/shorted, gain too low, head unit issue. | Ensure RCA cables are connected. Check speaker wire connections and for any shorts. Increase gain slowly. Test with another audio source. |
| Distorted Sound | Gain set too high, improper crossover settings, poor speaker connection, damaged speakers. | Reduce gain. Adjust crossover settings. Check speaker connections and impedance. Test speakers with another amplifier if possible. |
| Amplifier Overheating | Insufficient ventilation, impedance too low, prolonged high volume use. | Ensure adequate airflow around the amplifier. Verify speaker impedance matches amplifier's capabilities. Reduce volume or allow cooling time. |
9. Maintenance
The Excalibur X600-4 amplifier requires minimal maintenance to ensure long-term performance.
- Keep the amplifier clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Ensure that the cooling fins are not obstructed to maintain proper heat dissipation.
- Periodically check all wiring connections for tightness and corrosion.
10. Warranty and Support
The Excalibur X600-4 amplifier comes with a two-year warranty, ensuring durable use and reliable operation. For technical support or warranty claims, please contact your authorized Excalibur dealer or visit the official Excalibur website.
Please retain your proof of purchase for warranty service.
