It is also important to ensure that the
Maximum Input Level as described in
is set to the
correct value for the source device.
Using too high a setting will result in an
elevated noise floor.
See
on Input
Impedance
13.9
USB Audio not working
The USB Audio input will only accept
PCM signals up to 192 kHz.
If your source is outputting DoP (also
known as DSD over PCM) or PCM
signals at higher sampling rates (e.g.
DXD at 384 kHz) there will be no audio
output from the loudspeaker.
13.10
S/PDIF input not
working
The S/PDIF input will only accept PCM
signals up to 192 kHz.
If your source is outputting DoP (also
known as DSD over PCM) or PCM
signals at higher sampling rates (e.g.
DXD at 384 kHz) there will be no audio
output from the loudspeaker.
If the volume control of the S/PDIF
input using Power Link has been
enabled, then it is important to set the
priority of the S/PDIF input higher than
that of the Power Link. If this is not
done, then the Power Link signal will
override the S/PDIF input and the latter
will not be heard.
13.11
Optical input not
working
Note that the Optical input will not
accept sampling rates above 96 kHz
due to unreliability of an optical digital
audio connection at higher sampling
rates.
If the volume control of the Optical
input using Power Link has been
enabled, then it is important to set the
priority of the Optical input higher than
that of the Power Link. If this is not
done, then the Power Link signal will
override the Optical input and the
latter will not be heard.
13.12
Automatic switching of
inputs not behaving as
expected
If you are using the Automatic input
selection, there may be cases where
the loudspeaker does not behave as
you would intuitively expect due to the
Time out parameter of the currently
selected source. This is best explained
by giving examples.
Take the case where you are playing
audio from two sources, a CD player
connected to the S/PDIF input and a
turntable connected to the XLR input
(via an RIAA preamplifier), and let us
assume that the S/PDIF input has a
higher selection priority than the XLR
input. In this case, the loudspeakers
will play the CD signal. If you then
press STOP on the CD player, the
loudspeakers will not switch to the
signal on the XLR input (the turntable)
until the S/PDIF input’s time out
duration has passed. (See Section
for a detailed description of the
Time-out parameter.)
This behaviour would also be true if
you were first playing a signal on the
CD player, you press STOP, and then
you start playing a signal on the
turntable. Again, until the S/PDIF
input’s time-out duration has passed,
the signal on the XLR input (from the
turntable) will not be automatically
selected by the BeoLab 90.
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