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4ms Company Mini PEG User Manual

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The Mini PEG is a clock-synced envelope generator and LFO whose envelope times are set by the
time between clock pulses or "pings". The Mini PEG is the latest version of the classic 4ms Pingable
Envelope Generator.
Mini PEG features:
• Envelope length set by incoming clocks or "pings"
• Ping button (tap tempo) or external clock/triggers set the envelope time
• Div/Mult knob and CV jack divide and multiply ping clock from /32 to x16
• Shape knob with full CV control for waveshaping the output envelope, includes various
combinations of exponential, linear, logarithmic and interpolated curves
• Cycle button and gate jack for looping envelopes
• Scale knob acts as attenuating inverter for main envelope output
Maximum 9.5V peak-to-peak
•
• Offset knob for setting DC offset, ranging from -9.4V to +9.4V
• End-of-Fall (EOF) output jack goes high when envelope finishes a fall portion and low when
envelope begins a fall portion
Jack can also be configured as End-of-Rise, Half-Rise, or Tap Clock Out
•
• ENV OUT jack outputs scaled/offset envelope
• 5V ENV jack output always produces a 0V to +5V envelope, independent from scale/offset
• Trigger jack starts or re-starts an envelope
Can be configured as Quantized Trigger, Async Trigger, or Async Gate
•
• 8HP Eurorack module
Mini PEG
4ms Company
User Manual 1.0 – September 12, 2022
Ping
=
/2
x2
3
3
4
4
5
5
6
6
7
8
16
12
/32
x16
Div/Mult
Shape
ENV OUT
EOF
Shape CV
Trigger
Div
Mini PEG
7
8
Cycle
Scale
Offset
5V ENV
Cycle

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Summary of Contents for 4ms Company Mini PEG

  • Page 1 Mini PEG The Mini PEG is a clock-synced envelope generator and LFO whose envelope times are set by the time between clock pulses or “pings”. The Mini PEG is the latest version of the classic 4ms Pingable Envelope Generator. Mini PEG features: •...

  • Page 2: Table Of Contents

    Setting up your Mini PEG 1. Power off your Eurorack system. 2. On the back of the Mini PEG you will see a 16-pin header. Connect one end of the power cable to a 16-pin Eurorack power header on your power supply distribution board and the other end to the Mini PEG with the red stripe on the power cable oriented towards the bottom of the module.

  • Page 3: Overview

    Scale and Offset knobs. Sending a trigger into the Trigger jack will produce an envelope. The Mini PEG can also function as an LFO by producing envelopes constantly when the Cycle button is engaged, or when a gate is held high on the Cycle jack.

  • Page 4: Control Details

    Note: in System Mode, you can disable this free-running feature (thus, giving the Mini PEG two external pulses will output just one envelope and then stop) See the System Mode section.

  • Page 5: Cycle

    Cycle The Cycle function makes the envelope self-cycle (LFO mode). When this button is lit, Cycle the envelope will keep running without needing any external triggers. Pressing the Cycle button will toggle the cycle state on/off. The Cycle jack toggles the cycling state. By default, when a gate is applied to this jack, the Cycle button will toggle state (on→off and off→on).

  • Page 6: Env Out

    Since it goes well into the audio range, the Mini PEG can be used as a rudimentary lo-fi harmonizer (e.g. sub-octave generator). Be aware that when using the Mini PEG as an audio generator, small amounts of jitter on the incoming clock will cause large amounts of audible distortion and glitches on the output.

  • Page 7: Sync And Async Modes

    • You can toggle modes by holding down Cycle, tapping Ping, then releasing Cycle. In Sync mode, the Ping button flashes cyan. In Async mode, the Ping button flashes white. Figure 1 illustrates envelopes in each mode. The Mini PEG begins cycling in Sync mode: each envelope starts o n a ping clock pulse.

  • Page 8: Using The Trigger Jack In Sync And Async Mode

    Half-Rise, the Div/Mult parameter will not affect the tempo being output on this jack. More importantly, the tempo you tapped will continue to be output even if you are clocking the Mini PEG with an external clock at a different tempo.

  • Page 9: Updating Firmware

    Ping jack, this tempo will be sent 1:1 to the Clock Bus. Changing the Div/Mult amount will not change the signal on the Clock Bus. When using the Mini PEG to send a clock, you must ensure there are no other modules configured to send a clock over the same Clock Bus. Having two modules send clocks on the same Clock Bus will result in unpredictable behavior, possibly causing erratic tempos and/or making all Clock Bus modules fail to work properly.

  • Page 10: Viewing The Firmware Version

    White System Mode System Mode allows you to change the way the Mini PEG works. To enter System Mode, hold down the Cycle button for 3 seconds. When the lights flash to confirm entry into System Mode, release the button.
  • Page 11 Cycle button shows whether the maximum slew time is limited. When slew is not limited, popping or clicking can be heard when using the Mini PEG with a VCA. Slew limiting prevents this by limiting the fastest rise or fall time. Skew is never limited if the envelope period is in the audio range. Press the Ping button to toggle.

  • Page 12: Electrical And Mechanical Specifications

    Electrical and Mechanical Specifications • Mini PEG 8HP Eurorack format module • 0.95” (24mm) maximum depth (includes power cable) • 16-pin Eurorack power header • • Power consumption +12V: 55mA • -12V: 30mA • • Envelope Outputs Maximum voltage range (ENV OUT): -9.4V to +9.4V •...

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