into the jack (CONN3).
And carefully remove the front plate from the bottom
part of the housing. The PCBs for the individual
channels are attached to the front panel. To facilita-
et handling, the electrical connection between the
front panel and the bottom part of the housing can
be separated: Disconnect the 4-pole cable plugged
5) It is now possible to carefully remove the PCB.
Take care not to tear off any connection cable.
6) Perform the desired modifications for the channel
according to chapters 4.1 to 4.3.
7) Reassemble the mixer. Prior to fastening the
screws to join the front panel and the bottom part
of the housing, make sure to connect the two parts
again via the 4-pole cable.
4.1 Switching off the phantom power for individual
channels
(mono channels) or switching
it on
(stereo channels).
The 48V phantom power for the mono channels can be
centrally connected by the switch ‘PHANTOM POWER
+ 48V’, however, it can be individually disconnected for
each of these channels for connecting both unbalanced
and phantom-powered microphones. For this purpose,
rearrange the jumper ‘CONN3’ in the field ‘+ 48V’ on the
PCB of the corresponding channel in such a way that it
links pin 1 and pin 2 of the plug contact.
4) Remove all operating elements and also the nuts
below the operating elements at the channel to be
modified. Also unscrew the fader, if required.
3) Unscrew the plate of the connection panel and
remove it.
Unscrew the screws at the edges of the front
panel and the screws arranged around the connec-
tion panel on the rear panel.
2) To remove the front panel
For the pre-fader send way ‘MON’, the signal take-off
point for each channel can be separately modified to
pre-equilizer or post-fader. For this purpose, rearrange
the jumper ‘JP2’ (close to the field ‘A2’) on the PCB the
corresponding channel according.
CON 3
CON 4
CON 3
2
2
2
3
3
3
ON
ON
OFF
Jumper ‘CONN3’ for phantom power of a mono
channel.
Jumper ‘JP1’ for the send way ‘AUX’
In the basic adjustment, the microphone inputs of the
stereo channels are not supplied with the 48V phantom
power if the switch ‘PHANTOM POWER + 48V’ has
been pressed. To switch it on for a channel, bridge the
pins 2 and 3 of the contact ‘CONN4’ in the field ‘+48V’.
Plug contact ‘CONN4’ for phantom
power supply of a stereo channel
PRE FADER
POST FADER
POST FADER
PRE FADER
PRE EQ
PRE EQ
POST FADER
JP2
JP3
Jumper ‘JP2’ for the send way ‘MON’
4.3 Modifying the signal take-off points for the direct
outputs.
For each individual direct output of the mono channels,
the signal take-off point can be modified from post-fader
(basic adjustment) to pre-equalizer. For this purpose,
rearrange the jumper ‘JP3’ (close to the field ‘DO’) on
the PCB of the corresponding channel accordingly.
4.2 Modifying the signal take-off points for the
send ways ‘AUX’ and ‘MON’.
For the post-fader send way ‘AUX’, the signal take-off
point for each channel can be separately modified to
pre-fader. For this purpose, rearrange the jumper ‘JP1’
(close to the field ‘A1’) on the PCB of the corresponding
channel accordingly.
Jumper ‘JP3’ for the direct output.
Note: The phantom power can be switched off internally
for individual mono channels or switched on for
individual stereo channels. See chapter 4.1.
Do not switch on the phantom power if unbalanced
microphones are connected! These microphones
might be damaged.
will result.
Only switch on or off the phantom power with the
mixer switched off, otherwise loud switching noise
Caution!
up.
For operating capacitor or electret microphones
using a 48V phantom power, the phantom power can be
switched on for all microphone inputs of the mono chan-
nels: Press the recessed switch ‘PHANTOM POWER
+48V’ by means of a thin object (e.g. ball point pen). All
microphone inputs of the mono channels will be suppli-
ed with a 48V phantom power and the yellow LED
‘‘PHANTOM POWER +48V’ on the front panel will light
Connect microphones or other low-impedance mono
signal sources with low output levels to the balanced
XLR jacks ‘MIC’.
5.1.1 Microphones
The input channels mono allow both connection of mic-
rophones and of units with line output level. As it is imp-
ossible to switch between microphone inputs and line
inputs, do not use both inputs simultaneously. Either
connect the microphone input or the line input of the
channel.
5.1 Audio sources
Prior to connecting any units or to changing any existing
connections, switch off the mixer and all other audio
units.
5 Connection of Units
4
