CROWN CDi 4|300BL - Analog input amplifier + Blu Link, 4 channels, 300W per output channel

CROWN CDi 4|300BL – Analog input amplifier + BLU Link™, 4 channels, 300 W per channel

The CROWN CDi 4|300BL is a four-channel installation amplifier delivering 300W per channel into 4Ω and up to 600W bridged into 8Ω , featuring DriveCore™ technology for over 90% efficiency. It features HARMAN’s BLU Link™ digital bus, allowing up to 256 channels of low-latency audio to be sent and received over Cat5e cable, and features a powerful DSP with LevelMAX™ limiters, 8-band parametric EQs, crossover, and delays up to 1000ms input and 100ms output for perfect installation tailoring.

Main features

• 4 independent channels of 300 W @ 4 Ω, 150 W @ 2 Ω, 300 W @ 8 Ω; 300W bridged @ 4Ω; 600W bridged @ 8Ω
• BLU Link™ HARMAN: Up to 256 channels of low-latency digital audio over Cat5e
• Integrated DSP : input router; delays 0–1000 ms (input) / 0–100 ms (output); 8-band I/O parametric EQ; crossover; LevelMAX™ limiters
• Network control and monitoring via HiQnet™ over TCP/IP
• Front interface with color LCD display and dedicated buttons for on-site adjustment
• Direct output 70 V/100 V without additional transformer
• Front indicators : power, signal, clip and fault
• Variable speed proportional fan cooling
• Universal power supply with active power factor correction (100–240 VAC)
• Impedance selection 2–16 Ω or 70 V/100 V channel-by-channel mode

Product benefits

• High power density: 4 channels of 300 W in just 2 U of rack space.
• Quick Deployment: Pre-configured JBL presets and BLU Link™ make getting started quick.
• Total flexibility: full DSP and direct outputs in low and high impedance without transformers.
• Centralized control: remote monitoring and adjustments with HiQnet™.
• Quiet Operation: Variable ventilation and high-efficiency design minimize noise.

Use cases

• Background music and paging installations in restaurants, shops, and small auditoriums.
• Public address and voice evacuation systems in hotels and corporate buildings.
• Audio distribution in worship halls and medium-sized convention centers.

Frequently Asked Questions

• How does BLU Link™ work? It transmits digital audio and DSP data over Cat5e cable with latency < 1 ms.
• Does it require a 70V/100V transformer? No; the high-voltage output is native without the need for external transformers.
• What limiters does it include? LevelMAX™ Suite for intelligent speaker protection and maximum dynamics.

Description for projects

4×300 W @ 4 Ω (up to 600 W bridged @ 8 Ω and 300 W @ 70/100 V) 2U rack amplifier, BLU Link™, DSP with delays, EQ I/O, crossover, LevelMAX™, HiQnet™ TCP/IP, programmable GPIOs, variable cooling, 100–240 VAC PFC power supply; 483×89×356 mm; 7.3 kg.