Martin Audio MA18K Lightweight, High Power, High Performance Power Amplifier

Martin Audio MA18K Lightweight, High Power, High Performance Power Amplifier

The MA18K is one of three models extending the range of the renowned MA Series power amplifiers. The MA18K utilises the Pulse Width Modulation principal in combination with a high efficiency two stage switching power supply to deliver true class D operation with unparalled sonic performance and hitherto unobtainable power delivery.
The MA18K operates at an astonishing 95% efficiency virtually regardless of output power, occupies only 1U of rack space and is a mere 12kg (26.5lbs) in weight.

Features : 

• Worldwide mains operating voltage
• Power Factor Correction
• Over-temperature forecasting
• Thermal, short-circuit and overload protection
• Temperature controlled air cooling system
• Clip and permanent signal limiter
• Digital gain attenuation
• User selectable maximum output power
• User selectable maximum mains current draw
• PC remote control, monitoring and diagnostics

Specifications :

• Max output power (EIA at 1KHz and 1% THD) :
  • 8Ω per channel : 2700W
  • 4Ω per channel : 5200W
  • 2Ω per channel : 9000W
  • 16Ω bridged : 5400W
  • 8Ω bridged : 10400W
  • 4Ω bridged : 18000W
• Distortion :
  • THD from 0.1W to full power : < 0.05% (typically)
  • Intermodulation SMPTE : < 0.05% (typically)
  • Intermodulation DIM 30 : < 0.05% (typically)
• S/N ratio : >110dBA (20Hz to 20KHz)
• Damping factor (8 ohm) : > 5000 (20Hz to 20KHz)
• Output impedance : 60mΩ (User Selectable with KDSP option)
• Slew rate : 50V/µs
• Inputs :
  • Gain selectable (dB) : 26, 29, 32, 35
  • Impedance : 10KΩ
• Rear panel :
  • Input connectors :
    • Neutrik XLR / 6.3mm (0.25ins)
    • Jack Combo
  • Output connectors :
    • Neutrik Speakon
    • Link switch : Channel A-B Link
    • Data ports : RS485 Via RJ45