Tubbutec Juno-66 User manual

Tubbutec JUNO-66
Midi retrofit and feature extension for Roland Juno-6 and
Juno-60
User Manual for firmware version v1.1
http://tubbutec.de
1

Contents
1 Juno-66 5
1.1 Versions ............................. 5
2 Juno-66 switches and buttons 6
3 Play Modes 7
3.1 Play Modes Overview . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Poly ............................... 7
3.3 Duo ............................... 8
3.4 Threevoice ........................... 8
3.5 MonoAandB ......................... 8
3.5.1 Auto portamento in Mono B . . . . . . . . . . . . . . 9
3.6 Chord .............................. 9
3.6.1 SaveaChord ...................... 9
3.7 Polychord ............................ 9
3.7.1 Recording a new Chord . . . . . . . . . . . . . . . . 9
3.8 Changing the play mode when arp is on . . . . . . . . . . . 10
3.9 New- and Old-school chord memory modes . . . . . . . . . . 10
4 Portamento 10
4.1 Select portamento speeds . . . . . . . . . . . . . . . . . . . . 10
4.2 Portamento and play modes . . . . . . . . . . . . . . . . . . 11
4.3 Constant Time and Constant Speed . . . . . . . . . . . . . . 11
5 Powerarp 12
5.1 Powerarp overview . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Creating a new sequence . . . . . . . . . . . . . . . . . . . . 12
5.3 playing and transposing . . . . . . . . . . . . . . . . . . . . 12
5.4 ModeandRange ........................ 13
5.4.1 Mode........................... 13
5.4.2 Range .......................... 13
2

CONTENTS 3
5.5 Playing a previously saved sequence . . . . . . . . . . . . . . 13
6 Custom tuning, scales and detuning 14
7 Midi 14
7.1 Midiin.............................. 14
7.2 Midiout............................. 14
7.2.1 Midi out as played . . . . . . . . . . . . . . . . . . . 14
7.2.2 Midi out as sounds . . . . . . . . . . . . . . . . . . . 15
7.3 Arpeggiator and Sample and Hold Trigger . . . . . . . . . . 15
7.4 Filterovermidi ......................... 15
7.5 Programchange......................... 16
7.6 PitchBend ........................... 16
8 Additional filter ADSR 16
9 Triangular filter LFO 17
10 S/H filter LFO 17
11 Config menu 18
11.1 Enter and exit the config menu . . . . . . . . . . . . . . . . 18
11.2 Configure Midi Channels . . . . . . . . . . . . . . . . . . . . 18
11.3 Portamento settings . . . . . . . . . . . . . . . . . . . . . . . 18
11.4 Detuning, Scales and Fatness . . . . . . . . . . . . . . . . . 19
11.5 Configure arp trigger . . . . . . . . . . . . . . . . . . . . . . 19
11.6 Configure S/H trigger . . . . . . . . . . . . . . . . . . . . . . 19
11.7S/HLFOamount........................ 19
11.8 Duo and Three voice . . . . . . . . . . . . . . . . . . . . . . 19
11.9 New-school and Old-school chord memory modes . . . . . . 20
11.10Auto portamento . . . . . . . . . . . . . . . . . . . . . . . . 20
11.11Pitch bend calibration . . . . . . . . . . . . . . . . . . . . . 20
11.12Factoryreset .......................... 20
12 Tips and tricks 20
12.1 Transferring a melody to Powerarp . . . . . . . . . . . . . . 20
12.2 Use of Powerap transpose and Polychord . . . . . . . . . . . 21
12.3 Copy a Polychord . . . . . . . . . . . . . . . . . . . . . . . . 21
13 Appendix 22
13.1 Midi controller chart . . . . . . . . . . . . . . . . . . . . . . 22
13.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 23

4CONTENTS
13.2.1 Midi in not working . . . . . . . . . . . . . . . . . . . 23
13.2.2 Midi loop back problems . . . . . . . . . . . . . . . . 23
13.2.3 Midi filter control and S/H LFO not working . . . . . 23
13.3Thanks.............................. 23

5
1 Juno-66
The Juno-66 is a midi retrofit and feature extension for the Roland Juno-6
and Juno-60 synthesizers. It features various additional play modes, a freely
definable arpeggiator / sequencer, midi in and midi out,two chord memory
modes, two additional filter LFOs and plenty other features.
This manual only describes the features different from the Juno-6 / 60.
Great care has been taken to not alter the original behaviour of the synths
with an exception of the key transpose function.
1.1 Versions
New features in version 1.1:
•Three voice mode optionally replaces Duophonic mode
•Additional ADSR envelope for filter
•Optional auto portamento mode for ’Mono B’
•Adjustable divider for internal arp clock and external trigger
•Select between old- and new-school chord memory

62. JUNO-66 SWITCHES AND BUTTONS
2 Juno-66 switches and buttons
The Juno-66 functions are controlled by the following switches and buttons
on the left side of the synth’s panel:
KEY TRANSPOSE, HOLD, ARP ON/OFF, ARP MODE and ARP range.
The original function of the KEY TRANSPOSE button is replaced and it
now serves as a ’FUNCTION TRANSPOSE’ button, allowing the control
of many additional functions. When the arpeggiator is switched off, the arp
button and switches double as switches to set the play mode, portamento,
and control the Powerarp sequencer. A sticker showing the most important
additional features come with the kit.
KEY
TRANSPOSE HOLD
ON/OFF MODE RANGE RATE
ARPEGGIO
UP
DOWN
1
2
3
UP
&
DOWN
PORTA
Poly
Mono A
Chord
UP
U/D
D
Off
Fast
Slow
1
2
3
Duo
Mono B
Polychord
MODE
Record
Chord
Power-
arp
+
+ARP
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Figure 1: Juno-66 controls

7
3 Play Modes
3.1 Play Modes Overview
In addition to the 6 voice polyphonic mode five new play modes are intro-
duced with the Juno-66:
Two monophonic modes, a duophonic mode, chord memory and Polychord.
When the arpeggiator is turned off, use the MODE switch and the KEY
TRANSPOSE button to select the play mode. If the KEY TRANSPOSE
led is off you can select the left column of modes (Poly, Mono A and Chord),
by pressing the KEY TRANSPOSE button, the led turnes on and the sec-
ond column (Duo, Mono B and Polychord) is selected. When the arpeggia-
tor is turned on the play modes can still be selected, see below.
PORTA
Poly
Mono A
Chord
UP
U/D
D
Off
Fast
Slow
1
2
3
Duo
Mono B
Polychord
MODE
Record
Chord
Power-
arp
+
+ARP
tubbutec
Figure 2: Play mode selection overview
3.2 Poly
Poly mode is the normal 6 voice polyphonic mode also used in the original
synths. The voices are assigned in a rotary algorithm and voice stealing is
performed on the ’oldest’ voice.

83. PLAY MODES
3.3 Duo
The duophonic layers three oscillators per voice and detunes the voices to
create a thicker, denser sound similar to the ’supersaw’ or ’supersquare’
modes often found in synthesizers. The fatness can be controlled by midi
7 or in the config menu 11. By adjusting the fatness a wide range of sonds
from ’clean’ over ’fat’ to ’dirty’ and finally ’detuned’ can be achieved. Voice
stealing is performed so that only the second played voice is replaced, the
first stays until released.
Use the config menu to select between Duo and Three-voice modes.
3.4 Three voice
The three voice mode optionally replaces the Duo mode. Use the config
menu to select which of the two are used when setting the panel switch to
Duo.
Three voice mode layers two oscillators per voice and detunes the voices
to create a thicker, denser sound similar to the ’supersaw’ or ’supersquare’
modes often found in synthesizers. The fatness can be controlled by midi
7 or in the config menu 11. By adjusting the fatness a wide range of sonds
from ’clean’ over ’fat’ to ’dirty’ and finally ’detuned’ can be achieved.
3.5 Mono A and B
In the monophic modes all six Oscillators are layered and detuned with
respect to each other to achive a thicker, denser sound similar to the ’su-
persaw’ or ’supersquare’ modes often found in synthesizers. The fatness can
be controlled by midi 7 or in the config menu 11. By adjusting the fatness
a wide range of sonds from ’clean’ over ’fat’ to ’dirty’ and finally ’detuned’
can be achieved.
The monophonic mode assignes the notes in a ’last played’ fashion: Press a
key and it will be played. When releasing a key and keys are still pressed,
the last played note is played. The algorithm memorizes the last eight
played keys to create an intuitive feeling.
In Mono mode A the envelope is retriggered each time a note is played,
Mode B does not retrigger the envelope when playing legato.

3.6. CHORD 9
3.5.1 Auto portamento in Mono B
If auto portamento is activated in the config menu, in Mono B mode por-
tamento will only be active when playing legato. Otherwise there will be
no glide.
3.6 Chord
The chord memory mode allows you to memorize a chord consisting of up
to six notes and transpose it with the keyboard.
3.6.1 Save a Chord
To save a new chord first play it on the keyboard and either hold down the
keys, press the HOLD button or use a sustain pedal to hold it. You can
play the chord in any of the play modes including Polychord mode. Now
while the notes are still on hold down the KEY TRANSPOSE button until
it starts blinking. By pressing it again the chord is now saved and used in
chord mode.
3.7 Polychord
The Polychord functionality allows you to assign an individual chord to
each key of the keyboard and play these chords with a single key press.
Like any other play mode Polychord can be used in conjunction with the
Powerarp. Combining the two gives you a versatile chord sequencer!
3.7.1 Recording a new Chord
To save a new chord first play it on the keyboard and either hold down
the keys, press the HOLD button or use a sustain pedal to hold it. You
can play the chord in any of the play modes including Polychord mode.
Now while the notes are still on hold down the KEY TRANSPOSE button
until it starts blinking. You can now release the pressed keys. The blinking
indicates the synth is waiting for the location you want to save the chord
to. Press one of the keyboards keys, the chord will be saved at this location
and the blinking stops. The last saved chord is also used in chord memory
mode. The chords are saved even if you turn of the synthesizer.

10 4. PORTAMENTO
3.8 Changing the play mode when arp is on
It is possible to change the play mode even when the arpeggiator is turned
on. By pressing the KEY TRANSPOSE button, the play mode selected
with the mode switch is selected and used from here on until you press the
KEY TRANSPOSE button again or exit the arp.
3.9 New- and Old-school chord memory modes
Use the config menu to select between new and old school chord memory
and polychord modes. In old school mode when pressing a key the new
chord replaces the old one similar to a monophonic synthesizer with layered
oscillators. In new-school mode the new chord is added to the old one,
replacing voices when necessary.
4 Portamento
The Juno-66 features portamento for all play modes.
The portamento used in the Juno-66 is linear on the musical scale. This
means that when sliding from e.g. C to E, the time spent between C and
D is the same than between D and E.
4.1 Select portamento speeds
You can use the RANGE (PORTA) switch when the arpeggiator is turned
off to switch on portamento and select its speed. When the range switch is
set to 1, portamento is turned off. Setting it to 2 enables fast portamento,
3 slow portamento. The exact times for ’Slow’ and ’Fast’ can be set using
midi 7 or the config menu 11. You can use a midi controller to change the
portamento speed/time instantly.