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LIQUID-FOOT PRO SERIES MIDI FOOT CONTROLLER
USING SWITCH PEDALS IN EXPRESSION PORT 1
The Liquid-Foot expression pedal ports were designed for single and dual POT expression pedals. The
expression pedal ports will allow themselves to be configured for Latch (STOMP), MOMENTARY and
SINGLE-SHOT capabilities. When using an expression pedal with these features- pressing the expression
pedal fully up (HEEL) is the equivalent of Pressing a foot pedal ON. Moving the expression pedal towards
down (toe) will be considered shutting the pedel off. It will be more intuitive to use the last three modes
with an actual switch pedal.
In almost all cases (depending on specific switch impedance issues), expression port 1 will work with
typical off the shelf switch pedals. One problem… Switch pedals have a MONO ¼ “ TS adaptor on the
end. Unfortunately, this is NOT compatible with the expression ports. To utilize switch pedals that only
support TS MONO, two options are possible. First, you can cut the connector off the end of the switch
and replace the TS connector with a stereo TRS ¼ “ connector. The circuit diagram is TIP for one wire,
Sleeve for the other. DO NOT connect the ring (middle) contact when using a pedal switch. Damage will
occur to the Liquid-Foot.
Another alternative is to buy an off-the-shelf Mixer INSERT “Y” cable. An example is a HOSA YPP-117.
See below:
SOLUTION #1 for Switch Pedals: PREFERRED METHOD
Wiring a standard off the shelf switch pedal (the switch type must be momentary and should be a
double pole type. Per the wiring diagram below, while the switch is not pressed (NO)- the wiring should
be TIP/RING, and when the user is pressing the momentary switch, the connection should be
TIP/SLEEVE.
PREFERRED WIRING:
THIS WILL WORK ON ALL 4 EXPRESSION PEDAL PORTS
