D&B D40 amplifier

D&B audiotechnik D40 – 4-Channel DSP Amplifier

The D40 is a high-efficiency, four-channel Class-D amplifier tailored for modern d&b systems. It features integrated DSP, robust output power, and advanced energy-saving capabilities, making it ideal for touring and installation environments.

Key Features

• Channels: 4 independent amplifier channels
• Output Power:
  • Up to 2400 W per channel @ 4 ohms
  • Up to 2000 W per channel @ 8 ohms
• Peak Voltage: 180 V
• Peak Current: 35 A
• Total Output Power: 9600 W (at 12 dB crest factor)

DSP and Signal Processing

• High-performance 96 kHz DSP with:
  • 16-band EQ per channel (parametric, shelving, notch, asymmetric filters)
  • Up to 10 seconds of delay per channel
  • Adjustable crossover and limiting
• Precise speaker tuning via presets
• Built-in LoadMatch compensates for long speaker cable runs (up to 70 m)

Connectivity

• Inputs:
  • 4 × analog XLR inputs
  • 2 × AES3 digital inputs (4 channels total)
• Outputs:
  • 4 × NL4 speaker outputs
  • 1 × NL8 mode supporting all 4 channels on one connector
• Control:
  • 4.3″ color touchscreen with rotary encoder
  • Dual Gigabit Ethernet ports (OCA/AES70 protocol compatible)
  • Web browser access and remote control via R1 software

Protection and Power

• Intelligent system protection includes:
  • Overcurrent
  • Thermal shutdown
  • DC offset
  • HF voltage limiting
• Power supply:
  • Auto-ranging SMPS with Power Factor Correction
  • Input range: 100–240 V AC
• Energy-saving features:
  • Automatic wake-up
  • Standby power consumption: ~12 W
  • Idle power: ~130 W

Physical & Mechanical

• Rack Size: 2U
• Depth: Approx. 465 mm
• Weight: 13.8 kg
• Cooling: Variable-speed fan cooling system

Application & Use Cases

• Optimized for use with d&b Y-Series, V-Series, and KSL loudspeakers
• Touring, corporate AV, houses of worship, and fixed installations
• Excellent for systems needing scalable, multi-zone amplification with minimal setup time
• Supports mix TOP/SUB modes and automatic analog/digital failover