User`s manual
11
EURORACK MX1604A
If no connection is made to Aux Return 2, the signal is normalled (connected directly) to Aux Return 1.
Depressing FX TO AUX 1 will then feed the signal from Aux Return 1 into the cue feed (Aux Send 1) and can
be controlled in level independently with Aux Return 2. This feature is primarily useful when you are using one
effect for the Main Mix and for the foldback speakers.
+ When using Aux Send 1 as a second (pre-fader) effects send and Aux Return 2 as the effect
input, do not engage FX TO AUX 1 . The connection from Aux Return 2 to Aux Send 1 could
cause feedback.
However, there are exceptions: For instance if you deliberately want to send one effect into another, e.g.
delay into chorus etc.
The Aux Returns are multi-functional. They may be used for returning the outputs of effect units. You can use
them as Tape Returns from a multitrack recorder. They may also be used as extra instrument inputs, espe-
cially 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.
When applying short left and right delays, the shortest one will always seem loudest. When pitch shifting up
and down in wide stereo to thicken a sound, the signal shifted upwards will seem louder than one that goes
down. In both cases use the Balance control
to compensate (an analogy comes from Greece: the col-
umns of the Parthenon in Athens are slightly bowed so as to appear straight.)
When carrying any stereo imaging exercise, dont just rely on the control room monitors. Get a pair of head-
phones and listen in stereo and in reverse stereo, just in case you have any significant hearing discrepancies
between your ears.
Sometimes an engineer wants to narrow the stereo width of a reverb field. To do this you will have to come back
on two mono channels to get independent pan for the left and right signals.
4.3 Metering
Main Mix/Solo/PFL level is displayed on a pair of highly-accurate 12-segment bargraph peak meters .
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.
4.4 Channel mode
The Channel Mode switch determines whether Solo-In-Place or Pre-Fader-Listen is assigned to the chan-
nel 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. All Solo signals are reconfigured to PFL. PFL should always be used for gain-setting (see also
the essential Section 5 SETTING UP).
The L/R meters follow whatever source is being auditioned (the meters wont make much sense if more
than one source is selected!). Selecting Solo/PFL does not affect the signal from the L/R recording outputs.
Just as well, or every time you wanted to do a quick Solo check during a mix, youd have to start again!
4.5 2-Track input and output
Input
A 2-Track input, on RCA phono jacks , provides easy connection to DAT and other professional or semi-
professional audio equipment.
The 2-Track input is primarily for auditioning mix playback from tape. 2 TK TO CONTROL ROOM routes
4. MAIN SECTION