User Manual

Table Of Contents

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Ignore the ALT controls (gray labels) until you are comfortable with the basic operation of the Raster 2.

For now, turn the RATE and DEPTH controls all the way down (7:00) and SHIFT control to center (12:00).

Put all toggle switches in their center position.

The BLEND, FDBK, and DELAY controls can be used as an 800 millisecond 3-knob delay.

Self Oscillation

The Raster's DELAY and FDBK knobs are tuned for exploration of self-oscillation and feedback. Start

with BLEND at center (12:00), FDBK at center (12:00), and DELAY at center (12:00). Reduce the DELAY

time until you hear a hollow, resonant sound, then play with the FDBK and DELAY controls

The FDBK control is scaled for inﬁnite feedback at 3:00 (∞) and greater than unity gain above that. The

feedback signal can get very loud, so use caution and protect your hearing.

Digital Delay Tricks

Unlike analog delay pedals, the Raster 2 does not change the pitch as you turn the DELAY knob. Fast

knob movements jump smoothly to the new delay time. Slow knob movements gradually change the

delay time, with the Raster analyzing the signal to minimize glitches.

Start with BLEND at center (12:00), FDBK at minimum (7:00), and DELAY at center (12:00). Play staccato

notes or a drum loop.

Quickly turn the DELAY knob to the maximum, pause, then turn it back to the middle. Then slowly turn

it between the minimum and maximum positions. Increasing the delay time will drag the audio, creat-

ing time stretch eects. Reducing the delay time will compress the signal, skipping slices of audio. By

experimenting with the speed and range of knob movements with dierent signals, you can get a range

of time stretching and glitchy stutter eects.

Now, adjust the DELAY knob for quarter note repeats. Increase FDBK to about 10:30 so the repeats

quickly fade out. While playing a steady rhythm (or drum loop), Move the delay range (right top) toggle

switch between the three positions. The delay time jumps between 8th notes, quarter notes, and half

notes, creating smooth rhythmic changes with no pitch shift.

Web Editor

We provide a web-based editor to conﬁgure your Context, access hidden parameters, and ﬁne-tune pre-

sets. See "Web Editor (beta)" on page 25 for more information.. It requires the Google Chrome brows-

er, and can be accessed at

https://www.redpandalab.com/content/apps/raster-editor/index.html

Note the "https" URL protocol. "http" will not allow Chrome to access MIDI devices