Crown DCi 4|1250 - 1250W 4-Channel at 4-Ohm 70V/100V Analog Power Amplifier

The Crown DCi 4|1250 is a powerful and versatile 4-channel analog power amplifier designed for professional installed sound applications. Delivering 1250W per channel at 4 ohms, it is ideal for large-scale installations such as auditoriums, theaters, houses of worship, and hospitality venues. Part of the Crown DriveCore Install (DCi) Series, this amplifier leverages Crown's exclusive DriveCore technology, which integrates hundreds of discrete components into a single chip, reducing power consumption, improving reliability, and ensuring top-tier performance. This high-efficiency Class D amplifier offers unparalleled sound quality, advanced protection features, and flexible connectivity options, making it a go-to solution for system integrators.

The DCi 4|1250 features direct drive capability for both low-Z and high-Z (70V/100V) operation on a per-channel basis, eliminating the need for transformers and reducing wiring complexity. This allows it to easily drive both conventional low-impedance loudspeakers and high-impedance distributed audio systems, making it highly adaptable for a variety of applications. The amplifier's output power can also be bridged for higher power applications, with the ability to deliver up to 2500W per channel in bridge-mono mode at 4 ohms or 200Vrms, providing the flexibility to handle the most demanding audio setups.

One of the standout features of the DCi 4|1250 is its advanced power management capabilities. The amplifier includes a power-saving mode that consumes less than 1W in sleep mode, and an auto-standby feature that automatically powers down the amplifier after 30 minutes of inactivity. These energy-saving modes help reduce operational costs and make the amplifier environmentally friendly. Additionally, the amplifier can be remotely powered on or off via the AUX port, offering further control and integration with automated systems. It also complies with Harman's Green Edge initiative, which emphasizes eco-friendly design and manufacturing processes.

The DCi 4|1250 is equipped with a robust protection system to ensure long-term reliability and safety. Crown's patented Total Linear Control (TLC) protection monitors thermal conditions and applies gain reduction when needed to prevent overheating while maintaining optimal performance. Advanced protection circuits safeguard against shorted outputs, DC offset, mismatched loads, overheating, over- or under-voltage, and high-frequency overloads. These protections ensure the amplifier continues to operate safely in demanding environments while preserving the integrity of the connected audio system.

In terms of audio performance, the DCi 4|1250 excels with a signal-to-noise ratio greater than 108dB, ensuring crystal-clear sound reproduction. The frequency response is exceptionally flat, with a variation of just ±0.25dB across the audio spectrum, guaranteeing accurate sound with minimal coloration. The total harmonic distortion (THD) is rated at 0.35%, allowing for high-fidelity audio output, while the damping factor exceeds 1500, providing tight and controlled bass response. These attributes make the DCi 4|1250 an ideal choice for applications where audio clarity and precision are critical.

To further enhance its performance, the DCi 4|1250 includes an advanced PFC (Power Factor Correction) power supply, which ensures the amplifier consistently delivers its rated power regardless of fluctuations in the input voltage. The universal power supply supports a wide range of AC mains voltages (100V-240V, 50/60Hz), making the amplifier suitable for use in various regions around the world. This ensures the amplifier operates efficiently and reliably, even in areas with inconsistent power supply.

The amplifier is housed in a 2U rackmount chassis that is both lightweight and compact, measuring 19 x 17 x 3.5 inches and weighing just 30 lbs. Despite its small form factor, the amplifier delivers exceptional power density, with a cooling system that uses continuously variable-speed forced air to direct airflow from front to back, ensuring optimal thermal management. The cooling system minimizes fan noise (47 dB max), making the amplifier suitable for installations where low noise is essential, such as in conference rooms or performance venues.

The DCi 4|1250 is designed for easy installation and integration, featuring barrier strip outputs for low-Z and high-Z speaker systems and removable Phnix-style inputs for flexible connectivity. The AUX port provides additional integration options, allowing system integrators to monitor amplifier faults and control power remotely. Additionally, the amplifier includes several onboard DSP features such as crossovers, EQ filters, delay, and output limiting, offering a high degree of customization for tuning the system to the specific acoustics of the installation environment.

Overall, the Crown DCi 4|1250 is a highly versatile and energy-efficient power amplifier that delivers exceptional performance for large-scale installations. Whether driving distributed audio systems or conventional loudspeakers, it offers the flexibility, reliability, and sound quality that professional audio engineers expect from Crown amplifiers.

Features

• 1250W per channel at 4 ohms, with support for both low-Z and high-Z (70V/100V) systems
• Bridge-mono mode delivers up to 2500W per channel at 4 ohms or 200Vrms
• Exclusive DriveCore technology for improved performance and reduced power consumption
• Power-saving modes include auto-standby and remote power-off for energy efficiency
• Advanced protection circuits guard against short circuits, DC offset, overheating, and more
• High signal-to-noise ratio (>108dB) for clear and accurate sound reproduction
• Compact 2U rackmount design (19 x 17 x 3.5 inches) weighing 30 lbs
• Continuously variable-speed forced air cooling with low noise (47 dB max)
• Advanced PFC universal power supply ensures consistent power delivery
• Output Power (Dual Mode): 1250W (2, 4, 8 Ohm), 625W (16 Ohm), 1250W (70V/100V)
• Output Power (Bridge Mono Mode): 2500W (4 Ohm), 2500W (8 Ohm), 2500W (140V/200V)
• Frequency Response: ±0.25dB, Total Harmonic Distortion: 0.35%, Damping Factor: >1500

Specifications

• Output Power (Dual Mode): 1250W (2 Ohm), 1250W (4 Ohm), 1250W (8 Ohm), 625W (16 Ohm), 1250W (70Vrms), 1250W (100Vrms)
• Output Power (Bridge Mono Mode): 2500W (4 Ohm), 2500W (8 Ohm), 2500W (16 Ohm), 2500W (140Vrms), 2500W (200Vrms)
• Frequency Response: ±0.25dB
• Signal to Noise Ratio: >108dB
• Total Harmonic Distortion: 0.35%
• Voltage Gain: 34dB
• Damping Factor: >1500
• Input Impedance: 10kOhm, 5kOhm
• Maximum Input Level (Before Compression): +20dBu
• Maximum Input Level (Before Clipping): +26dBu
• Load Impedance (Stereo/Dual Mode): 2 Ohm to 16 Ohm; 70Vrms and 100Vrms
• Load Impedance (Bridge Mono): 4 Ohm to 16 Ohm; 140Vrms and 200Vrms
• Cooling: Continuously variable speed forced air, front to back airflow
• Maximum Fan Noise: 47 dB
• Required AC Mains: 100V-240Vrms, 50/60Hz
• IEC Power Connector: 20A IEC
• Weight: 30 lbs
• Dimensions: 19 x 17 x 3.5 inches