Owner`s manual
CONTROLLERS 
As 
discussed 
before, 
a 
controller 
is 
a 
circuit 
that 
controls 
another 
circuit. 
A 
controller 
usually 
has 
only 
an 
output; 
the 
audio 
signal 
rarely 
"passes 
through" 
a 
controller. 
A 
controller 
may 
control 
a 
signal 
source, 
a 
modifier, 
or 
another 
controller. 
The 
output 
of 
a 
controller 
is 
generally 
sent to 
the 
control 
input 
of 
the 
circuit 
to 
be 
controlled. 
KEYBOARD 
The 
most 
important 
controller 
on 
The 
Source 
is 
the 
keyboard. 
The 
keyboard 
outputs 
two 
essential 
pieces 
of 
information: 
control 
voltage 
and 
trigger 
state. 
The 
keyboard 
control 
voltage 
is 
unique 
for 
each 
key, 
and 
is 
calibrated 
at 
1 
volt 
per 
octave, 
or 
1/12 
volt 
per 
key. 
If 
a 
given 
key 
generates 
1 
volt, 
the 
key 
one-half 
step 
higher 
will 
generate 
1 
+ 
1/12 
volts, 
and 
so 
on. 
The 
voltage-controlled 
circuits 
in 
The 
Source 
are 
calibrated 
to 
this 
system. 
The 
octave 
transpose 
switch 
labeled 
"+1" 
adds 
one 
volt 
to 
the 
keyboard 
voltage; 
the 
"zero" 
switch 
returns 
to 
nominal 
keyboard 
voltage. 
The 
keyboard 
voltage 
determines 
the 
frequency 
of 
the 
oscillators 
and 
controls 
the 
filter's 
cutoff 
frequency 
in 
varying 
amounts. 
Normally, 
changes 
in 
keyboard 
voltages 
are 
instantaneous, 
but 
a 
lag 
in 
change 
rates 
can 
be 
applied 
with 
the 
KB 
Glide 
control. 
Touch 
program 
VOLTAOE 
CONTROLLED 
FILTER 
| 
| 
KB 
TRACK 
32' 
I  I 
IV 
I 
FOOTAGE 
I 
SING 
I 
|MUL1 
TRIGGER 
MEMORY 
FOOTAGE 
WAVESHAPE 
I 
INTERVALI 
OSCILLATOR 
BANK 
FILTER 
CONTOUR 
LOUOIMEBB 
CONTOUR 
MODIFIERS 
REC1 
REC2 
STOP 
CONTINUE 
PLAY 
1 
PLAY 
2 
-
REC 
PLAY 
ARKGGIO 
S&H 
S&HFI 
EXTJTRIG 
SAVE 
VERIFY 
LOAD 
REC2 
STOP 
CONTINUE 
PLAY 
1 
PLAY 
2 
REC 
PLA 
AG  ^ 
J 
^^^ 
^^^ 
PROGRAMS 
35 










