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DA-2800 Operating Instructions V0.4
Introduction
Procella’s DA-2800 amplifier delivers professional quality audio amplification, in a highly efficient package that
delivers high power and long term reliability for any and all Procella Audio system installations.
Advanced Amplifier Technology
With advanced class-D technology, the DA-2800’s offers very high efficiency and delivers more power to the
loudspeakers with much reduced heat dissipation in comparison to conventional amplifiers. In addition, this
greater efficiency enables the dimensions, weight and power consumption of the amplifier 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 DA-2800's 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 the DA-2800 for the same playback volume level.
Superior Sound Quality
The crystal-clear high frequencies and extraordinarily tight, well-defined low end of the DA-2800 make it one of
the most accurate audio reproducers available. Its patented design features ensure optimal sound quality and
very high measured performance in parameters such as distortion, frequency response, slew rate, power
bandwidth and dumping factor.
Digital Technology
The DA-2800 design is based on mature 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. The DA-2800 amplifier uses very high sampling
frequencies to ensure a very high level of performance across the audio band.
High Reliability
The DA-2800 has highly robust protection against virtually any possible problem in operation and is designed to
work under virtually all conditions. It delivers maximum power with maximum safety and increased long-term
reliability.
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