Walrus Audio ARP-87 User manual

9 volt DC, Center Neg.
100ma min*
Output Jack
Bypass LED
Bypass Switch
Rate LED
Tap Input
Tap Switch
Input Jack
*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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LEVEL –Adjust the level of the repeats. Turn it clockwise to increase the volume of the echoes.
DAMPEN -Controls the overall tone on the repeats. It is a low-pass filter, so turning this knob clockwise
will open the filter and brighten the repeats. Counterclockwise will close the filter and darken the
repeats.
repeats –Adjusts the number of repeats that are heard. Go from one repeat at full counterclockwise,
to near infinite at full clockwise.
RATIO –Sets the tempo multiplier for the tap tempo algorithms (Digital, Analog, Lo-Fi), and it adjusts
the delay time for the Slap algorithm.
X–The X knob changes functions depending on which Algorithm you are using. It adjusts a specific
parameter in each algorithm.
Digital - Modulation depth. Analog - Modulation depth.
Lo-Fi - Filter width. Slap - Modulation depth.
PROGRAM –Selects which algorithm is used to generate the delay signal. Choose from Digital (D),
Analog (A), Lo-Fi (L), and Slap (S).
MOMENTARY BYPASS –When the switch is in off position,
press and hold to temporarily activate the effect to add a moment
of delay texture. Releasing the switch turns the effect off. When
the effect is on, press and hold the bypass switch to momentarily
ramp the X parameter to maximum. Releasing the switch sets the
X parameter back to the knob location.
MOMENTARY MAX REPEATS -Press and hold to
temporarily ramp the repeats to maximum. Release to
set the repeats back to the knob location.
The ARP-87 can be run in trails or no trails mode. In trails
mode, when you turn the pedal off, the delay trails die off
naturally. In no trails mode, the delay trails are abruptly
cut off when you turn the pedal off. To toggle between
either mode, hold down the bypass switch for 1 second
while applying power to the pedal. Unplug power and
repeat to toggle to the other mode.
CONTROLS
The ARP-87 is a compact, feature-rich delay, packed with a large pallet of inspirational
delay tones. Featuring four main algorithms: Digital, Analog, Lo-fi, and Slap Back, the
ARP-87 can cover some serious ground in the world of echoes. The Digital algorithm
boasts pristine, crystal clear repeats great for rhythmic riffs. The Analog setting works
well to add warmth and dimension to chords and lines without getting in the way. The
Lo-Fi algorithm, with its adjustable frequency range on the repeats, goes from warm,
warped, and murky, to strait AM radio. Finally, the Slap setting makes it easy to dial in a
great slap back echo perfect for smoking chicken pickin’ runs. With other features like
our smart bypass switching, and momentary knob ramp, the ARP-87 provides endless
creative opportunities that are waiting to be explored.
MOMENTARY FUNCTIONS
TRAILS MODE