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Will Systems MAB-303 Manual
Thanks to the very kind Frank Ullrich I now have a the full manual including a chart with all the midi functions! If you have any questions about the manual you can mail me here.
Download the manual in PDF format (2.5MB).
Download the manual as 5 JPG files (2.2MB).
Menu functions
MIDI
| Display | Function | |
| C0 | C.6 | Sets the MIDI channel. C0 means responds to all channels (omni on). |
| A.0 | A.3 | A.0 = Single trigger, lower note. A.1 = Multi trigger, lower note. A.2 = Single trigger, higher note. A.3 = Multi trigger, higher note. |
| H.0 | H.6 | Sets the highest note. Highest real pitch is 72 (C). H.0 = 47 (B) H.1 = 52 (E) H.2 = 59 (B) H.3 = 64 (E) H.4 = 71 (B) H.5 = 76 (E) H.6 = 84 (C) |
| L.0 | L.2 | Slide On/Off Switch L.0 = Slide on/off L.1 = Slide on/off assigned to midi controller 64 (CC64) L.2 = Slide on/off assigned to midi controller 65 (CC65) |
| T.0 | T.1 | Test mode T.0 = Midi monitor T.1 = Self sequence play (not sure what purpose this serves) |
| u.1 | u.1 | Software version. The number indicates the version. I believe there's only one software version. |
Function
| Display | Function | |
| o0 | o2 |
Transpose. o0 = -1 octave o1 = normal o2 = +1 octave |
| L0 | L9 |
Slide. L0 = Slide off L1 - L9 = Slide intensity |
| b0 | b4 |
Pitch bend range. b0 = off b1 = 200 cent b2 = 400 cent b3 = 700 cent b4 = 1 octave |
| c0 | c4 |
Modulation wheel range. c0 = off c1 = 1/4 c2 = 1/2 c3 = 1 c4 = 2 |
| r0 | r8 |
Modulation range frequency. r0 - r8 = 1.87 Hz - 10 Hz |
| d0 | d9 |
Modulation wheel LFO depth. d0 - d9 = 0 - 100 cent |
| P0 | P4 |
Aftertouch destination. P0 = off P1 = bend up P2 = bend down P3 = modulation P4 = filter cut off |
| A0 | A3 |
Accent > Filter intensity. A0 = off A1 - A4 = low - high controlled thru velocity 0 - 127 |
| F0 | F3 |
Filter cut off frequency range. F0 = off F3 = low- high |
| G0 | G3 |
Accent > VCA intensity G0 = off G1 - G3 = low - high controlled thru velocity 0 - 127 |
What kind of power supply does the MAB-303 use?
My second hand MAB-303 came without a power supply. Will Systems doesn't exist anymore so if you need an adapter I doubt you'll be able to get an original one. On the back there is a 15v AC adapter input. This is a rather odd voltage, most univeral adapter you get in stores only support voltages up to 12v, so you have to visit a specialized store to get one. Or buy it somewhere online. I don't know how much amperes it needs but I do know that 1000mA is not enough. I tried a 15v 1000mA adapter but the synth didn't turn on. I bought a 15-24v 4000mA univeral adapter at www.conrad.nl and it worked fine. I would suggest you buy one with plenty of amperes (note: it doesn't matter if you buy an adapter with even higher amperes because an electrical device only draws what it needs).
NOTE: it seems there are two versions of the MAB-303. One that needs 12v 850mA and one that needs 15v 1000mA. If you're not sure what kind of voltage your MAB-303 needs try 12v first. If the sound is really dull and the resonance sounds very strange then your MAB needs 15v.
Is it possible to control the cutoff frequency of the MAB-303 by MIDI?
Yes! Well, sort of. The filter can be controlled by the aftertouch controller. Press the Function key, and set it to P4. This means you've assigned the aftertouch controller to the filter. Now you can record filter cut off changes with any external controller. Keep in mind though that you can't control the full range of the filter.