LINE-MASTER – THE REFERENCE THROUGH DIGITAL PRECISION
The Line-Master is an active 3.5 way studio monitor designed for up to high volumes.
The signal processing, such as equalization, cross-over and correction of the transient
behavior of the components, is taken care of completely at a digital level. The connection
to an existing, digital studio environment occurs digitally via the AES3 interface. An analogue
input is also possible. A high quality 27 Bit gain staging, Sigma-Delta converter with 64 bit
oversampling and a dynamic of more than 130dB is responsible for the conversion. The
digital signals are further processed utilizing a 60MHz floating point, Sharc-DSP in our
proprietary motherboards. This converts the 24-27Bit wide input data into a float word
with 32Bit Mantisse and 8Bit exponent that result in a theoretical dynamic of over 1500dB.
Overloading as well as scaling and rounding noises that maybe typical in similar equipment,
are excluded here. A patented process (Pat.Nr: 198 23 110) raises signals with a word
length of less than 24 Bit to an audiophile level. The external adjustable parameters ,
such as volume or filter etc., directly influence the process at the floating point level, so
that here, for example when adjusting the volume, no scaling malfunctions occur. On the
output side, the DSP works with two 24 Bit D/A converters connected to high performance
MOFSET output stages that have been equipped with hand selected transistors and work
with a bandwidth of 100kHz and a rise time of 80 V/us.
FEATURES OF DIGITAL SIGNAL PROCESSING
Digital signal processing must include the following:
-Separation of the signal’s components into treble, mid-range and bass.
-Equalization of the transmission behavior of the individual components.
- Protection against overloading
Every interference with the signal, like for example, a crossover filter or an equalization of
an individual speaker, not only makes the required change to the frequency characteristic
but also changes the impulse behavior of the system. With an analogue equalization, a
short impulse will automatically by smeared across the whole time axis and produce at
the end of the equalization a decaying oscillation of the impulse response. In addition, the
inertia of the membrane causes further oscillations of the membrane with every impulse.
All together this causes a right-angle at the signal input to be transformed into an unrelated
signal characteristic at the output. The Line-Master’s FIRTEC (Finite Impulse Response)
equalization in connection with DMC™ technology is free from such run-time distortions.
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