Amplifier Module - Martin Audio MLA User Manual

MLA System
USER GUIDE
MLA Compact's VanishingPoint FIR filters give us the freedom to physically separate the mid and HF horns, so they do not
compromise each other's dispersion pattern, yet achieve the spatial performance of a single device – giving us the best of both
worlds.

Amplifier module

The amplification and control module is an entirely self-contained section. This may be removed by unscrewing the rear panel
which also holds the weather cowl in place. Once unscrewed the module is quickly disconnected using the pair of Neutrik NL8
connectors which connect the amplifier outputs to the drive units. This means that field replacement of the module is quick and
easy in the unlikely event of a module failure.
Each MLA Compact is fitted with a 5-channel amplifier module. Its Class D circuitry delivers a total of 2.1kW continuous and
4.2kW peak output, whilst producing significantly less heat than a linear output stage design. All channels share the same circuit
topology and are driven from the same power supply. This configuration effectively shares the total power available between
the LF, mid and high frequency channels - providing high continuous power for the low frequency channel and high peak power
for the mid and HF channels.
The lightweight, switched-mode power supply auto-ranges to global mains voltages from 100 to 240V 50/60Hz. Power Factor
Correction smooth's out the mains current draw over the whole of the AC waveform, effectively reducing cable losses caused by
high peak currents in the mains distribution system.
MLA System User Guide V2.1
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