Electro-Harmonix Slammi Plus User Manual
SLAMMI PLUS
Polyphonic Pitch-Shifter/Harmony Pedal
Thank you for your purchase of the Electro-Harmonix Slammi Plus. The Slammi
Plus polyphonically transposes the pitch of your instrument by various selectable
intervals over a +/-3 octave range. In addition to standard musical intervals, you
can also create a rich detune effect in which the harmonies are only slightly set
apart. You can set the pitch-bend upwards, downwards, or even up and down at
the same time, and then blend in your dry sound to create pitch-shifted harmonies.
Switch to the cross-fade (X-FADE) mode to sweep between the dry signal and
the fixed transposed pitch. Then use the BLEND knob to create the perfect mix
between the dry and transposed notes. Spanning a range from conventional
sounding whammy bar effects to otherworldly harmonically pitch-shifted bends,
the depth and flexibility of the Slammi Plus will expand your sonic arsenal.
NOTES AND SPECIFICATIONS
The Slammi Plus utilizes a high quality, buffered bypass.
Input Impedance: 2M
Nominal Output Impedance: 750
Current draw: 24mA
GETTING STARTED
Connect your instrument to the INPUT jack and connect your amplifier to the
OUTPUT jack. Toggle between buffered bypass and effect mode by firmly
pushing the Slammi Plus pedal downward, in the toe direction, until you hear/feel
the footswitch click. The Slammi Plus does not provide a visual indication that it is
in either effect or bypass mode or that it is powered up. The Slammi Plus always
powers up in bypass mode.
While in effect mode, rock your foot back and forth on the pedal to achieve
various pitch-bend or cross-fade effects, depending on the setting of the knobs
and switches. Refer to the bottom of the pedal for a quick printed reference to
the function of each knob and switch, or see CONTROLS and CONNECTIONS
on the next page for complete details. The knob and switch settings are highly
dependent on each other, so take your time to learn how they interact.
Besides sweeping the pedal continuously, you can use the Slammi Plus to create
pleasing fixed settings at certain spots along the pedal’s sweep. Listen to the pitch
intervals or cross-fade mixes as you rock the pedal. When you hit just the right
spot, carefully remove your foot from the pedal so that the sound remains fixed.
CONTROLS AND CONNECTIONS
D
m2
M2
m3
M3
P4
P5
M6 1 2
3
Detune
Minor
2nd
Major
2nd
Minor
3rd
Major
3rd
Perfect
4th
Perfect
5th
Major
6th
1
Oct 2 Oct
3
Oct
D
m2
M2
m3
M3
P4
P5
M6 1 2
3
Det-
une
m2
up
+
Detune
down
M2
up
+
M6
up
m3
up
+
P5
up
M3
up
+
P5
up
P4
up
+
P5
down
P5
up
+
1 Oct
down
M6
up
+
P5
down
1 Oct
up
+
1 Oct
down
2 Oct
up
+
1 Oct
down
3 Oct
up
+
1 Oct
down
Flip the PEDAL switch to choose the function of the foot pedal: select either PITCH
or X-FADE mode.
In PITCH mode: the foot pedal bends the pitch of your notes. The toe position
yields maximum pitch bend, while the heel position’s pitch bend is set by the PITCH
MIX knob.
In X-FADE mode: the foot pedal crossfades from your dry signal to the transposed
signal at an interval set by the SHIFT knob. The cross-fade effect will vary
depending on the DIR toggle switch setting:
DIR UP () or DOWN (): the dry signal is in the heel, and the pitch
shift effect is in the toe.
DIR DUAL: the heel pitch is set by PITCH MIX knob (ranging from -1
Octave to +1 Octave), and the toe’s upward pitch is set by SHIFT knob.
SHIFT Knob Rotary Switch The 11-position SHIFT switch selects the maximum
bend setting or the interval of chromatic transposition. The table below details the
pitch effect relative to the original pitch.
Note: “Detune” uses a slight interval to create a detune effect that is close to a chorus or doubling effect.
DIR (direction) Toggle Switch The DIR switch selects whether pitch is shifted
up (), down (), or both simultaneously (DUAL).
The DUAL setting outputs two pitch-shifted signals. The first transposed signal
follows the SHIFT knob as if in UP mode. The second transposed signal depends
on whether the PEDAL switch is set to PITCH or X-Fade:
1. When PEDAL is set to PITCH mode, the secondary shifted signal bends
at the same rate as the primary signal—usually in the opposite direction,
but not always. The secondary signal maxes out at a musically useful
harmony that varies by the interval set with the SHIFT knob. This table
lists the DUAL mode SHIFT knob settings with PEDAL set to PITCH mode:
2. When PEDAL is set to X-FADE, the secondary shifted signal is set by
the PITCH MIX knob and does not bend. The volume of the secondary
signal decreases by sweeping the pedal from heel to toe.
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