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3.1 Digital-Active Loudspeakersystem - whats' that?
3.2 Master-Slave Concept
3.0 Technical details
The Revox digital-active loudspeakersystems consist of three parts:
1. A loudspeaker box housing with specially built, high-quality loudspeaker
drive units.
2. A digital signal processor (DSP) by Motorola, embedded in an electronic unit,
for all digital signal processing. This DSP is responsible for fi ltering the signals,
distributing them to the individual frequency ranges, and thus to the individual
power amplifi ers. The input of the electronic unit accepts digital output signals
of various sources, such as a CD-Player, a DAT-Recorder or a MD-Recorder. The
unit automatically recognizes the sampling frequencies (32 kHz, 44.1 kHz, 48
kHz) of the different systems and adapts accordingly.
3. Three 130 watts power amplifi ers in each box for driving the loudspeaker
drive units. As the speakers come with built-in power amplifi ers, there is no
need for additional amplifi ers for operation nor for an annoying search for
the right loudspeaker cables.
Future trends will probably be characterized by an increasing importance of digital
signal sources, e.g. DAB, DVB. So, buying a digital-active loudspeakersystem
means getting ready for the digital age.
In order to protect the system from external interference, the digital electronic
unit has been designed as tight as possible. Additionally, this unit is extensively
shielded and mounted in only one loudspeaker. For this purpose, a highly
complex 4-layer board, which normally is exclusively found in high-performance
computers, is used.
While one loudspeaker houses the digital electronic unit for both channels
left and right as well as the power amplifi ers for one side (master), the other
speaker comes equipped with only the necessary power amplifi ers for its side
(slave). Such a concept guarantees a high degree of operational safety and
excellent results.
Digitale LS.indd 25.06.2001, 21:1919