Martin Audio IK42 4-Channel 20000W Class D Power Amplifier

The iKON iK42 is an advanced 4-channel power amplifier which combines very high power density with superb audio performance, state-of-the-art DSP and network control. A dedicated controller amplifier for Martin Audio Wavefront Precision line arrays and XE Series stage monitors, the iK42 can also provide multi-channel amplification across the Martin Audio loudspeaker range.

The iK42 can deliver a full 5000 watts per channel into 2Ω with all channels driven while remaining highly efficient. Its high efficiency reduces the energy drawn from the mains supply and ensures the power reserves needed to deliver superb sound under arduous live conditions.

Ethernet is used for system remote control and monitoring via Martin Audio’s VU-NET software application, while a user friendly front panel interface allows full local control of all features. Dante digital audio network inputs are also provided for digital audio distribution and control.

Powerful DSP is fully integrated into the iK42 to provide a multitude of features that ensure maximum performance and worldwide compatibility of XE monitors. It also provides up to 1000 FIR filter taps @ 48kHz on each output channel, which is essential to implement DISPLAY’s wide bandwidth optimisation process in WP line array systems.

The iK42 employs comprehensive protection functions to maintain safe operating conditions of both the amplifier and the loudspeakers driven — including a sophisticated loudspeaker limiter suite which incorporates peak, RMS and excursion limiting, as well as multiband limiting for passive 2-way systems.

Applications
Dedicated system amplifier for Martin Audio Wavefront Precision Series and XE Monitor Series
Versatile multi-channel amplification for Martin Audio loudspeaker systems

Key Features

• Four channels of efficient Class D amplification
• Very high power density in 2U rack height
• Up to 20,000 Watts total power output, depending on load impedance
• High performance 96kHz DSP on all inputs and outputs (48kHz on outputs when implementing FIR filters)
• Switch mode power supply
• Global mains operation, 85V to 240V auto-sensing
• Intuitive, user-friendly, front panel interface
• Analogue, AES3 and Dante™ digital audio network inputs
• Ethernet network for system operation, control and monitoring via Martin Audio VU-NET™ software
• Comprehensive protection and monitoring functions

Technical Specifications

TYPE
Four-channel Class D amplifier
POWER OUTPUT

5000W into 2Ω
3000W into 4Ω
1500W into 8Ω
10000W bridged per channel pair, 4Ω
CV LINE OUTPUT
1250W, 25V line
3500W, 70V line
5000W, 100V line
DIGITAL SIGNAL PROCESSING
96kHz/48kHz DSP on all inputs and outputs
COOLING
Dual vari-speed fans, front-to-back airflow
MAXIMUM AMBIENT TEMPERATURE
40°C (104°F)
ANALOGUE IN/LINK (4 CHANNELS)
4 x female
4 x male Neutrik™ XLR
ANALOGUE INPUT IMPEDANCE
20kΩ balanced to ground
MAXIMUM ANALOGUE INPUT LEVEL
+20dBu
AES3 IN/LINK (2 CHANNELS)
1 x female, 1 x male Neutrik™ XLR, balanced
DANTE™ (4 CHANNELS)
2 x shielded RJ45, primary and secondary
AMPLIFIER OUTPUTS
4 x Neutrik Speakon™ NL4
DYNAMIC RANGE
>113dBA, analogue input
>114dBA AES/Dante™ input
FREQUENCY RESPONSE
7Hz-30kHz (‐2.5dB points, 4Ω load)
TOTAL HARMONIC DISTORTION
<0.05% typical @ 1kHz, 4Ω load
SLEW RATE
>60V per microsecond
DAMPING FACTOR
>800 at amplifier output, ref 8Ω
PROTOCOL
Ethernet
CONTROL APPLICATION
Martin Audio VU-NET™
SAMPLE RATE
96kHz (48kHz for FIR filter implementation)
PHYSICAL INPUTS
4 x analogue
2 x AES
4 x Dante™ inputs routable to four DSP drive modules
DRIVE MODULE INPUT DSP
Input signal routing, delay, gain, HPF, Phase, Mute
EQ: 2 x low shelf, 6 x PEQ/bandpass and FIR shelving filters
DRIVE MODULE OUTPUT DSP
Source, delay, gain, Phase, Mute, crossover filters, limiters
EQ: low shelf, 8 x PEQ / band pass and shelving filters
POWER SUPPLY
High performance Series Resonant
AC INPUT OPERATING RANGE
85 - 240V ~ AC, 47 - 63Hz
MAINS INRUSH CURRENT
6A at 115V, 12A at 230V (max for <10ms)
MAINS CONNECTOR
Neutrik 32A Powercon™
DIMENSIONS
(W) 482 x (H) 2U/88mm x (D) 441mm
(W) 18.98in x (H) 2U/3.46in x (D) 17.35in
(incl handles and optional rear support)
WEIGHT
12.5kg (27.5lbs)