Crown DCi 2|600 Power Amplifier User Manual
Model: DCi 600
1. Introduction
Thank you for choosing the Crown DCi 2|600 Two-Channel, 600W @ 4Ω Analog Power Amplifier. This manual provides essential information for the proper installation, operation, and maintenance of your amplifier. Please read this manual thoroughly before operating the unit to ensure safe and optimal performance.
The Crown DCi 2|600 is designed for professional audio installations, offering robust power delivery and reliable performance for a variety of applications, including commercial sound systems and fixed installations. It supports both low-impedance (4Ω) and high-impedance (70V/100V) output configurations.
2. Safety Information
Always observe the following safety precautions to prevent electric shock, fire, or damage to the unit:
- Power Source: Connect the amplifier only to the type of power source indicated on the unit.
- Grounding: Ensure the amplifier is properly grounded to prevent electric shock.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the unit.
- Moisture: Do not expose the amplifier to rain or moisture. Do not place objects filled with liquids on the unit.
- Servicing: Refer all servicing to qualified service personnel. Do not attempt to service this product yourself.
- Cleaning: Unplug the unit from the power outlet before cleaning. Use a dry cloth for cleaning.
3. Setup
3.1 Unpacking
Carefully remove the amplifier from its packaging. Inspect the unit for any signs of damage that may have occurred during shipping. Retain the original packaging for future transport or storage.
3.2 Physical Installation
The Crown DCi 2|600 is designed for standard 19-inch rack mounting. Ensure the rack is sturdy enough to support the amplifier's weight (approximately 18 pounds). Allow sufficient space around the unit for proper ventilation, especially at the front and rear.
Rack Mounting Steps:
- Secure the amplifier to the rack rails using appropriate rack screws.
- Ensure the front panel is flush with the rack for a secure fit.
- Avoid placing the amplifier directly above heat-generating equipment without adequate ventilation.
3.3 Connections
Before making any connections, ensure the amplifier is powered off and disconnected from the main power supply.
3.3.1 Audio Input Connections
Connect your audio source (e.g., mixer, preamplifier) to the amplifier's input connectors. The DCi 2|600 typically features balanced XLR or Phoenix-style input connectors. Use high-quality shielded cables to minimize noise.
3.3.2 Speaker Output Connections
The amplifier supports both low-impedance (4Ω) and high-impedance (70V/100V) speaker systems. Ensure your speakers are compatible with the selected output mode.
- Low-Impedance (4Ω): Connect speakers directly to the appropriate output terminals, ensuring correct polarity (+ to + and - to -).
- High-Impedance (70V/100V): For constant voltage systems, connect speakers to the designated 70V or 100V output terminals. Ensure the total wattage of connected speakers does not exceed the amplifier's output capability.
3.3.3 Power Connection
Once all audio and speaker connections are made, connect the supplied AC power cord to the amplifier's power inlet and then to a grounded electrical outlet. Verify that the voltage matches the amplifier's requirements (100 Volts or 70 Volts, as specified).
4. Operating
4.1 Powering On/Off
To power on the amplifier, press the power button located on the front panel. The power indicator light will illuminate. To power off, press the power button again. It is recommended to power off the amplifier before disconnecting any cables.
4.2 Front Panel Controls and Indicators
The front panel of the Crown DCi 2|600 provides essential controls and indicators for monitoring and basic operation.
Figure 1: Front view of the Crown DCi 2|600 Two-Channel Power Amplifier. This image shows the amplifier's front panel, featuring the Crown logo on the left grille, a central display panel, and the model number '2|600' on the right grille, alongside the power button with an illuminated ring.
- Power Button/Indicator: Turns the unit on/off and indicates power status.
- Input Level Controls: Adjust the input sensitivity for each channel.
- Signal/Clip Indicators: Indicate audio signal presence and clipping (overload) conditions.
- Thermal/Fault Indicators: Warn of overheating or other operational faults.
4.3 Basic Operation
- Ensure all connections are secure and correct.
- Power on the amplifier.
- Start with input level controls set to minimum.
- Play audio from your source and gradually increase the input level controls until the desired volume is achieved without the clip indicators illuminating frequently.
- Monitor the signal and clip indicators to prevent distortion and protect your speakers.
5. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your amplifier.
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosols.
- Ventilation: Periodically check that the ventilation openings are clear of dust and debris. Blocked vents can lead to overheating.
- Connections: Occasionally check all cable connections to ensure they are secure and free from corrosion.
6. Troubleshooting
If you experience issues with your amplifier, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord disconnected; Power outlet failure; Blown fuse | Check power cord connection; Test power outlet; Replace fuse (if accessible and safe to do so, otherwise contact service) |
| No sound output | Input cables disconnected; Speaker cables disconnected/incorrectly wired; Input level too low; Source device off/muted | Check all audio and speaker connections; Increase input level; Verify source device operation |
| Distorted sound | Input level too high (clipping); Speaker impedance mismatch; Damaged speaker | Reduce input level; Verify speaker impedance matches amplifier output; Test speakers individually |
| Amplifier overheating (Thermal indicator on) | Insufficient ventilation; Overloaded output | Ensure proper airflow around the unit; Reduce load or operating volume; Allow unit to cool down |
If the problem persists after attempting these solutions, please contact Crown customer support or a qualified service technician.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Crown |
| Model Number | DCi 600 |
| Number of Channels | 2 |
| Output Power | 600W @ 4Ω (per channel, typical) |
| Voltage Compatibility | 100 Volts, 70 Volts (for constant voltage systems) |
| Mounting Type | Surface Mount (designed for 19-inch rack mounting) |
| Package Dimensions | 22.4 x 20.7 x 7.5 inches |
| Item Weight | 18 Pounds |
8. Warranty and Support
Crown products are designed for reliability and performance. For information regarding warranty coverage, technical support, or service, please refer to the official Crown website or contact your authorized dealer.
It is recommended to register your product upon purchase to facilitate warranty claims and receive important product updates.
For the most current support information, visit the official Crown website: www.crownaudio.com
