8.2 Control via MIDI software
1) Connect the jack MIDI INPUT (16) via a MIDI
cable to the MIDI output of the PC. The jack
MIDI OUTPUT (15) allows connection of
another MIDI-controlled unit.
2) For MIDI control, set the MFX-204 to the MIDI
channel used for controlling it:
a) Keep the button FX LOAD/
PAR
/
TAP
pressed for approx. 3 seconds until the
following text is displayed:
Config Communication
Device:
<
USB
>
If the MFX-204 has already been con-
trolled via MIDI, the last MIDI channel
adjusted will appear behind “Device”, e. g.
“Device:
<
MIDI Ch=12
>
” for control via
MIDI channel 12.
b) Select the MIDI channel (1 – 16) with the
control PAR VALUE (7). If the display indi-
cates “Device:
<
USB
>
”, turn the con-
trol counter-clockwise.
c) To exit the setting mode, keep the button
FX LOAD/
PAR
/
TAP pressed again for
approx. 3 seconds until the display indi-
cates an effect name.
3) After setting the MIDI channel, the effects will
be selected with a corresponding Program
Change command. Control Change com-
mands are used to activate and deactivate the
Bypass function and to change all effect
parameters. The tables below list the values
required.
Activating effects
with Program Change command
Table 1
Changing parameters or activating the
Bypass function with Control Change
commands
Table 2
To change a parameter, send two Control
Change commands to the MFX-204:
1) First select the parameter to be changed. For
this purpose, set MIDI controller 17 to the
value corresponding to the parameter num-
ber minus 1.
Example: For the effect REVERB HALL,
select the parameter PEQ1 Q (bandwidth of
bell filter 1): According to the table on page 3,
parameter PEQ1 Q is number 9. Therefore,
set MIDI controller 17 to the value 9 – 1 = 8.
2) To change the parameter, set MIDI controller
16 to a corresponding value. Tables 3 – 6 list
the values to be set:
1. All values for frequencies, gain or attenua-
tion, bandwidth and semitones are listed in
table 3. Example: If the desired bandwidth
of bell filter 1 (PEQ1 Q) is 1.5 octaves, set
MIDI controller 16 to the value 29.
2. Percentage values are implemented 1: 1,
see table 4. Example: To set the parame-
ter Decay to 65 %, set MIDI controller 16
to the value 65.
3. Parameters with a switching function are
listed in table 5; they are changed by the
value 0 or 1.
4. The values of all parameters with a time
unit can be found in table 6. Please note
that the step sizes will differ according to
the adjusting range.
Example: Setting the parameter Time of the
effect GATE REVERB to 100 ms: The next
possible value is 94.5 ms (3 × 31.5 ms). For
this purpose, set MIDI controller 16 to the
value 3.
Values for controller 16
Table 3
Frequency
Gain
Bandwidth
Semitones
Value
20 Hz
-15.0 dB
0.05 oct.
-12.00
0
25 Hz
-14.5 dB
0.10 oct.
-11.67
1
31.5 Hz
-14.0 dB
0.15 oct.
-11.33
2
40 Hz
-13.5 dB
0.20 oct.
-11.00
3
50 Hz
-13.0 dB
0.25 oct.
-10.67
4
63 Hz
-12.5 dB
0.30 oct.
-10.33
5
80 Hz
-12.0 dB
0.35 oct.
-10.00
6
100 Hz
-11.5 dB
0.40 oct.
-9.67
7
125 Hz
-11.0 dB
0.45 oct.
-9.33
8
160 Hz
-10.5 dB
0.50 oct.
-9.00
9
200 Hz
-10.0 dB
0.55 oct.
-8.67
10
250 Hz
-9.5 dB
0.60 oct.
-8.33
11
315 Hz
-9.0 dB
0.65 oct.
-8.00
12
400 Hz
-8.5 dB
0.70 oct.
-7.76
13
500 Hz
-8.0 dB
0.75 oct.
-7.33
14
630 Hz
-7.5 dB
0.80 oct.
-7.00
15
800 Hz
-7.0 dB
0.85 oct.
-6.67
16
1 kHz
-6.5 dB
0.90 oct.
-6.33
17
1.25 kHz
-6.0 dB
0.95 oct.
-6.00
18
1.6 kHz
-5.5 dB
1.00 oct.
-5.67
19
2 kHz
-5.0 dB
1.05 oct.
-5.33
20
2.5 kHz
-4.5 dB
1.10 oct.
-5.00
21
3.15 kHz
-4.0 dB
1.15 oct.
-4.67
22
4 kHz
-3.5 dB
1.20 oct.
-4.33
23
5 kHz
-3.0 dB
1.25 oct.
-4.00
24
6.3 kHz
-2.5 dB
1.30 oct.
-3.67
25
8 kHz
-2.0 dB
1.35 oct.
-3.33
26
10 kHz
-1.5 dB
1.40 oct.
-3.00
27
12.5 kHz
-1.0 dB
1.45 oct.
-2.67
28
16 kHz
-0.5 dB
1.50 oct.
-2.33
29
20 kHz
0 dB
1.55 oct.
-2.00
30
0.5 dB
1.60 oct.
-1.67
31
1.0 dB
1.65 oct.
-1.33
32
1.5 dB
1.70 oct.
-1.00
33
2.0 dB
1.75 oct.
-0.67
34
2.5 dB
1.80 oct.
-0.33
35
3.0 dB
1.85 oct.
0
36
3.5 dB
1.0 oct.
0.33
37
4.0 dB
1.95 oct.
0.67
38
4.5 dB
2.00 oct.
1.0
39
5.0 dB
2.05 oct.
1.33
40
5.5 dB
2.10 oct.
1.67
41
6.0 dB
2.15 oct.
2.00
42
6.5 dB
2.20 oct.
2.33
43
7.0 dB
2.25 oct.
2.67
44
7.5 dB
2.30 oct.
3.00
45
8.0 dB
2.35 oct.
3.33
46
8.5 dB
2.40 oct.
3.67
47
9.0 dB
2.45 oct.
4.00
48
9.5 dB
2.50 oct.
4.33
49
10.0 dB
2.55 oct.
4.67
50
10.5 dB
2.60 oct.
5.00
51
11.0 dB
2.65 oct.
5.33
52
11.5 dB
2.70 oct.
5.67
53
12.0 dB
2.75 oct.
6.00
54
12.5 dB
2.80 oct.
6.33
55
13.0 dB
2.85 oct.
6.67
56
13.5 dB
2.90 oct.
7.00
57
14.0 dB
2.50 oct.
7.33
58
14.5 dB
3.00 oct.
7.67
59
15.0 dB
8.00
60
8.33
61
8.67
62
9.00
63
9.33
64
9.67
65
10.00
66
10.33
67
10.67
68
11.00
69
11.33
70
11.67
71
12.00
72
Function
MIDI controller
Value
Select parameter
17
parameter number
(see page 3) minus 1
Change value
16
see tables 3 – 6
Bypass
80
0 = off
1 = on
Effect
Decimal value
Hexadecimal value
REVERB HALL
0
00H
REVERB ROOM
1
01H
REVERB PLATE
2
02H
REVERB VOCAL
3
03H
GATE REVERB
4
04H
VOCAL ECHO
5
05H
TAP DELAY
6
06H
CHORUS
7
07H
FLANGE
8
08H
PHASER
9
09H
TREMOLO
10
0AH
ROTARY
11
0BH
CHR / FLG REVEB
12
0CH
DELAY REVERB
13
0DH
CHR / FLG DELAY
14
0EH
PITCH SHIFTER
15
0FH
18
GB