The Crown CDi 4000 is a high-performance 2-channel power amplifier designed for professional installed sound applications. With a robust 1200W per channel at 4 ohms, it provides the power and flexibility needed for large-scale sound systems in venues like theaters, houses of worship, stadiums, and more. Part of Crown's renowned CDi Series, this amplifier is engineered for reliability, offering intuitive operation, advanced protection circuitry, and unparalleled sound quality, making it a go-to choice for both music and voice reproduction in demanding environments.
The CDi 4000 features an intuitive front-panel LCD screen, allowing installers to easily navigate through various settings and configurations. This makes setup fast and straightforward, even for complex audio systems. With onboard digital signal processing (DSP), the CDi 4000 provides installers with advanced tools such as crossovers, equalization filters, delay, and output limiting, ensuring the best possible sound quality for any installation. This DSP functionality makes it possible to fine-tune the amplifier for different acoustics, speaker types, and system configurations.
Designed for versatility, the CDi 4000 supports a wide range of load impedances, making it suitable for low-impedance (2, 4, and 8 ohms) as well as high-impedance systems (70V and 140V). In dual-mode operation, the amplifier delivers 1600W at 2 ohms, 1200W at 4 ohms, and 650W at 8 ohms, along with 1000W at 70V. In bridge-mono mode, the CDi 4000 can provide up to 3200W at 4 ohms or 2000W at 8 ohms or 140Vrms, offering exceptional power for large-scale sound systems that require long cable runs or high speaker counts.
The CDi 4000 is built with Crown's reliable switch-mode universal power supply, which ensures consistent performance across a wide range of power environments. This makes it suitable for installations around the world, as it can handle 100-240V AC mains without the need for external transformers or voltage adapters. The amplifier also features proportional-speed fan-assisted cooling to maintain optimal operating temperatures even during extended use in high-demand situations, ensuring long-term reliability and preventing thermal shutdowns.
In addition to its robust power and advanced DSP features, the CDi 4000 offers comprehensive protection circuitry, including safeguards against short circuits, open circuits, mismatched loads, overheating, high-frequency overloads, and internal faults. This protection ensures that both the amplifier and connected speakers are safe from damage, even under challenging conditions. The amplifier also includes barrier strip outputs for low-impedance and high-impedance loads, along with removable Phnix-style inputs for fast, secure installation and easy integration into existing audio systems.
Designed to provide accurate, uncolored sound with extremely low distortion, the CDi 4000 delivers pristine audio quality across the full frequency range. Its total harmonic distortion (THD) is less than 0.05%, ensuring clear and precise sound reproduction. The amplifier also boasts a signal-to-noise ratio of 100dB, providing quiet, interference-free operation, while a damping factor greater than 500 ensures tight control over speaker movement, especially in the low-frequency range. The frequency response is +0dB, -1dB, offering consistent performance across the audible spectrum.
With its compact 2U rackmount design, the CDi 4000 fits easily into standard equipment racks, making it ideal for permanent installations. Despite its powerful capabilities, the amplifier weighs only 22 pounds, making it easy to handle and install in a variety of locations. Measuring 19 inches wide, 12.5 inches deep, and 3.5 inches tall, it takes up minimal rack space while delivering maximum performance.
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