AUDAC PRE220, Руководство пользователя

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Rear panel description
AC Power inlet with fuse:
The mains power supply (100-240V AC - 50/60 Hz) has to be applied to this AC power
inlet. The connection is made by an IEC C14 power connector and is fitted with a fuse. When
replacing the fuse, make sure that the value of the replacement fuse matches the value of
the original fuse. (T500mAL/250V)
Balanced stereo line output:
The balanced stereo line outputs are implemented using two 3-pin terminal block output
connectors. The audio signal available on these connectors allows it to be fed to any amplifier.
A mode switch allows to convert the output between stereo and mono. In mono mode, a
summed mono signal will be available on both left & right outputs, allowing the signal be
fed to mono systems such as 100V PA systems.
Priority mute contact:
A priority mute contact is provided with each output, allowing to completely mute the music
at presence of a contact closure between both terminals. This contact is convenient for
situations where a separate emergency system is installed and complete background music
muting is required at occasion of a (fire) alarm. The emergency system contact outputs can
be connected to this contact input.
Bluetooth antenna connection:
The included Bluetooth antenna should be connected to this terminal for good signal reception.
It is connected using an SMA type connector and allows antenna extension (with an optional
extension cable) for mounting outside of closed rack cabinets.
Unbalanced stereo line inputs:
Unbalanced line level input sources (e.g. media-players, radio tuners, ...) can be connected
to line inputs channel 1 and channel 2. These standard line inputs are implemented using
RCA connectors and fitted with a gain control potentiometer whereby the input sensitivity
can be controlled within a range of +4 dB ~ -20 dB.
Balanced microphone inputs:
Balanced mono sources (e.g. microphones) can be connected to inputs mic 1 to mic 8 which
are implemented using XLR connectors. They are fitted with a gain control potentiometer
whereby the sensitivity can be adjusted within a range of -6 dB ~ -50 dB.
These inputs are fitted with a three-band tone control, allowing signal equalization within
a range of ± 15 dB.