Controller Value Charts – Axe-Fx II – Fractal Audio Systems

This page lists the percentage value to use for a Controller when you want a particular value when attaching a Modifier to a parameter. The most common parameter types are included here. For example, a value of 8 seconds in the Time parameter of the Reverb block would translate to a Controller value of 39.7%. This is most useful for Scene Controllers introduced in Firmware v12, but applies to all Controllers in the Axe-FX.

IMPORTANT – All values other than Source, Damping and Auto-Engage functions must be at Default settings for the following charts to be effective.

Modifier Default Settings

Default settings in the Modifier screen for the Drive parameter in the Drive Block. Note that Scene Controller 1 is selected and that the Min/Max values will be different depending on what specific parameter you have chosen.

Please watch my Scene Controller – Basics video to see the concept behind calculating these values.


For values that aren’t on this chart, use the following formula to calculate the Controller % value.

Range = Max – Min
(Desired  VALUE) – (Min) = X
X/Range = Controller %

Example: Reverb Time Parameter: Desired value of 5 seconds
Min = .10 Seconds, Max = 20 Seconds

20  – .10 = 19.90
5 – .10  = 4.9
4.9/19.90 = .246 = 24.6%

Note – This formula does not work for logarithmic and other non-linear parameters, such as Frequency, Q, Rate, and Trim, among others. It’s best to tune the Controller % value “by ear.” Synth Frequency has been manually calculated for your convenience.


Parameter Type:

Percentage – 0 – 100% 0 – 10 Value Decibels -80 – 20
Time – Reverb Block Time – Delay Block Time – Megatap & Multidelay Block
-100 to 100 Synth Frequency

 


Percentage

Range = 0 – 100%

Desired Value (%)  Controller % Value
0 0.0%
10 10.0%
20 20.0%
30 30.0%
40 40.0%
50 50.0%
60 60.0%
70 70.0%
80 80.0%
90 90.0%
100 100%

 

At default settings, Percentage style values correspond directly with the Controller % value. So a Desired 1% value is equal to a 1% value for the Controller.  5% = 5%, 21.5% = 21.5%, and so on.  Therefore, this chart is abbreviated.

 

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0 – 10 Value

Range = 0 – 10

Desired Value Controller % Value
0 0.0%
0.5 5.0%
1 10.0%
1.5 15.0%
2 20.0%
2.5 25.0%
3 30.0%
3.5 35.0%
4 40.0%
4.5 45.0%
5 50.0%
5.5 55.0%
6 60.0%
6.5 65.0%
7 70.0%
7.5 75.0%
8 80.0%
8.5 85.0%
9 90.0%
9.5 95.0%
10 100%

 

Similar to Percentage above, 0 – 10 values are based on a multiple of 10. Therefore, values can be determined easily by moving the decimal one place to the left (i.e. 3.5 Value => .35 = 35%); or you could (incorrectly) move the decimal one place to the right and add the % sign (i.e. 3.5 Value => 35%). This chart is therefore abbreviated.

 

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Decibels

Range -80 to 20 dB

Desired Value Controller % Value
-80 0.0%
-70 10.0%
-60 20.0%
-50 30.0%
-40 40.0%
-35 45.0%
-30 50.0%
-25 55.0%
-20 60.0%
-19 61.0%
-18 62.0%
-17 63.0%
-16 64.0%
-15 65.0%
-14 66.0%
-13 67.0%
-12 68.0%
-11 69.0%
-10 70.0%
-9 71.0%
-8 72.0%
-7 73.0%
-6 74.0%
-5 75.0%
-4 76.0%
-3 77.0%
-2 78.0%
-1 79.0%
0 80.0%
0.5 80.5%
1 81.0%
1.5 81.5%
2 82.0%
2.5 82.5%
3 83.0%
Desired Value Controller % Value
3.5 83.5%
4 84.0%
4.5 84.5%
5 85.0%
5.5 85.5%
6 86.0%
6.5 86.5%
7 87.0%
7.5 87.5%
8 88.0%
8.5 88.5%
9 89.0%
9.5 89.5%
10 90.0%
10.5 90.5%
11 91.0%
11.5 91.5%
12 92.0%
12.5 92.5%
13 93.0%
13.5 93.5%
14 94.0%
14.5 94.5%
15 95.0%
15.5 95.5%
16 96.0%
16.5 96.5%
17 97.0%
17.5 97.5%
18 98.0%
18.5 98.5%
19 99.0%
19.5 99.5%
20 100.0%

 

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Time – Reverb Block

Range .10 – 20 Seconds

Des. Value Ctrl % Value
0.1 0.0%
0.2 0.5%
0.3 1.0%
0.4 1.5%
0.5 2.0%
0.6 2.5%
0.7 3.0%
0.8 3.5%
0.9 4.0%
1.0 4.5%
1.1 5.0%
1.2 5.5%
1.3 6.0%
1.4 6.5%
1.5 7.0%
1.6 7.5%
1.7 8.0%
1.8 8.5%
1.9 9.0%
2.0 9.5%
2.1 10.1%
2.2 10.6%
2.3 11.1%
2.4 11.6%
2.5 12.1%
2.6 12.6%
2.7 13.1%
2.8 13.6%
2.9 14.1%
3.0 14.6%
3.1 15.1%
3.2 15.6%
3.3 16.1%
3.4 16.6%
3.5 17.1%
3.6 17.6%
3.7 18.1%
3.8 18.6%
3.9 19.1%
4.0 19.6%
4.1 20.1%
4.2 20.6%
4.3 21.1%
4.4 21.6%
4.5 22.1%
4.6 22.6%
4.7 23.1%
4.8 23.6%
4.9 24.1%
5.0 24.6%
Des. Value Ctrl % Value
5.1 25.1%
5.2 25.6%
5.3 26.1%
5.4 26.6%
5.5 27.1%
5.6 27.6%
5.7 28.1%
5.8 28.6%
5.9 29.1%
6.0 29.6%
6.1 30.2%
6.2 30.7%
6.3 31.2%
6.4 31.7%
6.5 32.2%
6.6 32.7%
6.7 33.2%
6.8 33.7%
6.9 34.2%
7.0 34.7%
7.1 35.2%
7.2 35.7%
7.3 36.2%
7.4 36.7%
7.5 37.2%
7.6 37.7%
7.7 38.2%
7.8 38.7%
7.9 39.2%
8.0 39.7%
8.1 40.2%
8.2 40.7%
8.3 41.2%
8.4 41.7%
8.5 42.2%
8.6 42.7%
8.7 43.2%
8.8 43.7%
8.9 44.2%
9.0 44.7%
9.1 45.2%
9.2 45.7%
9.3 46.2%
9.4 46.7%
9.5 47.2%
9.6 47.7%
9.7 48.2%
9.8 48.7%
9.9 49.2%
10.0 49.7%
Des. Value Ctrl % Value
10.1 50.3%
10.2 50.8%
10.3 51.3%
10.4 51.8%
10.5 52.3%
10.6 52.8%
10.7 53.3%
10.8 53.8%
10.9 54.3%
11.0 54.8%
11.1 55.3%
11.2 55.8%
11.3 56.3%
11.4 56.8%
11.5 57.3%
11.6 57.8%
11.7 58.3%
11.8 58.8%
11.9 59.3%
12.0 59.8%
12.1 60.3%
12.2 60.8%
12.3 61.3%
12.4 61.8%
12.5 62.3%
12.6 62.8%
12.7 63.3%
12.8 63.8%
12.9 64.3%
13.0 64.8%
13.1 65.3%
13.2 65.8%
13.3 66.3%
13.4 66.8%
13.5 67.3%
13.6 67.8%
13.7 68.3%
13.8 68.8%
13.9 69.3%
14.0 69.8%
14.1 70.4%
14.2 70.9%
14.3 71.4%
14.4 71.9%
14.5 72.4%
14.6 72.9%
14.7 73.4%
14.8 73.9%
14.9 74.4%
15.0 74.9%
Des. Value Ctrl % Value
15.1 75.4%
15.2 75.9%
15.3 76.4%
15.4 76.9%
15.5 77.4%
15.6 77.9%
15.7 78.4%
15.8 78.9%
15.9 79.4%
16.0 79.9%
16.1 80.4%
16.2 80.9%
16.3 81.4%
16.4 81.9%
16.5 82.4%
16.6 82.9%
16.7 83.4%
16.8 83.9%
16.9 84.4%
17.0 84.9%
17.1 85.4%
17.2 85.9%
17.3 86.4%
17.4 86.9%
17.5 87.4%
17.6 87.9%
17.7 88.4%
17.8 88.9%
17.9 89.4%
18.0 89.9%
18.1 90.5%
18.2 91.0%
18.3 91.5%
18.4 92.0%
18.5 92.5%
18.6 93.0%
18.7 93.5%
18.8 94.0%
18.9 94.5%
19.0 95.0%
19.1 95.5%
19.2 96.0%
19.3 96.5%
19.4 97.0%
19.5 97.5%
19.6 98.0%
19.7 98.5%
19.8 99.0%
19.9 99.5%
20.0 100.0%

 

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Time – Delay Block

Range 1- 8000 ms

 

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Time – Multitap & Multidelay Block

Range 1 – 2500 ms

Desired Value Controller % Value 
1 0.0%
10 0.4%
20 0.8%
30 1.2%
40 1.6%
50 2.0%
60 2.4%
70 2.8%
80 3.2%
90 3.6%
100 4.0%
150 6.0%
200 8.0%
250 10.0%
300 12.0%
350 14.0%
400 16.0%
450 18.0%
500 20.0%
550 22.0%
600 24.0%
650 26.0%
Desired Value Controller % Value 
700 28.0%
750 30.0%
800 32.0%
850 34.0%
900 36.0%
950 38.0%
1000 40.0%
1100 44.0%
1200 48.0%
1300 52.0%
1400 56.0%
1500 60.0%
1600 64.0%
1700 68.0%
1800 72.0%
1900 76.0%
2000 80.0%
2100 84.0%
2200 88.0%
2300 92.0%
2400 96.0%
2500 100.0%

 

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-100 to 100

Usually used for Balance and Pan parameters

Desired Value (%)  Controller % Value
-100 0.0%
-95 2.5%
-90 5.0%
-85 7.5%
-80 10.0%
-75 12.5%
-70 15.0%
-65 17.5%
-60 20.0%
-55 22.5%
-50 25.0%
-45 27.5%
-40 30.0%
-35 32.5%
-30 35.0%
-25 37.5%
-20 40.0%
-15 42.5%
-10 45.0%
-5 47.5%
0 50.0%
Desired Value (%)  Controller % Value
5 52.5%
10 55.0%
15 57.5%
20 60.0%
25 62.5%
30 65.0%
35 67.5%
40 70.0%
45 72.5%
50 75.0%
55 77.5%
60 80.0%
65 82.5%
70 85.0%
75 87.5%
80 90.0%
85 92.5%
90 95.0%
95 97.5%
100 100.0%

 

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Synth Frequency

Range 40 – 4000 Hz (C4 = Middle C; A4 = 440 Hz)

NOTE – These values were determined manually with the Axe-FX output going to a Boss TU-2 tuner, as the parameter is logarithmic and does not work with the formula at the top of the page

Pitch (at 440 Hz) Controller % Value 
E1 0.7%
F1 1.9%
F#1/Gb1 3.2%
G1 4.4%
G#1/Ab1 5.7%
A1 6.9%
A#1/Bb1 8.2%
B1 9.4%
C2 10.7%
C#2/Db2 11.9%
D2 13.2%
D#2/Eb2 14.5%
E2 15.7%
F2 17%
F#2/Gb2 18.2%
G2 19.5%
G#2/Ab2 20.7%
A2 22%
A#2/Bb2 23.2%
B2 24.5%
C3 25.7%
C#3/Db3 27%
D3 28.3%
D#3/Eb3 29.5%
E3 30.8%
F3 32%
F#3/Gb3 33.3%
G3 34.5%
G#3/Ab3 35.8%
A3 37%
A#3/Bb3 38.3%
B3 39.5%
C4 (Middle C) 40.8%
C#4/Db4 42.1%
D4 43.3%
D#4/Eb4 44.6%
E4 45.8%
F4 47.1%
F#4/Gb4 48.3%
G4 49.6%
Pitch (at 440 Hz) Controller % Value
G#4/Ab4 50.8%
A4 (440 Hz) 52.1%
A#4/Bb4 53.3%
B4 54.6%
C5 55.9%
C#5/Db5 57.1%
D5 58.4%
D#5/Eb5 59.6%
E5 60.9%
F5 62.1%
F#5/Gb5 63.4%
G5 64.6%
G#5/Ab5 65.9%
A5 67.1%
A#5/Bb5 68.4%
B5 69.6%
C6 70.9%
C#6/Db6 72.2%
D6 73.4%
D#6/Eb6 74.7%
E6 75.9%
F6 77.2%
F#6/Gb6 78.4%
G6 79.7%
G#6/Ab6 80.9%
A6 82.2%
A#6/Bb6 83.5%
B6 84.7%
C7 85.9%
C#7/Db7 87.2
D7 88.5%
D#7/Eb7 89.7%
E7 91%
F7 92.2%
F#7/Gb7 93.5%
G7 94.7%
G#7/Ab7 96%
A7 97.2%
A#7/Bb7 98.5%
B7 99.8%

 

Because the Controller % value’s minimum increment is only .1%, sometimes it was not possible to select a pitch-perfect note – it would be either a bit flat or a bit sharp. In these cases, the slightly sharp value was chosen.  You can subtract .1% to choose the slightly flat value if it works better for your application.

 

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