Lyngdorf Audio Room Perfect TDAI 2200 - Manual (Page 5)

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amplifier the resistor is placed just before the signal receiver - the value of the resistor
selected takes into account the resistance in the signal path itself, too. Thus the circuits are
kept low impedance, ensuring better noise immunity, while optimum impedance matching is
maintained in order to preserve the original signal shape ( i.e. overshoot is avoided).
Clock
One of the most important factors in digital signal processing is the ‘purity’ of the clock, in
other words, ensuring that the master clock that controls everything is extremely stable and
correctly placed (electrically as close as possible to where the clock frequency is needed).
In every one of our R&D tests we have concluded that keeping phase noise as low as possible
in the clock system is the single most important factor in minimising jitter. Typically jitter is
heard as high frequency distortion. That’s why we have always given the design of the clock a
very high priority – in fact this is one of Lyngdorf Audio core competencies!
Specialised low-noise design techniques have been employed in the TDAI-2200, reducing
digital interference in the product, and giving better working conditions for critical parts such
as the modulator (PCM -> PWM) and converters, which are especially sensitive to noise.
The TDAI-2200 handles all conventional sample rates (192kHz, 176.4kHz, 96kHz, 88.2kHz,
48kHz and 44.1kHz). To minimise jitter further, the sample rate of the input signal is
measured to determine the exact sample rate whereafter it is re-sampled to match the master
clock in the TDAI-2200 (although the input is stated at e.g. 96kHz it can easily ‘float’ slightly
both up and down).
The result of this meticulous design philosophy speaks for itself, as a pure, clean and natural
sound reproduction.
DSP
When we use the term ‘Digital Control Centre’ to describe the Lyngdorf TDAI-2200 we do so
because the TDAI-2200 is much more than ‘just’ a digital amplifier.
In fact the powerful DSP ‘engine’ inside it allows one to customize a speaker set-up completely
to one’s preferences.
The TDAI-2200’s built-in x-over filter allows you to both
control conventional passive speakers, substitute it the
normal x-over in a 2-way speaker or use it as the x-over
filter between main speakers and woofer(s) – e.g. in a
Lyngdorf Audio 2+2 set-up.
Also, multi-way systems can be controlled by using daisy-
chained TDAI-2200s.
For example one can use a single TDAI-2200 as the ‘master’
of the system to handle the high range (treble) and send
the low-pass filtered signal to a ‘slave’ TDAI-2200 which
then powers the midrange but then sends a further low-
pass filtered signal to a SDA 2175 that handles the bass
frequencies.
So you see, the TDAI-2200, when combined with other