User Manual for Walrus Audio Lüm Texture Engine

Quick guide from the manual

The Lüm Texture Engine is a limited edition effects pedal featuring three unique granular and textural reverb modes. To ensure optimal performance, always use a 9V DC, center-negative power supply rated at 100mA or more. Isolated power supplies are highly recommended to avoid noise; daisy-chaining is not recommended. If you need assistance, you can contact support at [email protected].

Controls

The pedal features five main knobs to shape your sound:

• Decay: Controls the decay on time-related parameters. In Mode I, it controls feedback of the sampled delay line. In Mode II, it controls the decay of the sampled reverb tank. In Mode III, it controls the decay of the forward algorithm reverb tank.
• Filter: Adjusts the cutoff of a global synth-style low-pass filter.
• Mix: Adjusts the balance between wet and dry signals. Counterclockwise is more dry, clockwise is more wet.
• X: Controls grain size in Modes I and II, and reverse reverb feedback in Mode III.
• Stretch: Adjusts the global sample rate from 0.5x speed to 2x, affecting all time-based parameters.

Modes

Use the Mode toggle switch to select between three programs:

• MODE I: A grain cloud with dual granular taps reading from a feedback delay line. The X knob controls grain size and glitch frequency.
• MODE II: A grain verb with dual granular taps reading from the delay memory of a reverb algorithm tank.
• MODE III: A forward reverb algorithm running into a reverse reverb algorithm, creating a rhythmic interaction. Use the Stretch knob to adjust the speed of this interaction.

Presets

The Lüm has three onboard presets (Red, Green, and Blue). Scroll through them by pressing both stomp switches simultaneously.

To save a preset:

1. Scroll to the preset color you wish to modify.
2. Adjust the knobs and switches to dial in your desired sound. The preset LED will turn purple, indicating the preset has been modified.
3. Hold down both the Bypass and Moment stomp switches until the preset LED blinks. The preset is now saved, and the LED will return to the preset color.

Momentary Automation

The Moment switch activates an automation glide effect on one of the five knobs, moving from its current setting to a defined target.

• To assign a target: Hold the Bypass switch while the pedal is active (the Bypass LED will blink), then turn the knob you wish to control.
• To adjust glide time: Adjust the Mode toggle while holding down the Bypass switch to cycle between 10ms, 1000ms, and 5000ms.

Factory Reset

To perform a factory reset, hold down both foot switches while plugging in power to the pedal. Continue holding both switches until the Preset LED starts to flash, then release. The pedal will reset to Trails mode with the three default presets loaded.

Specifications

• Bypass: Buffered Bypass
• Input/Output: 1 x 1/4 inch TS
• Input Impedance: 1M Ohms
• Output Impedance: 100 Ohms
• Dimensions (including knobs): 4.77 inches x 2.6 inches x 1.39 inches