User Manual

MODE TOGGLE SWITCH
The MODE toggle switch selects whether the pitch is shifted up, down or both
simultaneously relative to the root. Dual mode outputs two pitch-shifted signals. One
of the shifted signals follows the SHIFT knob as if in UP mode. The other shifted
signal creates a musically useful harmony according to the SHIFT knob setting.
DUAL mode SHIFT knob Settings:
D m2 M2 M3 P4 P5 M6 m7 1 2 3
Detune Deep
Detune
M2
up
+
M6
up
M3
up
+
P5
up
P4
up
+
P5
down
P5
up
+
1 Oct
down
M6
up
+
P5
down
m7
up
+
M6
up
1 Oct
up
+
1 Oct
down
2 Oct
up
+
1 Oct
down
3 Oct
up
+
1 Oct
down
LATCH BUTTON
The LATCH button selects Latch or Momentary mode. This affects how the footswitch
and EXP jack input behave. When the LATCH button is down, Latch mode is enabled.
The footswitch toggles between effect and bypass each time you press and release
the footswitch; the EXP input continuously varies pitch. When the LATCH button is in
the up position, Momentary mode is selected. The effect is only on while the
footswitch is held down, otherwise the Pitch Fork is bypassed; the EXP input varies
the glissando rate of the momentary footswitch.
BYPASS FOOTSWITCH & STATUS LED
The footswitch toggles between effect on and buffered bypass. In Latch mode, each
press and release of the footswitch toggles between effect and bypass modes. In
Momentary mode, when the footswitch is held down, the effect is on, when the
footswitch is released, the Pitch Fork enters bypass. The status LED lights when in
Effect mode.
EXP JACK
EXPression input jack accepts a TRS expression pedal connector or a Tip-Sleeve 0-5V
control voltage input. The expression pedal should ideally use a 10k potentiometer
with linear rather than audio taper. It must have the wiper connected to TIP and toe-
down connected to RING. Pedals made by some manufacturers do not conform to
this convention, and would need a special cable to swap RING and TIP. Some
suggested Expression Pedals: EHX Expression Pedal, M-Audio
®
EX-P, Moog
®
EP-2 &
EP-3, Roland
®
EV-5 or Boss
®
FV-500L.
 LATCH MODE - the Expression/CV input controls pitch shift amount,
ranging from unity, or no pitch shift, in the heel position to the interval set
by the SHIFT knob for the toe position. Pitch varies continuously from heel
to toe in all settings.
 MOMENTARY MODE - the Expression/CV input controls glissando rate for
the Pitch Fork’s footswitch. When the bypass footswitch is pressed, the Pitch
Fork jumps from bypass to the pitch shift interval set by the SHIFT knob.
The amount of time it takes to reach the SHIFT knob’s interval setting is the
glissando rate. When the footswitch is released, pitch will return to unity by
the same rate. When your expression pedal is heel-down the rate is 4ms, in
 toe-down the rate is 2sec. When no device is plugged into the EXP input the
default glissando rate is 60ms.
SAVING NEW GLISSANDO RATE SETTING FOR PITCH FORK FOOTSWITCH
1) Set LATCH mode button to the Momentary or up position.
2) Connect expression pedal or CV device to EXP jack.
3) Press and release Pitch Fork’s footswitch while adjusting expression pedal or CV
device until you hear desired glissando rate. Leave external device in current
setting.
4) Press and hold down the Pitch Fork’s footswitch.
5) Press LATCH button so it changes to Latch mode. LED flashes to confirm.
6) Release the footswitch.
7) The new glissando rate is now saved. Remove plug inserted into EXP jack,
change back to Momentary mode and use footswitch to confirm new rate.
RESTORING FACTORY DEFAULT FOR GLISSANDO RATE
1) Make sure nothing is plugged into EXP jack.
2) Set LATCH button to Latch mode, the down position.
3) Press footswitch so that Pitch Fork is in Bypass.
4) Press and hold down the Pitch Fork’s footswitch.
5) Press LATCH button so it changes to Momentary mode. LED flashes to confirm.
6) Release the footswitch.
OUTPUT JACK
Outputs the wet/dry mix set by the BLEND knob.
CHANGING BETWEEN LATCH AND MOMENTARY WHEN EXPRESSION PEDAL
IS CONNECTED
When in Latch mode and you switch to Momentary mode the expression pedal
position is ignored. The stored glissando rate will take precedence until the
expression pedal is moved from current position.
LED ON STARTUP
The LED will blink 4 times then hold on the 5
th
if in latch mode or toggle off if in
momentary. This happens when AC power is applied or you plug into the input jack
with a fresh battery installed. If battery power is too low, the LED blinks dimly, every
other second.
CHANGING THE BATTERY
To change the 9-volt battery, you must remove the 4 screws on the bottom of the
Pitch Fork. Once the screws are removed, you can take off the bottom plate and
change the battery. Please do not touch the circuit board while the bottom plate is off
or you risk damaging a component. To extend battery life, disconnect the INPUT jack
when the Pitch Fork is not in use.
NOTES AND SPECIFICATIONS
• PITCH FORK has high quality buffered bypass.
• Input impedance is 2.2MΩ.
• Output impedance is 680Ω
• Current draw of the PITCH FORK is 30mA.