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EURORACK MX1804X
2.4.2 Additional stereo line inputs
There are two additional stereo line inputs (aux return
and FX return ) on your MX1804X. Aux return 1
operates in mono if only the left channel socket has a jack connected.
Level can be adjusted by the faders
and . The returns are permanently assigned to the main mix. The
aux return 2 (FX return) is usually reserved for the internal effects processor. But you can also use the
FX return input connectors to return signals from external devices. As a result you can also use FX return
as an additional stereo line input.
The aux returns have been cleverly designed to be multifunctional. They may be used for returning the outputs
of effects units. You can use them as tape returns from a multitrack recorder. They may also be used as extra
instrument inputs, especially if your MIDI keyboard or rack supplies a pre-mixed stereo signal.
Certain stereo effects produce a perceived imbalance between the left and right channel levels. To correct for
this you will have to bring your stereo effect back on a stereo channel, which has a balance control.
Via the switches and you can choose between the two different operating level settings -10 dBV and
+4 dBu.
2.4.3 Metering
Main mix/solo/PFL level is displayed on a pair of highly-accurate 12 segment bargraph peak meters . Four
additional LEDs indicate power on , +48 V phantom power present , and whether the mono pre-fader-
listen bus or the stereo solo bus is engaged.
2.4.4 Channel mode
The CHANNEL MODE switch determines whether Solo-In-Place or Pre-Fader-Listen is assigned to the
channel solo buttons.
Solo
Solo is the preferred method for auditioning an isolated signal, or group of signals. Whenever a solo button is
pressed, all unselected channels are muted in the monitors. Stereo panning is maintained. The solo bus is
derived from the output of the channel pans, aux sends and stereo line inputs. It is always post-fader.
PFL
Pressing once disengages the stereo solo bus, and replaces it with a separate mono PFL (Pre-Fader-
Listen) bus. Now any channel which is solo-ed, isn’t. It is PFL-ed instead. PFL should always be used for gain
setting (see also chapter 3 “PRACTICE”).
2.4.5 2-track input and output
Input
A 2-track input, on RCA connectors , provides easy connection to DAT recorders and other semi-professional
audio equipment.
The 2-track input is primarily for auditioning mix playback from tape. Switch 2 TK TO CONTROL ROOM
routes this signal to the monitors and/or phones.
However, it can also be routed to the main mix via button 2 TK TO MIX and will act as an additional input
for tape playback, MIDI instruments etc. Here switch should be disengaged, or you will be listening to the
2-track signal twice over!
With depressed you have another stereo line input available to the mix, useful e.g. for adding the output of
a second EURORACK or a BEHRINGER ULTRALINK PRO MX882 to your mix (see chapter 4.4 “Expanding”).
Output
The main mix output is delivered by XLR connectors and TRS connectors and on the front and
back panel as well as by RCA connectors on the front.
Level is ultimately determined by a pair of precision faders .
+ If you connect a compressor or a noise gate to the 2-track outputs smooth fades are no longer
possible.
2. OPERATION
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