What Are Drawbars And How To Use Them - Key B Organ Viscount Legend Expander Mode D'emploi

How to play Upper and Lower with two external keyboards and the Pedals section with
a MIDI pedalboard
1.
Connect the MIDI output of the keyboard that you wish to use as upper manual to the [IN1] or
[IN2/PEDALS] connector of the
2.
Connect the MIDI output of the keyboard that you wish to use as lower manual to the MIDI input connector
of the keyboard described in step 1 or to the MIDI pedalboard. Then connect use the Thru port of this
device to the [IN1] or [IN2/PEDALS] connector of the
1. Please keep in mind that the Viscount MIDI pedal board must always be connected to the [IN2/PEDALS]
connector.
3.
Press [VALUE +] or [VALUE -] until the display shows the message "Md2".
4.
Select the same MIDI channel for the Upper section on the
keyboard you wish to use as upper manual.
5.
Select the same MIDI channel for the Lower section on the
keyboard you wish to use as lower manual.
6.
Select the same MIDI channel for the Pedals section on the
pedalboard.
MIDI
Pedalboard
Pedals

4.2 WHAT ARE DRAWBARS AND HOW TO USE THEM

The electromechanic organ sound generation is based on 91 metal wheels with bumps (called tonewheels)
that revolve close to a magnet with a coil. The bumps of the wheels create a variation in the magnetic field,
thus generating a voltage and hence a signal which, controlled through the drawbars and amplified, becomes
sound.
Pipe organs generate sound by blowing compressed air inside a resonating tube, or pipe. Labial reeds
produce a pure sound (without harmonics), very similar to that of a flute, which is the type of sound generated
by an electromechanical organ with only one drawbar pulled out. The frequency of the sound generated by a
pipe is directly proportional to its length: the longer the pipe, the lower the frequency. The pipe producing the
root note is 8' long; shortening the length of one half, to 4', the note is an octave higher, while with a double
lenght of 16', the generated note is one octave lower.
Drawbars work the same way, and it is possible to note how the size, expressed in feet, decreases from left to
right, as in a graphic equalizer, where the frequency increases as one moves from left to right. The use of
drawbars can be compared to that of faders in a graphic equalizer: faders modify the timbre of the input
sound, just as drawbars in an electromechanical organ define the timbre by controlling the harmonics.
Drawbars on the left control the lowest harmonics, while those on the right control increasingly higher notes.
The only drawbar that does not follow this rule, as described below, is the second from the left
The level of the harmonic increases as the drawbar is pulled out, and the exact level is shown by the numbers
printed on the bars; the level is decreased by pushing the drawbar in.
Legend Exp
.
Legend Exp
Legend Exp
Pedals Lower
Pedals
channel
Lower
channel
Lower
EN - 11
that has not been used already in step
Legend Exp
(see par. 7.1) and on the external
Legend Exp
(see par. 7.1) and on the external
Legend Exp
(see par. 7.1) and on the external
Upper
Upper
channel
Upper
MIDI
Keyboard 2
User Manual
MIDI
Keyboard 1