Electro-Harmonix Q-Tron (Original) q-tron

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 Electro­Harmonix 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 [e-mail] or [phone]. 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, and RA#; and a copy of your receipt clearly showing the purchase date.

United States & Canada

EHX CUSTOMER SERVICE
ELECTRO-HARMONIX
c/o NEW SENSOR CORP.
55-01 2ND STREET
LONG ISLAND CITY, NY 11101
Tel: [phone]
Email: [e-mail]

Europe

JOHN WILLIAMS
ELECTRO-HARMONIX UK
13 CWMDONKIN TERRACE
SWANSEA SA2 0RQ
UNITED KINGDOM
Tel: [phone]
Email: [e-mail]

This warranty gives a purchaser specific legal rights. A purchaser may have even greater rights depending
upon the laws of the jurisdiction within which the product was purchased.

To hear demos on all EHX pedals visit us on the web at www.ehx.com
Email us at [e-mail]

Note:

This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee t hat interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

•

Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.

•

Modifications not expressly approved by the manufacturer could void the user's authority to operate the
equipment under FCC rules.

Consult the dealer or an experienced radio/TV technician for help.

- WARRANTY INFORMATION -

FCC COMPLIANCE

Q-TRON

Envelope Controlled Filter

-OPERATING INSTRUCTIONS-

Congratulations on your purchase of the
purchased a very powerful tool for musical expression.
Please take a few minutes to familiarize yourself with the
work.

Envelope controlled filters are a unique type of sound modifier where the intensity of the
effect is controlled by the user’s playing dynamics.

The volume (also know as the envelope) of an incoming audio signal is used to control a
swept filter. As the volume increases or decreases so does the pitch of the filter.

Drive Switch

(Up/Down) – Selects direction of filter sweep

Range Switch

(HI/Lo) – Emphasizes vowel-like sound in low position and overtones in high

position.

Gain Control

(0-11) – Functions as both a volume control and a filter sensitivity control in
boost mode. In Normal mode the Gain control acts as a filter sensitivity control and has no
effect on the unit’s output volume.

Boost Switch

(Normal/Boost) – Normal mode disengages internal pre-amp, Boost mode

activates it. Also determines function of Gain control (see above).

Peak Control

(0-11) – Determines frequency peak of filter. This control will create a more

dramatic effect when turned clockwise.

Mode Switch

(LP, BP, HP, MIX) – Determines what frequency range the filter will sweep in.
Emphasizes lows in Low Pass, midrange in Band Pass, treble in High Pass. Mix mode
combines BP with dry instrument signal.

Bypass Switch

Lastly, the

(in/out) – Disengages effect.

Q-Tron’s

effect can be controlled by the user’s playing dynamics. A strong attack
will yield a more dramatic effect, while softer playing will yield more subtle effects or none at
all.

Q-Tron

-CONTROLS-

envelope controlled filter! You have

Q-Tron’s

controls and how they

-OPERATION-

-OPTIONS FOR USE-

Your unit comes equipped with a 24-volt/100mA tip positive, external power adapter
(European models come equipped with a 24v DC/30mA tip positive adapter). Use only the
power adapter supplied. Using the wrong adapter can cause serious bodily injury. Using the
wrong adapter may also damage your unit and will void the warranty.

Make sure all controls are set at minimum. Connect your instrument to the input jack and your
amplifier to the effect out jack. The unit’s power LED should be lit.

Set the Q-Tron’s controls to the following:

Drive Switch: Up
Range Switch: Low
Mode Switch: BP
Peak Control: Maximum
Boost Switch: Normal
Gain Control: See Below

Vary the Gain control until the Overload Indicator LED lights on most of the notes you play. If
no effect is noticeable, depress the Bypass switch to engage the effect. With this setting the
user should be able to approximate the sound of a conventional wah wah pedal. Experiment
with this setting to see how the

Adjusting the Gain and Peak controls will vary the amount and intensity of the effect. For
tonal variations adjust the Range, Mode, and Drive controls.

To attain an effect similar to an original Mutron III, set the Q-Tron’s controls to the following:

Drive Switch: Down
Range Switch: Low
Mode Switch: BP
Peak Control: Maximum
Boost Switch: Boost
Gain Control: See Below

Vary the Gain control until the Overload Indicator LED lights on only the loudest notes you
play. Increasing the Gain will saturate the filter, yielding those famous, “chewy” Mutron-like
sounds. Adjusting the Peak control will vary the intensity of the effect. For tonal variations,
adjust the Range, Mode, and Drive controls.

Q-Tron

reacts to playing dynamics.

Due to the
electronic instruments. Here are some setting tips for use with different instrument types:

Range Control

guitar, brass, and wind use. Both ranges work well with keyboards.

Mix Mode

Drive Switch

keyboards.

The
interesting combinations:

Q-Tron

The use of distortion will dramatically increase the intensity of the
also place the Distortion before the
response range of the effect.

Q-Tron

Down Drive position.

Q-Tron

Make sure to use an octave divider which maintains the natural envelope of the signal. This
combination will yield sounds similar to an analog synthesizer.

As always, experiment to achieve your own unique sound. When used properly, the
will provide a lifetime of playing pleasure!

Q-Tron’s

: Works especially well with bass guitar (May require higher peak settings).

Q-Tron

and

into another

and octave divider: Place the octave divider before the

extended frequency response, it can be used with a wide variety of

: Lo range is the best for rhythm guitar and bass. Hi range is best for lead

: Down Drive works well with bass guitar. Up Drive is best with guitar and

can also be used in conjunction with other effect pedals. Here are some

Big Muff

distortion: Place the distortion after the

Q-tron,

but his combination tends to flatten the dynamic

Q-Tron

: Try this with one unit in the Up Drive position and one in the

Q-Tron

in the signal chain.

Q-Tron’s

Q-Tron

effect. You can

in the signal chain.

Q-Tron