Quest PB-4300D 4 Channel Class D Power Amplifier - 4 x 300W

Quest PB-4300D 4 Channel Class D Power Amplifier - 4 x 300WThe Quest Commercial PB 4120D and PB 4300D are versatile and efficient Class D, digital multi channel power amplifiers of advanced design, able to drive 70 100 V line loudspeaker systems directly as well as low impedance 4 8ohms speaker loads. The PB 4120D can deliver 120 watts RMS per channel, and the PB 4300D can deliver 300 watts RMS per channel. The PB Series advanced technology, clear sound, lightweight and reliable performance makes it ideal for

The Quest Commercial PB-4120D and PB-4300D are versatile and efficient Class D, digital multi-channel power amplifiers of advanced design, able to drive 70/100 V-line loudspeaker systems directly as well as low impedance 4/8ohms speaker loads. The PB-4120D can deliver 120 watts RMS per channel, and the PB-4300D can deliver 300 watts RMS per channel. The PB-Series advanced technology, clear sound, lightweight and reliable performance makes it ideal for any distributed sound system installation.

Features

• The amplifiers deliver either 120W or 300W of clean power per channel at 70/100V and 4 Ohms
  
• Class D amplifier operating at 85% efficiency using switching power supplies. The
• PB-Series amplifiers generate virtually no heat, thanks to their low current draw.
  
• Built-in70/100V output transformers with flat frequency response from 40Hz to
• 20kHz provide constant voltage for distributed speaker systems.
  
• Independent input level controls for each channel allow precise adjustments.
  
• Clean, crisp sound – Impressive audio specifications such as < 0.3% THD, dynamic range of 105 dB, crosstalk of > 70 dB, and frequency response of 50 Hz to 18 kHz guarantee ultra-clean sound quality.
  
• LED signal indicators for each channel continuously display power output levels and allow you to correct for overloading (clipping) conditions.
  
• Forced air cooling via internal fan provides reliable performance without thermal and overheating problems.
  
• Input connections for each channel are made using Euroblock connectors to accommodate both balanced and unbalanced signals sources.
  
• Output connections for each channel are made using Euroblock connectors which accept 12 gauge wire.
  
• CSA/UL approved.
  
• Class D & switching power supply
  
• PB-4120D @ 120V / 5.8A
  
• PB-4300D @ 120V / 13.9A
  
• The PB-Series amplifiers can be mounted in any standard 19” rack (taking just two rack spaces), making it easy to integrate into any fixed or traveling PA rig.
  
• Housed in a double rack space (2RU) 19” rack mounting housing.
  
• Three-year warranty.

Specifications

• Rated Power (1kHz, 1%THD+N )
  
• 300W x4 (70/100V)
  
• 150W x4 (8Ω)
  
• 300W x4 (4Ω)
  
• Output Impedance: 4Ω, 100V (33.3 Ω) or 70V (16.3 Ω)
  
• Input Sensitivity: 1Vrms
  
• Input Impedance: 10KΩ Balanced
  
• Frequency Response: 50Hz - 18kHz
  
• Total Harmonic Distortion + Noise: < 0.3%
  
• Signal to Noise Ratio: > 90 dB
  
• Common Model rejection: 70 dB
  
• Crosstalk: > 70 dB
  
• High-Pass filter switch: 400 Hz
  
• Protection: DC-Short Circuit, Over Heating, Overload
  
• Cooling system: Temperature controlled fan
  
• Amplifier Technology: Class D
  
• Power supply: 120V AC, 50/60Hz
  
• Weight (Net): 21.4 lb3 (9.7 Kg)
  
• Unit Dimension (WxHxD): 19 x 14.75 x 3.5 in (483 x 375 x 89mm)