Monitoring System; Channel Gain; Channel Equalization; Program Reverse Switch - Ecler HAK380 Bedienungsanleitung

4.2. Monitoring System

The HAK380 is equipped with a pre-listening system which allows monitoring of the FX (effects
return), PGM (program) and PFL (pre-fader monitoring) signals with the vu-meter and/or with the
headphones.
- SCRATCH CUE switch (36). When off, the signal selected with FX-PGM-PFL switch (35) can
be seen and heard. When on, this switch is inhibited and the left vu-meter shows the sum L+R from PFL
INPUT 1, while the right vu-meter shows the sum L+R from PFL INPUT 2 and with the headphones PFL
INPUT 1 and PFL INPUT 2 can be heard in stereo, depending on the positions of the balance control
(40) and the crossfader (49). This allows pre-listening the SCRATCH done with the crossfader.
- FX-PGM-PFL switch (35). Allows visual and audible monitoring of the effects return signal (FX),
the program signal (PGM) and the pre-fader signal (PFL). When FX or PGM is selected, both, visual
and audible monitoring, are in stereo. If PFL is selected, the operation of the monitoring system is the
same as for the SCRATCH CUE switch.

4.3. Channel gain

All the input ways of the HAK have accessible adjustments for the input sensitivity GAIN (23),
ADJ (10) and LEVEL (38), which makes possible the compensation of the difference between the levels
of the different sound sources connected to the mixer before mixing is done.
All input sensitivity adjustments must be done very carefully using the VU-METER and/or
headphones as a reference and avoiding that all the red LEDS of the VU-METER light up, otherwise
input could be clipped (Overload). MIC input gain control is located in back panel ADJ (10).

4.4. Channel equalization

The tone control system for the two main ways offers a wide operation margin: -30 to +10dB for
the bass and treble ways and -25 to +10dB for the mid way. This wide variation margin allows a
progressive application of the KILL effect in order to cancel completely all frequencies above the cutoff
frequency. The HAK380 also has a balance control for each input channel.
MICRO channel has two band (bass, treble) tone control.
ATTENTION: Use equalization carefully, by boosting too much the low frequency range, you can
induce an excessive displacement of the speakers membrane.

4.5. Program Reverse Switch

Program Reverse Switch activation (33) drives sound sources connected to INPUT 1 to INPUT 2
and vice versa but without changing GAIN adjustments.

4.6. ECLER Faders

The HAK380 uses a new generation of ECLER faders featuring an improved precision and very
smooth movement, a very fast cut-in-time, and extra long life performance tested up to 4.000.000
operations when combined to the ECLER VCA system (VCA=Voltage Controlled Amplifier).
Using VCA's allows the faders to have different gain and attenuation curves. The "curve
adjustment" controls on the HAK380 allow to adjust "fade in" and "fade out" curves for each way. It is
also possible to realize independent adjustments of their response curves using the potentiometer (56)
on the front part of the unit, making the curves hard or soft. Finally, each way has the REVERSE
function (55), which allows to invert the default direction of the faders. Depending on the chosen
direction it is possible to make "cuts" and "transforms" moving the faders in the same direction.
To replace the genuine ECLER Faders, please refer to Sec. 4.9
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