DESIGN FEATURES
Physical Design
The amplifier is enclosed in a metal (steel) case of 88 mm (2U) height. The amplifier
is designed to be standard rack-mounted (RACK 19").
Power Supply Unit
Both channel of the amplifier share the same pulse power supply unit.
Power Factor Correction
(in DF2000 DSP only)
The amplifier has power supply with Power Factor Correction, which significantly
reduces load to the mains and also reduces noise and distortion in the mains. What is
more important, the amplifier output power is no longer rigorously dependent on the mains
voltage. The amplifier provides full power at the mains voltage from 160 V to 250 V (with
~
~
no need to use of external AC voltage stabilizer).
Cooling System
The amplifier features a forced cooling system which is common for both channels.
The amplifier and the power supply unit are cooled with a single fan blowing front to rear.
The cooling system provides for a double-step intensity-cooling rate switching. At a normal
temperature, the fan runs at a low speed, thus generating the least noise possible. When
the amplifier is set to deliver a high output power or when the ambient temperature is
higher than normal, the cooling system may switch the fan to the other (higher) cooling
rate.
Output Stage
The output stage of this digital power amplifier is designed according to Class
D
technology to deliver high efficiency and least heat. The high switching rate ensures the
high sound quality comparable with the best analogue amplifiers.
Balanced Inputs
The use of balanced inputs provides for an essential reduction of the environment-
induced hum and noise interference with long input connecting cables.
Line Outputs
The line outputs have a post-
DSP
signal. The signal parameters are determined by
the selected preset setting. You can change the signal parameters using the
USB
interface.
DSP
Built-in
DSP
accurately handles the audio signal due to its functions of equalization,
filtering, delay and limiter. Processor has 2 inputs and 4 outputs and provides free signal
routing from any input to any output.
DSP
enables users to choose between eight factory preset settings. Preset
parameters are listed on the insert in the
Owner’s Manual
.
Any of presets can be modified, using a computer connected via USB interface
(software –
SigmaStudio
by
Analog Devices, Inc.
).
The installation package of the
SigmaStudio
ver.3.10 software (32-bit and 64-bit
program versions available) and user manual can be downloaded from the site
parkaudio.ua (
Download
section on the pages of the corresponding amplifiers).
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