ART48 - STEREO IN
PAN (1.)
Each mono input channel has a PAN knob. Although somewhat
unusual for a stereo input, it makes this particular unit more versatile.
The Stereo In effectively consists of two independent mono input
channels, each with their own controls - with the exception of the
LOW/HI Filter that affects both inputs simultaneously.
The two PAN pots therefore play an important role: When set hard left
and right respectively, the Stereo In unit gives you a stereo input - as
its name suggests. When the PAN pots are set to the centre, you get
a stereo input “switched to mono”. Setting one PAN pot slightly to the
left and the other to the right lets you chamfer the stereo image.
When plugging two independent sources into the Stereo In – such as
a guitar and a mono effect – you can then use the PAN pots to route
each source left and right as required.
INPUT SECTION
As a stereo channel strip, the unit has two input connectors (2.): Left
and Right. These are fully balanced, but use space-saving stereo
phone plugs. The tip connects as usual to the hot signal, the ring to
the cold and the sleeve to the ground. Another advantage of these
phone plugs is that you can connect an unbalanced music signal, for
example from a keyboard, via a simple guitar jack.
Although this stereo input unit is intended to accommodate nominal
line level signals, the input amp’s sensitivity can be adjusted from
-15 dBu to +24 dBu using the GAIN knobs(4.). Left and right input
channels can be separately adjusted. Furthermore, by depressing the
UNITY button(5.), the gain will be set to 1, allowing the signal to flow
- without amplification or attenuation - independently from the Gain
knob setting. This could be particularly useful in a recording situation
for example, where several “line level” devices might be connected to
multiple stereo line input units. Here, all inputs can be evenly set to
an accurate nominal level by depressing the UNITY buttons.
DIRECT OUT(2.)
The Direct Out connections work as a sleeve out or “dry line out post
input amp”. You can connect a simple mono phone jack or a stereo
phone jack to the plugs. The unbalanced line signal will be transmitted
through the “tip” of the phone jacks.
LOW and HIGH Filters(6.)
Line signals do not usually need strong shaping. However, a little
correction of the higher and lower frequencies can be useful. The
stereo LOW and HI filter knobs affect both the left and right inputs
simultaneously.
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