Walrus Audio Meraki User guide

You are about to experience the Meraki. Cozy up and immerse yourself in true stereo
analog delay with eight MN3005 chips to create warm, rich repeats capable of 1200ms
of delay time with parallel, ping-pong and series delay modes. Independently control the
delay times and modulation of the left and right channels to create syncopated repeats or

keep them locked in to the same timing for classic delay sounds.

Only use a 9 volt DC, Center Negative, 500mA to power the pedal.

The use of an isolated power supply is recommended for powering all Walrus Audio Pedals.

Daisy chain power supplies are not recommended.

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CONTROLS

Mix: Adjust the overall level of the repeats in both the
left and right channels. Full Wet/Dry Mix; 50/50 is around
2 O’Clock. Note: This control adjusts the left and right
simultaneously.

Feedback Left: Adjust the amount of repeats in the left
channel, from a single repeat to full oscillation.

Feedback Right: Adjust the amount of repeats in the right
channel, from a single repeat to full oscillation.

Mod (Mod Rate): Use to adjust the depth of modulation in
the repeats, creating a chorus/vibrato effect.

Hold the Bypass switch and use the Mod knob to adjust
the mod rate.

CONTROLS

Time: Use to adjust the delay time. Clockwise for
longer delay times, counter-clockwise for shorter
delay times. From 80-1200ms. Use 1/8th division
for the shortest delay time.

Tone: Use the Tone control to adjust a Tilt EQ in
the delay lines. Clockwise will cut the lows and
boost the highs, and counter-clockwise will cut
the highs and boost the lows.

Tap Division Left Switch (Mod Wave Shape): Choose between quarter note, dotted eighth, and
eighth note repeats in the left channel.

Hold the Bypass switch and use the DIV L switch to choose between Sine, Square, and Random
wave shapes.

Tap Division Right Switch (Mod Phase): Choose between quarter note, dotted eighth, and
eighth note repeats in the right channel.

Hold the Bypass switch and use the DIV R switch to choose between 0-90-180 out of phase.
0 is in phase, for classic mod sounds, and 180 is out of phase for a wide mod sound with the left
rising while the right falls.

CONTROLS

Feedback Mode Switch: Choose between Parallel, Ping-Pong, and Series delay lines.

Parallel: Left and Right feedback paths are independent of each other. Left repeats feedback

into the left input. Right repeats feedback into the right input.

Ping-Pong: The Left repeats feedback into the right input, and the right repeats feedback to
the left input; the repeats bounce from one side to the other.

Series: The Left repeats feedback into the Left channel and is sent to the input of the Right
delay line as well. The right repeats, with the addition of the left repeats feedback into the
right input. Use this mode to create interesting syncopated delay rhythms.

Sync/Left/Right Switch: Use to select which side of the pedal you want to adjust. Sync is both
left and right, L is Left only, and R is right only.

This is where the magic of the pedal can happen. You can have fully independent time, divisions,
and mod depth/rate/shapes. With mismatched timings, try setting the feedback JUST before it
oscillates, then play with the divisions to create interesting pad-like sounds.

Tip: Use MIDI to get really creative with how you adjust timings to create an instrument
out of this pedal.

CONTROLS

Bypass Switch: Use to turn the pedal on/off. Hold to access secondary controls as mentioned
above.

Bypass Modes: Buffered Bypass for Trails (Default) or True Bypass Relay (No-Trails).
Hold Bypass while plugging in the power connector to change modes.

Tap Tempo Switch: Use to set the delay time. Hold to maximize the feedback (Oscillation) in
the left and right channels. Release to set back to levels on the Feedback knobs.

External Tap/Expression: Use to control the tap tempo or use an expression pedal to control
the time or modulation depth controls. Remove the back plate to access the internal dip
switches to change between external tap or expression.

Time/Modulation selection: When the pedal is engaged, hold down both stomp switches.
While still holding down the switches, move either the Time or Mod knob to assign which
control is adjusted via expression pedal. More expression assignment options are available
via MIDI.

Dip Switch Settings:
Tap - 1 ON, 2 OFF, 3 OFF
Expression - 1 OFF, 2 ON, 3 ON

FEEDBACK
CONTROL

Feedback Control: Use these internal trim pots to adjust how quickly the delay repeats go into
self-oscillation. In other words, this changes how quickly your pedal takes off into space and
makes the crazy “wherp wherp” noises while pressing and holding the TAP/OSC switch.

Turn the trim pots clockwise to slow down how quickly the pedal oscillates or turn counter­clockwise to speed up how quickly the pedal will oscillate. Note that there are two trim pots.
One for the left channel and one for the right.

LEFT RIGHT

MIDI

MIDI In/MIDI Thru: Connect MIDI cable to control the digital parameters of this pedal.

Change MIDI channel: Before applying power, hold down both stomp switches and then apply

power. The LEDs will start to ash. While still holding down the switches, send a MIDI message
assigned to the channel that you want the pedal to be on and then the pedal will enter normal
operation and you can release the switches.

CONTROL CC NUMBER VALUE RANGE SETTING

Division L 27 0-42; 43-85; 86-127 .1/8; 1/8; 1/4

Division R 28 0-42; 43-85; 86-127 .1/8; 1/8; 1/4

Sync 26 0-42; 43-85; 86-127 L; R; S

Feedback Path 31 0-42; 43-85; 86-127 P-P; S; P

Time 14 0-127

Mod Depth 22 0-127

Time R 15 0-127

Mod Depth R 23 0-127

Mod Rate 24 0-127

Mod Rate R 25 0-127

Mod Shape L 102 0-42; 43-85; 86-127 Square; Random; Sine

Mod Shape R 103 0-42; 43-85; 86-127 Square; Random; Sine

Mod Phase 104 0-42; 43-85; 86-127 180; 90; 0

Bypass 29 Off 0, On 127

Feedback Ramp 85 Off 0, On 127

Clock Bypass 89 Off 0, On 127

Tap Tempo 30 127

Time 0-21;
Mod 22-42;

Expression Destination 86

Time R 43-63;
Mod R 64-85;
Mod Rate 86-106;
Mod Rate R 107-127

Bypass Mode 87 Trails 0, No Trails 127

TECHNICAL INFO

Frequency Response: 60Hz To 20kHz

Noise Floor: -94dBu (Dry), -86dBu (Wet)

Input Impedance: ~1M Ohms

Output Impedance: ~100 Ohms

Power Requirement: 9VDC, 500mA

Bypass options:

• True bypass (no trails)

• Buffered bypass (trails)

Size Including Stomp/Jacks:

Height: 2.35” / 59.69mm

Width: 4.98” / 126.49mm

Depth: 5.86” / 148.84mm