Ecler MAC90v - Manual (Page 7)

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4.3. Channel gain and equalization
These controls allow individual input sensitivity and tone adjustments for each
channel.
Thanks to the GAIN (2) control, you can precisely adjust the signal level of an
incoming musical signal to match the level of the music that is playing on air through another
channel. This operation may be performed visually (through the left VU-meter) and acoustically
(through the headphones), successively comparing both signals with the PFL buttons. The Gain
knobs offer an adjustment range of ±20dB.
The tone controls (3, 4, 5) of channels 1, 2, 3, 4, 5 and AUX have a range of -20 to
+10dB, while channels 6, 7 and 8 range from CUT to +10dB.
4.4. Using the CROSSFADER
The MAC90v provides a short travel sliding potentiometer placed horizontally. This
potentiometer is called CROSSFADER (38) and enables a direct mixing of the signals present at
any inputs (except auxiliary channel). This allows the DJ to prepare the mix and simply
crossfade back and forth between them.
Two pushbuttons on each channel let you assign that channel to either side of the
Crossfader. XFA (10) sends the signal to side A and XFB (11) to side B of the crossfader. Two
corresponding LED indicators help to identify which cannel is assigned to what side of the
Crossfader.
If none of these two switches is activated, the signal bypasses the crossfader circuit
and passes directly to the main mix bus and the corresponding MIX LED lights up. These
switches also serve when assigning the talkback activation channel(s) (see paragraph 4.8).
If, instead of using the crossfader, you would like to have two auxiliary mixing
channels at the XFA and XFB outputs, the cossfader potentiometer can be substituted with a
blind module Ref. BC01. This way, two more submixes can be made, apart from the main mix,
or two more auxiliary outputs can be available.
The MAC90v's CROSSFADER is based around an electronic VCA circuit that greatly
extends its life and additionally has the great advantage of being removable and replaceable by
yourself. To do so, just follow these instructions:
1- Remove the screws of the plate that hold the CROSSFADER.
2- Remove the set from the mixer.
3- Detach the multipin connector.
4- Replace the whole set or remove the screws that tie the potentiometer.
5- Tie the new potentiometer and the associated printed circuit and multipin
connector to the plate.
6- Attach the multipin connector.
7- Place the set on the mixer.
8- Fix the screws of the plate.