The three new Martin Audio MA Series models — MA18K, MA12K and MA9.6K — are designed to use Pulse Width Modulation (PWM) technology to achieve higher efficiency. Martin says these amps can deliver 95% of the input power into the speakers, with a 5% loss dissipated as heat. They are reduced in size and weight and also contain patented design features to control parameters such as distortion, frequency response, slew rate, damping factor and bandwidth. The amps use switch-mode power supplies and power factor correction to maintain a steady current draw on the mains supply. The new MA models are designed for mains voltage variations and can be used directly on any worldwide mains voltage standard without adjustment to ensure that two-ohm loads may be driven without any compromise, making a reduced amplifier count a realistic proposition for many applications.
The new MA Series models also feature comprehensive DSP functionality accessed via the front panel controls and LCD display. Limiting, mains current draw, level and routing can all be controlled and the amplifier can be remotely controlled and monitored by a PC via an RS485 interface. An optional DSP card can be fitted to give massive additional DSP functionality thanks to on-board Sharc processing. A smart card can be used to store and load parameters between amplifiers.
For further information, please see www.martin-audio.com.
