Magpie Devices

Bubbles v2 Mega User Guide


Hello, and thank you for supporting Magpie Pedals and getting yourself one of my effect pedals! Please feel free to use it with guitar, bass, synths, vocals or anything in between.

The pedal uses 9VDC power (2.1mm jack: center-negative).

Input is on the right side (black ring) and output is on the left (white ring).

Bubbles v2 Mega (PCB edition): Front Panel

Triple Bypass (right footswitch):

This pedal uses a unique bypass switching system that I call “Triple Bypass”, where you have three different “modes” for turning the pedal on and off:

  1. Short Press: Works like any regular pedal. Press to turn it on and then press to turn it off.
  2. Momentary/Hold: If you press and hold for about 1-2 seconds the pedal will enter a hold mode. Here it will simply stay in the state it entered when pressing down the button, for however long you decide to hold down the button, and then return when you release the button. So if you press down when the pedal is turned OFF it will stay ON for as long as you hold the button pressed down, and vice versa.
  3. Tap Tempo Bypass: If you quickly double tap the bypass button (either when on or off) the pedal will enter the Tap Tempo Bypass mode. Here the pedal automatically turns itself on/off in whichever tempo you tap. So to change tempo you simply tap a new tempo.

N.B. Bubbles v2 continuously counts the time since your last tap. So if you have been in a tempo for some time and give the footswitch another single tap, it will set your new tempo based on the time between the pervious tap and the new tap - upto a maxium length of around 1min.

To exit Tap Tempo Bypass you simply press and hold the button for about 2 seconds. Note that when exiting this mode the pedal will be ON (regardless of if the pedal is in an OFF or ON state).

info:

Bubbles is a PT2399 delay with the time parameter being controlled by a ten step sequencer.

The new and improved V.2 has two different modes of operation:

  1. Tap Tempo Mode, where you set the sequencer tempo by either tapping on the left footswitch or adjusting the speed knob (). It will automatically switch over to whatever you change last.
  2. Manual Mode, where the sequencer is frozen and you move by either pressing the left footswitch or connecting a 5V CV-Clock to the 3,5mm jack on the back. Additionally the “tap tempo bypass” will sync to the sequencer in manual mode so that every time the pedal turns back on, it has moved a step in the sequencer. To change between modes you simply press and hold the left footswitch for about 1-2 seconds.

Controls:

X to control the mix level

The top-left “X” knob is your Mix control. From 100% dry, to introducing delay, to slightly overdriving the delay lines.

Wave for feedback control

The center-top “Wave” knob controls your repeats/feedback, setting how long it takes for the delay taps to die away. When set fully clockwise the delays will self-oscillate (more at shorter delay times).

The Primary Time control ball

The top-right big “Bubble” knob is your Primary Time control that decides the range of the ten mini pots. Fully clockwise for max range.

Snail to Rocket speed control

The bottom-left “Snail|Rocket” knob is you sequencer Speed control - from slow as a snail to fast as a rocket.

Step control knob

The bottom-right many “Bubbles” knobe is where you set how many steps the sequencer will utilize - from 1-10.

Mini-Pots: The ten mini-pots are all identical time pots (scaled by the master time knob).

Since “jumping” in delay time affects pitch, they are reversed, so that unlike your standard time knob which increeses delay time when turned clockwise, the mini pots go counter clockwise for longer delay time. We did this because it makes more sence in a sequencer for clockwise to lead to a higher pitch (shorter time) and counter clockwise for lower pitch (longer time).

N.B. Going fully counter clockwise on the mini-pots with the PRIMARY TIME fully clockwise will be too much for the PT2399. Meaning that it will silence that step. If the first mini pot is in this state when plugging in power, Bubbles may get stuck in this silent mode and no sound will pass through the PT2399. To solve this you simply unplug power and put the MASTER TIME knob counter clockwise before plugging power back in.