User Manual

- 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 [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]
FCC COMPLIANCE
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 that 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.
• Consult the dealer or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user's authority to operate the
equipment under FCC rules.
Deluxe Big Muff Pi
Congratulations! You have just purchased the ultimate harmonic distortion-sustain device developed to
date for the electric guitar player: the Deluxe Big Muff Pi! We started with our beloved NYC Big Muff Pi
and carefully added select new features to create a versatile distortion that is extremely musical sounding.
Please review this manual to learn the unique potential of the Deluxe Big Muff Pi.
Features Include:
• Big Muff Knob Layout – familiar Sustain, Tone and Volume controls
• MIDS EQ – fully parametric MIDS EQ includes variable frequency sweep, boost or cut level
control and switchable Q or bandwidth amount
• Footswitch for MIDS EQ –turn on the MIDS EQ circuit with the stomp of your foot
• Gate – remove unwanted hum
• Attack –preserves pick attack with an enhanced version of your dry signal
• Bass Boost – switchable bass boost
• Expression Pedal Input – sweep the frequency of the MIDS EQ with your foot
• True Bypass
The Deluxe Big Muff Pi feature set is a culmination of ideas Mike Matthews has always wanted to see in
a Big Muff plus suggestions from many friends of Electro-Harmonix. The MIDS EQ allows tonal shaping
of the Big Muff distortion like never seen before, the GATE function lends itself to playing the Big Muff
in new ways providing blasts of fuzz when you play and silence when you don’t, the ATTACK control
adds definition to chords and riffs without getting in the way of the Big Muff’s original tone, and BASS
BOOST brings back some low end when TONE is turned up to its treble settings.
-CONTROLS -
VOLUME Knob – Works as a master volume control for the entire pedal.
TONE Knob – Provides a range of sounds from high treble to deep bass. As you turn the TONE knob
clockwise, treble increases and bass decreases.
SUSTAIN Knob – As in the original Big Muff Pi, adjusts the amount of sustain and distortion.
BASS BOOST/NORMAL Switch – When set to NORMAL, the Big Muff circuit is identical to our NYC
Big Muff that we currently manufacture. Flip the switch up to BASS BOOST and the volume level of bass
frequencies through the Big Muff circuit increases. Although the BASS BOOST function can be subtle it
is most useful when TONE is set above the center, 12 o’clock position.
ATTACK Knob – Is a volume control for the Attack effect. As you turn the ATTACK knob clockwise
the Attack volume increases. Turn ATTACK all the way down (fully counter-clockwise) to turn Attack
off.
The Attack signal path runs in parallel to the Big Muff’s circuit. The function of the Attack circuit is to
enhance the sound of your picking by applying 2 carefully chosen bandpass filters to the input signal
followed by a volume expander that ensures your pick attack is louder than the sustained portion of the
note. The Attack signal is not clean; it is usually very gritty but not nearly as distorted as the Big Muff
circuit.
GATE Knob – Turning GATE clockwise raises the Gate threshold requiring greater input amplitude to
open the noise gate, allowing your notes to be heard and your instrument to pass through. Turn the GATE
knob down all the way, to fully counter-clockwise, to disable the noise gate.