electro-harmonix Dual Static Expression Knobs User Guide
- June 7, 2024
- electro-harmonix
Table of Contents
electro-harmonix Dual Static Expression Knobs
Congratulations on your purchase of the Electro-Harmonix Cntl Knob! The Cntl Knob is a compact, easy-to-use utility pedal providing remote static knob control for devices with expression control jacks. With the Cntl Knob, the user can set two preset values, representing two positions of a traditional expression pedal. Use the Cntl Knob’s onboard footswitch to toggle between the two knob settings.
It works great with any device featuring an expression pedal input, including the Electro-Harmonix Grand Canyon® Delay and Looper, Oceans 12® Dual Stereo Reverb, Superego+™ Synth Engine, Super Pulsar™ Tremolo and many other pedals and devices made by Electro-Harmonix and other manufacturers.
USING THE CNTL KNOB
Connect the supplied Tip-Ring-Sleeve (TRS) cable to the Cntl Knob’s jack and
to the expression jack on the device you want to control. We recommend the
device be powered down while making the connection. Connect an optional 9VDC,
center-negative power supply to the 9V power jack at the top of the Cntl Knob
for LED indication. 9V power only lights the Cntl Knob’s LEDs. Power is not
required to use the expression knobs.
The Cntl Knob has 2 Expression knobs, 1 footswitch and one pushbutton for TRS
polarity. They work as follows:
EXP 1 Knob
The position of this knob determines the first expression setting. The fully
counter-clockwise position corresponds to the heel position on a standard
expression pedal while the fully clockwise position corresponds to the toe
position. The EXP 1 knob setting is active on the EXP OUT jack when the LED
located below the EXP 1 knob is lit.
EXP 2 Knob
The position of this knob determines the second expression setting. The fully
counter-clockwise position corresponds to the heel position on a standard
expression pedal while the fully clockwise position corresponds to the toe
position. The EXP 2 knob setting is active on the EXP OUT jack when the LED
located below the EXP 2 knob is lit.
EXP OUT Jack
This jack outputs the expression value set by the currently active knob. A TRS
(tip-ring-sleeve) cable is required for this jack. Please do not connect a TS
(tip-sleeve) cable to the EXP OUT jack; it will not work and may cause damage
to your equipment.
TRS +/- Button
When this button is in the inward position, the polarity of the EXP OUT jack
is Ring-to-Wiper. When this button is in the outward position, the polarity of
EXP OUT is Tip to-Wiper.
- This button must be set to comply with the expression polarity of the device that is being controlled. Please check the user manual of the device for the required expression polarity.
- For all EHX products, such as the Deluxe Big Muff Pi®, Deluxe Memory Boy™ Analog Delay and Pitchfork® Pitch Shifter, this toggle should be in the outward position (Tip-to-Wiper polarity).
Footswitch & LEDs
A press on the footswitch toggles the active expression setting on EXP OUT
between EXP 1 and EXP 2. If power is applied, the LEDs below each knob light
to indicate the currently active knob.
9V Power Jack
An optional 9VDC, center-negative power supply can be inserted to provide
power to the LEDs at this jack. The current draw is 5mA. The maximum
acceptable DC voltage for this power supply is 18VDC. The Cntl Knob does not
take batteries.
Please note: the exact function of the Cntl Knob expression setting
depends on the device to which it is connected. Please refer to the device’s
user manual for more information on the functions assigned to the expression
input.
WARRANTY INFORMATION
Please register online at http://www.ehx.com/product-
registration or complete and return
the enclosed warranty card within 10 days of purchase. Electro-Harmonix will
repair or replace, at its discretion, a product that fails to operate due to
defects in materials or workmanship for a period of one year from date of
purchase. This applies only to original purchasers who have bought their
product from an authorized Electro-Harmonix retailer. Repaired or replaced
units will then be warranted for the unexpired portion of the original
warranty term.
If you should need to return your unit for service within the warranty period,
please contact the appropriate office listed below. Customers outside the
regions listed below, please contact EHX Customer Service for information on
warranty repairs at info@ehx.com or
+1-718-937-8300. USA and Canadian
customers: please obtain a Return Authorization Number (RA#) from EHX Customer
Service before returning your product. Include ̶ with your returned unit ̶ a
written description of the problem as well as your name, address, telephone
number, e-mail address, RA# and a copy of your receipt clearly showing the
purchase date.
United States & Canada
Europe
EHX CUSTOMER SERVICE JOHN WILLIAMS
ELECTRO-HARMONIX ELECTRO-
HARMONIXUK
c/o NEW SENSOR CORP. 13
CWMDONKIN TERRACE
55-01 2ND STREET
SWANSEASA2 0RQ
LONG ISLAND CITY, NY11101 UNITED KINGDOM
Tel:718-937-8300
Tel: +44 179 247 3258
Email:info@ehx.com
Email:electroharmonixuk@virginmedia.com
To hear demos of all EHX pedals visit us on the web at
www.ehx.com Email us at
info@ehx.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>