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Synthesis Technology MOTM-650 User Manual
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Synthesis Technology MOTM-650 User Manual

4 channel midi-cv converter
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MOTM-650 4 Channel
MIDI CV Converter
User's Guide
Firmware Version 1.4
Synthesis Technology
6625 Quail Ridge Dr.
Fort Worth, TX 76180
(817) 281-7776
www.synthtech.com
October, 2011

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Summary of Contents for Synthesis Technology MOTM-650

  • Page 1 MOTM-650 4 Channel MIDI CV Converter User’s Guide Firmware Version 1.4 Synthesis Technology 6625 Quail Ridge Dr. Fort Worth, TX 76180 (817) 281-7776 www.synthtech.com October, 2011...

  • Page 2: General Information

    TROUBLESHOOTING GUIDE If your MOTM-650 does not work as expected, keep in mind the MOTM-650 is a complex modal device, and more often than not, problems encountered are related to a higher level feature set to an unexpected value.

  • Page 3: Front Panel

    FRONT PANEL The MOTM-650’s front panel looks like this: SYNTHESIS TECHNOLOGY PAGE 3 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 4 – Indicates MIDI activity on input to the MOTM-650. This is an indicator of all MIDI data sent to the MOTM-650’s MIDI IN – not just MIDI data bound for the MOTM-650. Note that this LED is lit by the MOTM-650’s processor, not directly from MIDI data pin.

  • Page 5: User Interface Introduction

    USER INTERFACE INTRODUCTION Before getting in to the specifics of the MOTM-650’s feature set, let’s get comfortable using the MOTM-650’s user interface. Switch on the MOTM-650. The LCD will light up and indicate the MOTM-650 and its firmware version number, followed by a screen looking...
  • Page 6 MOTM-650 to store the change. Let’s try one more aspect of the MOTM-650’s user interface – With the display showing Clock MIDI Clk, press ENTER again. MIDI Clk will begin to flash. Use...

  • Page 7: Detailed Feature Description

    MOTM-650’s operation are visible at any given time. If one of the expected setting doesn’t appear, check the MOTM-650 Menu Chart in Appendix A to see if another setting controls whether or not it appears.
  • Page 8 If, on the other hand, you’re using your MOTM-650 to control four monophonic synth voices, it may make sense to have different settings for each voice. The Voice Group Type setting allows the following combinations of voice groups: 1 Voice Group with all 4 voices.
  • Page 9 VelScale _4 Volts The Velocity Scale setting sets the output scaling of the outputs when they are set to output velocity. It can be set to output 1, 2, 4, or 8 Volts when a velocity of 127 is received, and will be scaled between 0 volts and full scale in proportion to other velocity values.
  • Page 10 Robert’s description of each tuning). All but the first Tuning Table (standard Equal Temperament) can be overwritten by sending MIDI Tuning Standard messages to the MOTM-650. Once overwritten, they can only be restored by sending the 650 a tuning dump with the correct tuning data.
  • Page 11 When the ID is set to Global, the 650 will process all valid SysEx messages it receives. It will also transmit messages using the Global ID, which will be processed by any other 650s that receive them. SYNTHESIS TECHNOLOGY PAGE 11 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 12 650 will generate an internal clock at the last tempo received, so that a clock doesn’t have to be running to try out a new arpeggio. SYNTHESIS TECHNOLOGY PAGE 12 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 13 It sets the tempo of the internal clock to one of 128 tempos, ranging from 60 beats per minute (BPM) to 238 beats per minute. At the middle of the range, the resolution is .5 BPM; at the extremes it is 2 BPM. SYNTHESIS TECHNOLOGY PAGE 13 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 14 MIDI receive channel! They are completely independent from each other. To get a feel for how a voice group works, let’s hook up the MOTM-650 to some modules. For the sake of this example, we’ll assume you want to control a single VCO. Set the MOTM-650 as follows: •...
  • Page 15 Now, change VG1Alloc to Poly1. This will cause the MOTM-650 to allocate voices polyphonically. Since the MOTM-650 is set to 4 voices, it will allocate from a pool of all 4 voices. Even if voices 2 through 4 aren’t connected to anything, play some notes. Every note press will cause the next voice to be allocated, as you will see on the LEDs.
  • Page 16 The MOTM-650 has 9 voice allocation modes that are assignable on a per group basis. Each voice allocation mode has a specific use, and is described below. For the sake of...
  • Page 17 Voice Group Type is 2/2, then there are 2 voices available, so the first note will play with 2 voices, the second note with one, and subsequent notes will be ignored, just as they are with Poly 1 and Poly 2. SYNTHESIS TECHNOLOGY PAGE 17 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 18 VG1Glide _Off The Glide Type setting selects between one of the MOTM-650’s two modes of Glide (or portamento as it’s referred to by almost everyone except Moog & MOTM!), or having no glide at all. Normally, when a voice is reallocated to a new note, the output changes voltages nearly instantaneously.
  • Page 19 Note On is received, at which point the output will go to 0VDC until a Note Off is received, when the output will return to 12VDC. This is how gates work on Moogs. When the S- SYNTHESIS TECHNOLOGY PAGE 19 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 20 The Pitch Bend option will output a CV that is proportional to the value of the Pitch Bend CC. The most significant 10 bits are used to scale the voltage set by the Auxiliary Scale setting, for 1024 possible voltage levels. SYNTHESIS TECHNOLOGY PAGE 20 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 21 The AUX output will default to 0 volts when Disabled is selected. VG1 Aux1 Scale=4V The Auxiliary Output Scale setting controls the full-scale output voltage of the outputs, with 1, 2, 4, or 8 Volts being the available options. SYNTHESIS TECHNOLOGY PAGE 21 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 22 Arpeggiator Settings The MOTM-650’s two arpeggiators share their Clock Source, as set in the Global settings, and can have independent settings for the following: Arpeggiator Assignment Note Mode Note Order Clock Divisor/Multiplier The arpeggiators are referred to as Arpeggiator 1 (abbreviated as A1 in the menus) and Arpeggiator 2 (A2).
  • Page 23 The Note Order setting determines which direction the arpeggiator scans through the notes. Forward The Forward option scans the notes in a forward direction. All the examples so far have featured Forward mode, so we will skip repeating them here. SYNTHESIS TECHNOLOGY PAGE 23 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 24 C B E A D F D A E B Rev/Fwd The Reverse/ Forward option works the opposite of Forward/Reverse mode, just as you’d expect. For example: C E D F A B will be arpeggiated in Normal mode as: SYNTHESIS TECHNOLOGY PAGE 24 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 25 The Multiply by 4 option arpeggiates 1/32 notes or 4 notes per clock, depending on the source. Div= The Divide by 4 option arpeggiates 1/2 notes or 1 note per 4 clocks, depending on the source. SYNTHESIS TECHNOLOGY PAGE 25 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 26 The Divide by 2 option arpeggiates 1/4 notes or 1 note per 2 clocks, depending on the source. Div= 1.5 The Divide by 1.5 option arpeggiates 1/4 triplets or 2 notes per 3 clocks, depending on the source. SYNTHESIS TECHNOLOGY PAGE 26 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 27 Save Complete Load Def Settings Selecting the Load Default Settings action will load the default option for every setting and then display: SYNTHESIS TECHNOLOGY PAGE 27 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 28 When done, it will display: Dump Complete Dump All Patches can be used with an external sequencer or patch librarian to back up the MOTM-650’s internal settings. Dump Tuning Selecting the Dump Tuning action will bring up the following submenu:...

  • Page 29: Appendix A - Menu Chart

    Other Music 7-limit Black Keys in C Dan Schmidt Pelog/Slendro Yamaha Just Intonation Major C Yamaha Just Intonation Minor C Harry Partch 11-Limit 43 Note Just Intonation Note Inversion Backlight Intensity Auto Normal Bright SYNTHESIS TECHNOLOGY PAGE 29 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 30 Poly 2 Poly 2 Steal Unison Unison Steal Pitch Bend Amount 0-24 (2) Glide Type Constant Time Constant rate Glide Time 1ms-30 seconds (1 second) Glide Rate 1-127 (5) Gate Type Normal S-Trigger SYNTHESIS TECHNOLOGY PAGE 30 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 31 Voice Group 4 Settings … Arpeggiator 1 Settings Arpeggiator Assignment Voice Group 1 Voice Group 2 Voice Group 3 Voice Group 4 Arpeggio Mode Normal Ordered Ping Pong Random Note order Forward SYNTHESIS TECHNOLOGY PAGE 31 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 32 1.5X /1.5 Arpeggiator 2 Settings … Module Actions Load Patch Patch 1-32 (1) Save patch Patch 1-32 (1) Load Default Settings Dump All pPatches Dump Tuning Memory 1-16 (1 – 12 Tone) SYNTHESIS TECHNOLOGY PAGE 32 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...

  • Page 33: Appendix B - Tuning Table Descriptions (Compiled By Robert Rich)

    A rather vanilla 5-limit small interval JI, except for a single 7/5 tritone at D#, which offers some nice possibilities for rotating around bluesy sevenths. A=1/1 (440 Hz) 1/1 16/15 9/8 6/5 5/4 7/5 3/2 8/5 5/3 9/5 15/8 SYNTHESIS TECHNOLOGY PAGE 33 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...
  • Page 34 81/80 33/32 21/20 16/15 12/11 11/10 10/9 9/8 8/7 7/6 32/27 11/9 5/4 14/11 9/7 21/16 4/3 27/20 11/8 7/5 10/7 16/11 40/27 3/2 32/21 14/9 11/7 18/11 27/16 12/7 7/4 16/9 9/5 20/11 11/6 15/8 40/21 64/33 160/81 SYNTHESIS TECHNOLOGY PAGE 34 MOTM-650 USER’S GUIDE WWW.SYNTHTECH.COM...