All material © 2010 Martin Audio Ltd. Subject to change without notice
5
Introduction
The totally new Martin Audio MA1.4 amplifier technology has changed the way the world looks at
professional audio amplification. No other amplifiers come close for applications demanding high power and
long term reliability. Thanks to amazing reductions in heat output along with reductions in weight and the
specific high output power, MA1.4 amplifiers can be used in an unlimited range of applications such as
concert touring, opera houses, theatres, churches, cinema, theme parks, television sound stages and
stadiums.
More sound and less weight
Compared to a conventional amplifier, Martin Audio MA1.4 technology offers very high efficiency and
delivers more power to the loudspeakers with greatly reduced heat dissipation. This greater efficiency
enables dimensions, weight and power consumption to be reduced. The output stages of the amplifiers
typically run at 95% efficiency, dissipating only 5% of the input energy as heat.
One of the most interesting characteristics is that MA1.4 efficiency is almost independent of output level.
Conventional amplifiers achieve their best efficiency only at full rated power output. Since standard music
has an average power density of 40% of the maximum level, conventional amplifiers can easily generate 10
times more heat than MA1.4 amplifiers for the same volume of sound.
Superior Sound-Sonic Accuracy
Crystal-clear highs and a tight, well-defined low end: the most accurate reproduction of an audio signal.
Patented design features ensure very high performance over parameters such as distortion, frequency
response, slew rate, power bandwidth and dumping factor.
Totally Digital with High Reliability
The MA1.4 series is based on PWM technology that has been used for 30 years or more in power supplies
and inverters. PWM provides high reliability, small size, low weight and high efficiency. A PWM converter
works as a high frequency sampler, converting the variable amplitude (audio) signal into an impulse
sequence with average value equal to the audio input.
MA1.4 amplifiers use very high sampling frequencies to obtain high performances across the audio band.
Compact & Lightweight
Martin Audio MA1.4 amplifiers offer incredibly compact dimensions are very lightweight making them
excellent for applications where space and weight saving are important. They also offer excellent ease of
use.
The Show Always Goes On
The MA1.4 is completely protected against every possible error in operation and are designed to work under
every condition. They will deliver maximum power with maximum safety and increased long-term reliability.
Anticipating potential problems at the design stage means your show always goes on!
