B4D
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Example 3: System with Böhm Keyboard, MIDI Pedal and three B4Ds.
This example provides a full playable 2-manual organ! A keyboard (1- or 2-
manual waterfal keyboard!) from Böhm music international is connected via
the LINK IN on the first of the three B4Ds. The B4D is responsible for
receiving the drawbar positions and transmits the data of the upper manual
on MIDI channel 1 and the lower manual on channel 2. The chain is
continued with two more B4Ds (one for controlling the lower manual, the
other one controlling the pedals). There is a MIDI pedal connected to the last
B4D of the chain. The order within the chain does not matter. The MIDI cable
for controlling the LED display of the B4D at preset change of the B4 from
the PC must be connected to the first B4D, so that the following B4Ds gets
this information as well. For this system two B4D power supplies are
neccessary. These charge all three B4Ds and the manuals.
If you setup your own configuration, note the following:
• All data which is sent to the B4D across MIDI IN or LINK IN are out-
put unmodified via MIDI OUT and
LINK OUT.
• Controlling the LED of the B4D by preset changes or operating the
B4 requires a connection from the PC to the B4D. If multiple B4Ds
are connected, the connection must return to the first controller in the
chain. Without feedback the display on the B4D is not updated or off.
Böhm-Keyboard
(1 or 2 Manual)
B4D
In Out In Out
INK MIDI
PC
In Out
MIDI
SB
B4D
In Out In Out
LINK MIDI
B4D
In Out In Out
INK MIDI
MIDI-Pedal
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