SA243
Vertigo Tremolo User’s Guide
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In the case of an expression pedal with a TRRS plug, like Source Audio’s expression pedals, the tip
connection is power, the first ring is the X axis expression signal, the second ring is the Y axis
expression signal, and the sleeve connection is ground.
Third party expression pedals can be used as well, as long as they have a TRS (Tip Ring Sleeve) plug
with power on the tip, expression (the wiper of the potentiometer) on the ring, and ground on the
sleeve, as seen in the diagram below.
Expression pedals with TS (Tip Sleeve) plugs will not work correctly with the Vertigo.
The resistance of the expression pedal does not matter. The Vertigo will automatically adjust itself to
the range of the expression pedal when it is configured.
Most expression pedals use a ¼” plug, but the Vertigo’s control port is 3.5 mm. To make the
connection, a simple TRS plug converter (1/4” to 3.5 mm) can be used.
Note that although the Control Port expects a 4-contact TRRS plug, most 3
rd
party expression pedals
use a 3-contact TRS plug. This is OK – using a simple 3-contact TRS plug converter, the expression
pedal’s output will be connected to the Vertigo’s X expression input.
Configuring the Expression Pedal
It is easier than ever to set up expression control using the Vertigo’s new calibration and mapping
method. When the expression pedal is connected to the Vertigo, follow these simple steps to
calibrate it and map it to control different effect parameters.
1.
Press the Control Input button to turn on Control Input mode. The Control LED should be lit
green.
2.
Press and hold the Control Input button until the Control LED begins to blink slowly
(approximately one blink per second).
Ground
Power
Y Exp
X Exp
Ground
Power
Expression