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MA18K
Lightweight, High Power, High Performance Power Amplifier
ELECTRONICS

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

APPLICATIONS

  • Live sound reinforcement
    Fixed installations

Click pic for larger image
TECHNICAL SPECIFICATIONS
MAX OUTPUT POWER

EIA AT 1KHz AND 1% THD

8Ω PER CHANNEL 2700 W
4Ω PER CHANNEL 5200 W
2Ω PER CHANNEL 9000 W
16Ω BRIDGED 5400 W
8Ω BRIDGED 10400 W
4Ω BRIDGED 18000 W
DISTORTION  
THD FROM 0.1W TO FULL POWER

< 0.05% (typically)

INTERMODULATION SMPTE

< 0.05% (typically)

INTERMODULATION DIM 30 < 0.05% (typically)
SIGNAL TO NOISE 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
FRONT PANEL  

DISPLAY

Interactive LCD Matrix

INDICATORS

2 x Multi-function 7 segment LED Bargraph

MENU NAVIGATION

4 x Digital Push Button

NETWORK

2 x RJ45
DATA STORAGE & TRANSFER Smart Card Reader
REAR PANEL  

INPUT CONNECTORS

Neutrik XLR / 6.3mm (0.25ins) Jack Combo

OUPUT CONNECTORS

Neutrik Speakon

LINK SWITCH

Channel A-B Link

DATA PORT RS485 Via RJ45
POWER  
OPERATION VOLTAGE AC: 95-265V (50/60Hz)
DIMENSIONS  
WIDTH 483mm (19ins)
HEIGHT 48mm (1.75ins) 1U
DEPTH (incl. handles) 475mm (18.7ins)
WEIGHT 12kg (26.5lbs)
 
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All material © 2012. Copyright Martin Audio Ltd. Subject to change without notice. Martin Audio Ltd. Reg. No. 4824341
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