User`s manual
Controlling the 444 via the front panel
Selecting Amplifiers and Cabinets / Switching rules & protection
At this point you hooked up your amplifiers and cabinets to the 444. Let's start switching!
You should establish a certain operating process when operating the 444. Either in the operating way via the
front panel switches or when programming midi presets, a cabinet has to be chosen by pressing the
corresponding front panel CABS switch. It is NOT possible to select an AMPS switch before.
Again, a CABS button can only be selected with a speaker cabinet hooked up to the corresponding SPEAKER
CABINETS jack. Thereby the 444 not only controls if a plug is connected to the SPEAKER CABINETS jack, but
also the attached load for its impedance. Hereby a low impedance is interpreted as a speaker cabinet, a high
impedance could be a non connected cable, a defective speaker cable or even a speaker in form of a
ruptured speaker coil etc. In that case the 444 would refuse the selection and state an n.c. in the display for
'no connection'. This way the 444 prevents your amplifier from damage because of running without a load.
The display will state an error status (Er).
Again the main facts
– Select CABS button first. Two cabinets can be selected. If two cabinets are selected, one of the
chosen has to be switched off first, before the 444 lets you select another.
– Select AMPS button next. One amp at a time can be selected, which means by selecting another
AMPS button the 444 disables the previously chosen amplifier.
–
FX Loops
The FX loop option allows to run one single effect unit to any of the FX loops of your connected amplifiers.
That way you are not any longer in need of several effect units for several amplifiers. Here it surely does not
matter if you run single or a chain of effect units for instance connected to a further audio looper unit.
FX LOOP ON/OFF button can not be selected without a cabinet and an amplifier selected. When engaged,
the FXLOOP ON/OFF switch will light up to show its active status.
The FX IN / FX OUT jacks are now connected to the FX Loop Send/Return of the selected amplifier.
When switching between amplifiers, the 444 switches the FX IN / FX OUT jacks to the selected amp's FX
Loop at the same time.
Controling via MIDI
Checking and setting the MIDI Channel
By pressing the MIDI CHANNEL button (5), the display (7) will show the currently active midi channel. This is
indicated by an additional decimal point at the lower right corner of the display for only a few seconds
before the display switches back to the midi program number.
To set the MIDI channel, consecutively press MIDI CHANNEL for a short period of time. The displayed
number counts up to '16', and starts again at '0'. Stop pressing MIDI CHANNEL if the desired MIDI Channel
number is reached. '0' stands for 'all channels' or 'omni mode'.
As soon as the display switches back to the previous state, the MIDI channel is saved to the non-volatile
memory of the 444.
User's Manual 444