Wharfedale Pro DR-4800

Wharfedale Pro DR-4800 - Class D power amplifier with 2 channels, offering a power of 2500 W per channel at 4 Ohms. It is rack-mountable, measuring 2U (units) and is equipped with XLR and speakON™ connections, adjustable input sensitivity, and operating modes Stereo, Bridge, and Parallel, providing flexibility in configuration.

Features:

• Class D amplifier with a massive toroidal transformer 
• Power: 2 × 1450 W at 8 Ω / 2 × 2500 W at 4 Ω / 1 × 3500 W at 8 Ω (Bridge)
• 2U metal rack housing
• Complete protection circuits against short circuits, overheating, and power issues
• Front LEDs for monitoring amplifier status (Power, Clip, Fault)
• “Breaker” button on the rear panel for quick reset after an external fault
• Balanced XLR inputs and outputs, plus 2 XLR Link outputs for daisy chain connection
• Input sensitivity switch: 0.775 V / 1 V / 35 dB
• Selectable operating modes: Stereo, Bridge, and Parallel
• Frequency response: 20 Hz – 20 kHz, with low distortion (THD < 0.05%)

Specifications:

• Class D power amplifier with 2 channels
• Power:
  • 2 × 1450 W at 8 Ω
  • 2 × 2500 W at 4 Ω
  • 1 × 3500 W at 8 Ω (Bridge)
• Massive toroidal transformer
• THD+N: < 0.05 %, 20 Hz - 20 KHz
• Gain at maximum volume (0.775 V): 42.5 dB
• Damping factor (8 Ω / 100 Hz): >300
• S/N ratio (1 ch. @ THD=1%, A Weighted): >108 dB
• Technology: Class D
• Crosstalk: -75 dB (1 KHz), -60 dB (10 KHz)
• Sensitivity / Fixed Gain at input: 0.775 V / 1 V / 35 dB
• Input impedance: 20 kΩ, 10 kΩ
• Connectivity:
  • Inputs: 2 x balanced XLR per channel
  • Outputs: 2 × speakON™
• Protection: Short circuit protection circuit, operation without load, turn-on/off noise, and radio interference
• Ventilation: Internal air exhaust from front to back for heat dissipation
• Cooling: Fan cooling, which quickly adjusts speed according to temperature; thermal protection included
• AC power supply: 100-120 V or 200-240 V ~ 50/60 Hz
• Dimensions (L x H x D): 482 mm x 89 mm x 410 mm
• Weight: 17.6 kg