Moog Slim Phatty User Manual
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Moog Slim Phatty User Manual

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Table of Contents

How to use this Manual .......................................
Setup and Connections ........................................
Overview and Features ........................................
Signal Flow ....................................................................
Basic Operation .........................................................
A. Oscillator Section ...............................................
B. Filter Section .........................................................
C. Envelope Generators Section ....................
D. Modulation Section ..........................................
E. Output Section ....................................................
F. Input/Output Panel ............................................
G. Interface Panel .....................................................
Preset Mode ................................................................
Master Mode ...............................................................
A. Menus ....................................................
B. Advanced Presets ...........................
C. System Exclusive .............................
D. System Utilities..................................
 
THE USER INTERFACE (con't)
5
Performance Sets ................................................................
6
How the SP handles MIDI .............................................
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A - LFO Sync Modes .....................................................
B - Arpeggiator Clock Source ..................................
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C - The Calibration Preset .........................................
D - Accessories .................................................................
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E - Tutorial .............................................................................
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F - MIDI Implementation Chart ..............................
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G - Service & Support Information ........................
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H - Caring for the Slim Phatty ...................................
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J - Specifications .................................................................
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GLOSSARY ......................................................................................
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SLIM PHATTY PRESET LIST ................................................
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Summary of Contents for Moog Slim Phatty

  • Page 1: Table Of Contents

    G – Service & Support Information ......D. Modulation Section .......... H – Caring for the Slim Phatty ........E. Output Section ............ I – Using the CP-251 with the Slim Phatty ..F. Input/Output Panel ..........J – Specifications ..............G. Interface Panel .............
  • Page 2 SAFETY INFORMATION *** Important Safety Instructions - Please Read *** WARNING - When using electric products, basic precautions should always be followed, including the following: 1) Read all the instructions before using the product. 2) Do not use this product near water – for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool or the like.

  • Page 3: Foreword From Steve Dunnington

    find it to be an inspiring instrument for years to come. Good things can come in small packages – and “the Slim” is no exception. Making the Slim Phatty has been a labor of love, transforming the electronic workings of the Little Phatty® into a package that is easily used as a desktop or a 3U rack-mount unit.

  • Page 4: The Basics

    This icon indicates technical information for the advanced user or the technically curious. Setup and Connections For those of you who can’t wait to play your new Slim Phatty, the following should get you set up and run- ning quickly.
  • Page 5 Use care when unpacking the Slim Phatty, and be sure to save the carton and all packing material in case you need to ship the Slim Phatty for any reason.

  • Page 6: Overview And Features

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 B asics Overview and Features The Slim Phatty (SP for short) is a monophonic analog synthesizer that is a descendant of the classic Minimoog Model D. The SP features 2 ultra-stable oscillators, a genuine Moog 24dB/Octave low pass filter, two 4-stage analog envelope generators and a flexible modulation matrix.
  • Page 7 2. Audio jacks – provides monophonic Audio Input and Output connections, as well as a Headphone output. The Audio Input jack allows external signals to be processed by the Slim Phatty. 3. Control Voltage jacks – provides Control Voltage/Expression Pedal inputs for Pitch, Filter, and Volume parameters, and a keyboard Gate input to trigger the envelope generators with a footswitch or gate signal.

  • Page 8: Signal Flow

    final level is set by the Master Volume control. For many users, MIDI will be the main source of control for the Slim Phatty. Each time the SP receives a MIDI ‘Note On’ command, the SP produces a Pitch CV and Gate signal in response. The Pitch CV signal is used to specify the pitch of the oscillators, while the Gate signal is used to simultaneously trigger the Filter and Volume Envelope Generators.

  • Page 9: Basic Operation

     

  

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 B asics Basic Operation The SP has two operating modes: Master and Preset. • Master mode allows you to access and change global parameters and other utility options. A complete list of the Master mode functions and parameters is shown on page 26.

  • Page 10: The Components

    Output Back Panel, and the User Interface section. A. The Oscillator Section The Oscillators are the main sound source of the Slim Phatty. The oscillators in the SP are analog Voltage Controlled Oscillators (VCOs) that feature a temperature regulation circuit that provides them with excel- lent tuning stability.
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 C omponents Waveform: Each oscillator has a switch labeled WAVE that allows the analog edit control to modify the waveform. The waveform is continuously variable from triangle, to sawtooth, to square, to rectangular.

  • Page 12: Filter Section

    An 18dB/Octave slope is steeper still, with a corresponding frequency rejection. Finally, a 24dB/Octave slope provides the steepest rejection of frequen- cies above the cutoff point. The classic Moog ‘ladder’ filter is a 24dB/Octave lowpass filter. The Moog filter also features a parameter called Resonance. This parameter adds a resonant peak at the cutoff frequency.
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 C omponents Finally, the Overload (O.L.) parameter allows you to set the amount of signal clipping from none to soft to hard clipping as the amount is increased.

  • Page 14: Envelope Generators Section

    Enve- lope Generators (EGs). The Slim Phatty has two identical EG circuits. When triggered, these circuits produce time-varying control voltages having a start, a middle and an end. The parameters that specify this progression are the Attack, Decay, Sustain and Release controls, abbreviated as ADSR.
  • Page 15 The KB GATE jack on the side panel is a trigger input that accepts a footswitch (momentary, normally closed like the Moog FS-1) or a gate signal. Pressing the footswitch or applying a gate signal (+5V) causes both envelopes (Volume and Filter) to trigger.

  • Page 16: Modulation Section

     

  

  

  

  

  

  

  

  

  

  

  

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  • Page 17: Output Section

    The jack accepts a positive control voltage from 0 to 5 Volts, or an expression pedal like the Moog EP-2. A voltage of 0 volts silences the SP, and a voltage of 5 volts corresponds to the output level set by the VOLUME control knob.

  • Page 18: Input/Output Panel

    Moogerfooger EP-2 (ring = +5.5 supply to the pedal, tip = variable CV return), or a control voltage from –5 to +5 Volts. The KB Gate Input accepts a footswitch (a momentary, normally-closed footswitch like the Moog FS-1) or a +5 Volt Gate Signal. MIDI Connectors (DIN and USB): These are DIN connections for MIDI In/Out/Thru, and MIDI USB connector.

  • Page 19: Interface Panel

    Pressing the MASTER switch places you in Master mode. In this mode, the VALUE knob is used to scroll through the Master mode menus for the Slim Phatty. For a list of the Master mode menus, see page 26. Preset: Pressing the PRESET switch places you in Preset mode.
  • Page 20 The ENTER/STORE button is used to enter changes and store edited presets in PRESET mode and to execute SysEx and System Utility functions in MASTER mode. Fine Tune: The FINE TUNE control is used to tune the Slim Phatty’s oscillators ±3 semitones for matching an external reference pitch. Glide On/Off: The GLIDE ON/OFF switch enables or disables the glissando effect between notes.

  • Page 21: The User Interface

     

 THE USER INTERFACE  

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 I nterface Preset Mode Preset mode is the default mode when the SP is powered on. Preset Mode is used to access presets and provide control for editing, naming and storing sounds.
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 NOTE:  

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 I nterface Tap Tempo Tap Tempo is an easy and intuitive way to adjust the speed of the LFO Rate or the Arpeggiator Clock. The Tap Tempo function is always available for any preset in PRESET Mode.

  • Page 24: Master Mode

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 Master Mode Master Mode is used to access the global settings and Advanced Preset settings for the Slim Phatty, and the routines for sending and receiving data.

  • Page 25: Menus

     

  

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 I nterface ADVANCED PRESET: Advanced Presets is a set of menus that allows you to access additional parameters for the selected preset.
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 CLOCKS/QUARTER TIME VALUE SP DISPLAY...
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 I nterface PROGRAM CHANGE SEND/RECEIVE: This menu item is used to enable or disable the transmission (SND) and reception (RCV) of MIDI program changes.

  • Page 28: Tuning Scale

     

  

  

  

  

  

  

  

  

  

  

  

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 I nterface PRECISION MODE: Precision Mode is a feature that allows precision editing of SP param- eters using the VALUE knob.
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 MIDI CHANNELS IN AND OUT: This menu is used to select the SP’s MIDI In and Out channels.
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 I nterface MIDI SETUP (con’t) The fourth page of the MIDI Setup menu allows you to select the MIDI output connection.
  • Page 32 MIDI IN on the SP. You should now be able to play duophonically, with the Little Phatty sounding the first note played on the keyboard and the Slim Phatty sounding the second note. If all available voices are in use, additional notes will not sound until enough keys are released to free a voice.
  • Page 33 Note Entry allows you to specify a note to be played when you press the ENTER button, allowing you to conveniently audition a Preset if you don’t have a MIDI controller connected to the Slim Phatty. In this menu, note values are specified as MIDI notes.. The range of valid MIDI note values is 4 to 99, and the default value is 52, which specifies the ‘E’...

  • Page 34: Advanced Presets

     

  

  

  

  

  

  

  

  

  

  

  

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 I nterface MOD SOURCE 5 (MOD SRC 5): This menu allows you to select one of two modulation options that will be used when the FILT ENV source is selected on the front panel (Modulation Source 5).
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 KEYBOARD PRIORITY (KB PRIOR): The Keyboard Priority menu allows you to select the keyboard prior- ity for individual presets.
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 I nterface POT MAPPING (con’t): Press the CURSOR button once more to select whether the assign- ment applies to internal only (INT), external only (EXT) or BOTH.
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 ARPEGGIATOR: The Arpeggiator provides a wide range of musical sequencing pos- sibilities.
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 I nterface ARPEGGIATOR (Con’t): The third page of the Arpeggiator menu allows you to specify the Arpeggiator Clock Divider.

  • Page 40: System Exclusive

     

  

  

  

  

  

  

  

  

  

  

  

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 ARPEGGIATOR (Con’t): The seventh page of the Arpeggiator menu allows you to enable or dis- able the Latch function.
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 I nterface C. SYSEX Menus (Con’t) SEND ALL PRESETS: This option allows you to send the system exclusive data for archiving the complete bank of presets in the SP’s memory.
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 Receiving SysEx Data The SP is able to receive System Exclusive data at any time without any special prior setup.

  • Page 43: System Utilities

     

  

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 I nterface D. System Utilities Menus System Utilities provide a set of useful system commands, including commands to calibrate, restore factory defaults and set global system options.
  • Page 44 System Utilities menu. The sixth page of the System Utilities menu allows you to calibrate the Slim Phatty. In the past, calibration of analog synthesizers had to be performed manually by experienced service personnel. The SP’s built-...
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 I nterface CALIBRATION (con’t) NOTE CALIBRATION: This calibration option allows you to select Note calibration. This calibrates individual notes exactly for each oscillator and octave setting.
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 CALIBRATION (con’t) PITCH WHEEL AMOUNT: This option allows you to select Pitch Wheel Amount calibration.
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 I nterface CALIBRATION (con’t) OSCILLATOR 2 FREQUENCY (OSC2 FREQ): This option allows you to select OSC2 Frequency Calibration. This calibrates the OSC2 FREQ control so that turning the editing dial all the way CCW turns OSC2 down exactly a fifth (-7 semitones) and turning all the way CW turns OSC2 up exactly a fifth (+7 semitones).

  • Page 48: Performance Sets

     

  

  

  

  

  

  

  

  

  

  

  

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 Performance Sets Performance Sets is a feature that allows you to customize the order of SP presets for a live performance situation or to enhance your productivity in a studio environment.
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 I nterface Editing Performance Sets To edit a Performance Set, use the CURSOR key to select the Performance SET number (1-4), ENTRY location (1-8) and PRESET (00-99).

  • Page 50: Activating The Arpeggiator And Latch

     

  

  

  

  

  

  

  

  

  

  

  

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 Activating the Arpeggiator and Latch Turning the Arpeggiator ON/OFF When a preset has the Arpeggiator function enabled, you turn the Arpeggiator ON and OFF by pressing the...
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 I nterface Arpeggiator Examples The Arpeggiator takes the currently played note or group of notes and forms an arpeggio based on the Arpeggiator Menu settings.

  • Page 52: How The Sp Handles Midi

    Preset parameter values in the menus; this gives you total control of all SP sound parameters via MIDI. The tables on the following pages list all MIDI CC messages and values for the Slim Phatty. NOTES: 1.  

...
  • Page 53 Selects the number of filter poles 0 (1), 32 (2), 64 (3), 96 (4) FILTER VELOCITY SENS Sets the amount of filter velocity sensitivity See table for list of values Slim Phatty MIDI CC messages  

  

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  • Page 54 64 (HIGH), 96 (LAST) MOD WHEEL 1 (MSB) Modulation Performance Control 0 – 127 (SEE NOTE 1) 33 (LSB) Slim Phatty MIDI CC messages  

  

  

  

  

  

  

  

...
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 I nterface TIME VALUE CLOCK DIVIDER VALUE (SP DISPLAY) 1/32 note 1/32 Dotted 1/32 note 1/32 DOT 1/16 note 1/16 Dotted 1/16 note...

  • Page 56: Appendices

    MIDI Clock rate it received. If you hear a change in the rate of the LFO when you stop sending a MIDI Clock signal, it is a sign of jitter or instability in your MIDI Clock source. The Slim Phatty performs a running average of the clock pulses it receives, so the more stable your MIDI Clock source, the smoother the resulting LFO waveform will be.

  • Page 57: B - Arpeggiator Clock Source

     

  

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 A ppendices Appendix B - Arpeggiator Clock Source There are three Arpeggiator Clock Sources: Internal (INT), LFO, and MIDI Clock (MIDI). Detailed descriptions of these clock source options appears below.

  • Page 58: C - The Calibration Preset

     

  

  

  

  

  

  

  

  

  

  

  

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 Appendix C - The Calibration Preset The SP has a specific Calibration Preset that is stored in a non-volatile memory location labeled ‘CA’...

  • Page 59: D - Accessories

    Phatty. Ships with the required washers and screws. Wood Frame For those who wish to use their Slim Phatty as a table-top module, Moog Music offers a custom wood frame that enhances the look of the SP and provides that classic vintage vibe.

  • Page 60: E - Tutorial

     

  

  

  

  

  

  

  

  

  

  

  

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 Appendix E - Tutorial For those who are new to the world of electronic music, let’s take a few moments to go through the basics of sound and synthesis.
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 A ppendices The Subtractive Synthesis Model The Oscillator is the starting point of Subtractive Synthesis, for it is here that the initial sound is created. The oscillator creates electrical vibrations which function in a manner similar to the strings of a guitar;...
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 Like the square wave, the triangle wave only contains odd harmonics, but the levels of the harmonics in a triangle wave are much less.
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 A ppendices Returning to our Subtractive Synthesis model, the first of the auxiliary components is the keyboard. The keyboard provides a familiar musical instrument ‘interface’ that produces a control voltage and trigger signal whenever a key is pressed.
  • Page 64 This is especially true of the oscillators and envelope generators (the Little Phatty has two of each), but may also be true of filters, amplifiers and LFO’s. For example, the Moog Voyager has three oscilla- tors, two filters, two amplifiers, an LFO, two extensive modulation sections, and the Voyager’s third oscillator can act as an additional LFO.

  • Page 65: F - Midi Implementation Chart

     

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 A ppendices Appendix F - MIDI Implementation Chart MIDI Implementation Chart Moog Music Date: 10/1/10 Slim Phatty Analog Synthesizer Version 1.0 FUNCTION TRANSMITTED RECOGNIZED REMARKS...

  • Page 66: G - Service & Support Information

    Music before returning any product. You can request an RMA number on-line using the ‘Product Register’ link on the Moog Music home page or call us at (828) 251-0090. The Slim Phatty must be returned in the original inner packing including the foam inserts. The warranty will not be honored if the product is not properly packed.

  • Page 67: I - Using The Cp-251 With The Slim Phatty

    Attenuators to have two separately controllable modulation sources for the SP. Pitch Transposition: Using an Expression Pedal (like the Moog EP-2), you can program the CP-251 to transpose the SP’s pitch to any interval desired and have it ready any time you need it. Here’s the connection: - Connect the EP-2 to an Attenuator Input.
  • Page 68 We’ve just scratched the Surface These are just a few of the synthesis possibilities afforded by the Slim Phatty and the CP-251. Other CV equipment like our Moogerfooger® analog effects can be added to expand the sonic potential of the Slim Phatty.

  • Page 69: J - Specifications

     

  

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 A ppendices Appendix J - Specifications Type: Performance Controls: Programmable monophonic analog Modulation Wheel: 0 to 100% synthesizer w/100 presets Fine Tune: ±3 semitones Glide ON/OFF Synth Engine: Octave UP/DOWN: ±2 octaves...

  • Page 70: Glossary

    GLOSSARY  

  

  

  

  

  

  

  

  

  

  

  

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 Glossary Here are a few key terms that cover the basics of sound generation as used in the Little Phatty synthesizer.
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 G lossary EEPROM – EEPROM stands for ‘Electrically Erasable Programmable Read Only Memory’. This is a type of digital memory used to store information, even after the power is turned off. In the Little Phatty, the EEPROM is used to store global settings and presets, and operating system parameters such as tuning information.
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 Low Frequency Oscillator –...
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 G lossary Sound – Audible vibrations of air pressure. For electronic sounds such as those produced by a synthesizer, loudspeakers are used translate the electrical vibrations into the changes in air pressure which we perceive as sound.

  • Page 74: Slim Phatty Preset List

    Slim Phatty Presets A list of the Slim Phatty Presets appears on the next page. Many of the preset names are self-explanatory, some are for fun, and all are all worth auditioning. As you listen to the presets, don’t forget check out the Mod Wheel function for additional performance control.

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