Controls And Connections - Montarbo MCR Serie Manual De Instrucciones

Controls and connections

MONO INPUT CHANNEL
1
GAIN: adjust the gain (sensitivity) of the input stage, allowing
➤
connections of signal sources (both line and mic level) having a wide
range of signal level. As a practical rule, the GAIN control must be set
to the maximum allowable level that will not activate the peak level
indicator (PK). This will maximize the signal to noise ratio.
2 Pushbutton that enables the 75 Hz, 12 dB/oct, high-pass filter.
➤
This filter decreases the low-frequency gain in those input channels
where there is no real low frequency content (e.g.: those used for voice
and for many instruments) and will result in a cleaner sound, reducing
the feedback from stage monitors and increasing the available dynamics.
3
HIGH / MID / LOW: 3-band Equalizer with parametric control of the
➤
mid range. The High and Low controls act on fixed frequency bands,
the Mid control allows to choose the frequency to be boosted or cut.
HIGH: adjusts the amount of boost or cut in the high frequency range
(±15dB@10kHz). Turning the control clockwise increases the gain at
high frequencies, counter-clockwise decreases it. The response is flat
at the center position.
MID kHz: chooses the center frequency of the mid-range band to be
boosted or cut (160 Hz ÷4.5 kHz).
MID dB: adjusts the amount of boost or cut (±15dB) at the frequency
set by the MID kHz control.
Note: If the MID dB control is set at '0' (centre) there will be no alteration
in the mid frequency band (independently of the MID kHz control setting).
LOW: adjusts the amount of boost or cut in the low frequency range
(±15dB@80Hz). Turning the control clockwise increases the amount of
low frequencies, counter-clockwise decreases it. The response is flat at
the center position.
4 AUX1 / AUX 2: auxiliary sends volumes. They set the level of that
➤
input channel in the AUX1 and AUX2 outputs.
The PRE / POST pushbutton routes these control before (PRE) or after
(POST) the channel's volume fader. The first setting (PRE) is usually used
for monitor sends, the other (POST) for external effect sends.
In both settings the signal is POST-EQ (that means the signal is always
affected by the channel's equalizers settings).
5 FX1 (AUX3) / FX2 (AUX4): volumes of auxiliary sends no. 3 and 4.
➤
These adjust the signal sent to the two internal stereo effects units
(FX1 and FX2) but, if the effects units are disabled, the signal is sent
to the AUX3 and AUX4 auxiliary outputs, to drive external effects or
additional monitors. The signal is always post-fade and post-eq (it is
affected by equalizer's and fader's settings).
6 PAN: this control allows to place the channel's input signal within
➤
the stereo image by assigning more or less of the channel's signal to
the left and right master outputs.
7 PFL: this pushbutton enables the channel's pre-fade listening.
➤
If the button is pressed, the channel's signal is sent to the headphones
amplifier (42) and the channel's level is shown by the master level
indicators (52), even if the channel is muted (MUTE pushbutton - 8 -
pressed) or the volume fader (9) is at it's minimum setting.
Listening and checking via the PFL allows to finely adjust the channel's
equalizer and gain settings without routing the channel to the master
outputs. The LED is on when PFL is enabled. It is possible to enable the
PFL on more than one channel at the same time.
8 MUTE: channel's main on/off switch with LED indicator.
➤
When pushed, the channel's signal is not sent to the L/R master
outputs, AUX1 and AUX2, FX1 and FX2 outputs. We suggest to mute
every unused channel, to reduce the noise in the outputs.
9 PK: peak LED indicator. It lights when the signal level is
➤
approaching the maximum (clipping) allowable level.
The signal is sampled in two points of the channel's signal path:
after the input amplifier (micro and line) and after the equalizer.
It is unaffected by channel's fader setting. If the LED is continuously
lighted, you must reduce the input GAIN (1) settingor modify the
equalizer settings, reducing the boost introduced by the tone controls.
This indicator is not affected by the setting of the channels volume
fader.
10 Channel VOLUME fader. It adjusts the channel's volume in the L/R
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master outputs and in all the auxiliary POST fade outputs.
connections:
●
11 MIC: balanced XLR microphone input (for microphones).
➤
It is fitted with 48V dc 'phantom' power for condenser microphones,
that is enabled by the PHANTOM switch (50) located in the master
section. Use this input only for balanced sources. Do not connect it to
unbalanced sources.
12 LINE: balanced jack line input (stereo jack), for instruments and
➤
high level sources. It may be connected to both balanced (stereo jack
plug) and unbalanced (mono jack plug) sources.
13 INS (INSERT): stereo jack for channel's insert in/out. When a stereo
➤
jack is plugged in, the channel's signal path is opened, and it is possible
to connect an external unit (an effect or an equalizer) in series with the
channel's signal path. The signal is affected by channel's GAIN setting,
but unaffected by chalnnel's equalizer and fader settings.
14 DIR OUT: channel's direct output (unbalanced jack), suitable to
➤
send the channel's signal to an external unit (typically a multi-track
recorder). The signal is post-eq and post-fader, that means it is affected
by the settings of channel's equalizer and volume.
It is possible, with a simple modification performed by an authorized
service center, to switch this output pre-fade (making it independent
from channel's volume).
Note: Do not connect instruments or other high level sources to the
MICRO inputs (this will result in distortion due to excessive signal level).
Do not connect microphones to the LINE inputs (the resulting signal will
be of low level and low quality).
13
ENGLISH