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Introduction
Matica 500/900 Reference Manual 3
CHAPTER 1
INTRODUCTION
AC
BRKR
POWER
CHANNEL A
CLIP
CHANNEL B
CLIP
0
1
2
3
4
6
7
8
9
100
5
0
1
2
3
4
6
7
8
9
100
5
Figure 1: Amplifier front panel controls.
About Alesis Maticaª Amplifiers
Thank you for purchasing an Alesis Matica power amplifier, one of the most
advanced and highest value amplifiers available.
Your Alesis High Speed, Wide Bandwidth amplifier provides extremely accurate
sonic quality as well as measured specifications, but its conservative design and
careful attention to electronic protection means that it will continue to operate at
top condition without special attention, year after year.
Matica amplifiers use the newest generation of linear semiconductor devices for
improved performance. Their high slew rate of 80 V/ms insures that they will not
generate significant TIM (transient intermodulation) distortion. The outstanding
signal to noise ratio (typically better than 103 dB, A weighted, below rated output)
and very low harmonic distortion (typically below .009% midband) make them
ideally suited for the most critical studio monitoring applications.
These amplifiers, however, are in rugged, roadworthy packages which are of
minimum size consistent with conservative electronic design principles. Their
power transformers have unusually high current capability for their size, thus
insuring both stable power output and minimum interference with adjacent
equipment.
The CoolSyncª (patent pending) transistor cooling dynamically adjusts the rate of
front to back airflow depending on the power density of the program material, thus
anticipating the need for cooling rather than merely reacting to temperature. The
airflow cools all components, not merely the output transistors.
Detented level controls are on the front panel, where they can be easily adjusted if
necessary. Both the power switch and the circuit breaker are on the front panel so
that in case of problems, the breaker can be reset without requiring access to the
rear of the amplifier. Clip lights for each channel indicate the onset of actual