User Manual

CONNECTIONS

INPUT Jack – This ¼” jack is the audio input to the Grand Canyon. The

input impedance is 2M.

L OUT Jack – Use this output for a mono setup. In a stereo setup this is

your left output. The output impedance is 550.

R OUT Jack – This is the right output jack in a stereo setup. The output

impedance is 550.

FSW Jack – Connect an external momentary footswitch to this ¼” jack.

The external footswitch may be either a single footswitch (TS plug), a dual

footswitch (TRS plug), or a triple footswitch (TRS plug) such as the

DigiTech

FS3X. The external footswitches must be momentary and

normally open so that when the switch is pressed down a connection is

made between the sleeve and either the tip, ring or both. See page 27 for

a description of all functions available on the external footswitches.

EXP Jack and Expression/CV Specifications – Connect an expression

pedal with a TRS plug to this jack to allow external control over any of the

Grand Canyon’s knobs, or use it like a volume pedal on the dry signal

before it hits the delay effects. See page 28 for a description on how to

set up and control the Grand Canyon with an external expression pedal.

The polarity of the expression pedal’s plug must have the Sleeve

connected to the heel position (usually GND), Ring connected to the toe

position and the Tip connected to the wiper. The nominal expression pedal

impedance is 10kΩ though most other values will work fine. Please do not

go below 6kΩ on your expression pedal’s potentiometer impedance. Some

suggested Expression Pedals: EHX Expression Pedal, M-Audio

EX-P,

Moog

EP-2 and EP-3, Roland

EV-5 or Boss

FV-500L. Additionally, the

EXP IN jack can be connected to a CV source using a TS plug; the

acceptable control voltage range is 0V to 5V.

9V Power Jack – Plug the output of the Grand Canyon’s supplied

EHX9.6DC 200mA AC adapter to the 9V power jack located at the top of

the pedal. The Grand Canyon requires 150mA at 9VDC with a center-

negative plug. Do not exceed 10.5VDC on the power jack.

Note: Expect

unreliable behavior if the power supply rating is less than 150mA.