EarthQuaker Devices Towers

Three Distinct Modes of Operation

• Manual Mode
  The filter frequency is manually changed by adjusting the Frequency control. This works across the stereo field, with the left channel opposite the right.

• Envelope Mode
  The filter frequency is changed with an envelope that is controlled by picking dynamics. In this mode, the Frequency control adjusts the sensitivity of the envelope.

• LFO Mode
  The filter frequency is controlled by a slow moving LFO, and the Frequency control adjusts the rate. This mode also sweeps across the stereo field creating a slow panning filter effect.

Controls:

• Mode: This is a 3-position toggle switch that changes the mode of operation.

• Length: Controls the length of the reverb – lower settings are shorter, higher settings are longer. This control also has a secondary function to adjust the speed of the Stretch feature. 

• Mix: This sets the overall level of the effect, balancing the ethereal with the earthly. 

• Stretch Footswitch: Stretch slows down the entire digital system of Towers. As a result, the reverb length is doubled, the spectrum of frequencies is altered and a pitch bending effect can be heard throughout the morphing process.

• Frequency: This controls the filter frequency and has several different functions depending on which mode is selected. 

• Filter: Controls how much the resonant low pass filter is mixed into the reverb pathways, determining the depth of harmonic resonance. 

• Preset: Selects which user preset to use in preset mode, allowing you to recall your favorite mystical configurations.

• Activate Footswitch: This turns the effect on and off. 

SPECIFICATIONS

Dimensions: 4.75 x 4.25 x 2.50 in. (121 x 108 x 64 mm) with knobs
Current Draw: 85 mA
Input Impedance: 500 kΩ
Output Impedance: 100 Ω
EXP Jack Internal Connections

• Tip= Wiper (CV) 

• Ring= 3.3V 

• Sleeve= Ground 

Tails or Full Bypass Switching
Towers can operate in two different bypass states: Tails or Full Bypass. It comes factory set in Tails Mode which allows the reverb effect to naturally decay after the effect is bypassed and is indicated by a Green Activate LED. Full Bypass will cut the reverb effect completely when the effect is bypassed and is indicated by a Red Activate LED. 

Power
This device takes a standard 9-volt DC power supply with a 2.1 mm negative center barrel. We always recommend pedal-specific, transformer-isolated wall-wart power supplies or multiple isolated-output supplies. Pedals will make extra noise if there is ripple or unclean power. Switching-type power supplies, daisy chains and non-pedal specific power supplies do not filter dirty power as well and let through unwanted noise. DO NOT RUN AT HIGHER VOLTAGES!

Artwork: Artwork by Dave Neeson