MARTIN AUDIO IK81
The iKON iK81 is an advanced 8-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 the Martin Audio Wavefront Precision WPM line array, the iK81 can also provide multi-channel amplification across the Martin Audio loudspeaker range.
| General | |
| TYPE | Eight-channel Class D amplifier |
| POWER OUTPUT (*) |
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| CV LINE OUTPUT (*) |
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| 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) |
| Audio Inputs/Outputs | |
| ANALOGUE IN/LINK (4 CHANNELS) |
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| 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 |
| Audio Performance | |
| DYNAMIC RANGE |
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| 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 |
| Control and Monitoring Network | |
| PROTOCOL | Ethernet |
| CONTROL APPLICATION | Martin Audio VU-NET™ |
| Digital Signal Processing | |
| SAMPLE RATE | 96kHz (48kHz for FIR filter implementation) |
| PHYSICAL INPUTS |
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| 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 | |
| TYPE | 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™ |
| Physical | |
| 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) |
Features
Eight channels of efficient Class D amplification
Very high power density in 2U rack height
10,000 Watts total power output
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 control and monitoring via Martin Audio VU-NET™ software application
Comprehensive protection and monitoring functions
Applications
Dedicated system amplifier for the Wavefront Precision Series
Versatile multi-channel amplification for Martin Audio loudspeaker systems
The iK81 can deliver a full 1250 watts per channel into 2, 4 or 8 ohms 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 iK81 to provide a multitude of features. 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 the WPM line array.
The iK81 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.
