electro-harmonix Ram’s Head Big Muff Pi User Manual
- June 6, 2024
- electro-harmonix
Table of Contents
Ram’s Head Big Muff Pi
Congratulations on your purchase of the Ram’s Head Big Muff, a faithful reproduction of the highly coveted 1973 Violet Ram’s Head Big Muff heard on countless classic recordings and famous guitar solos. It delivers the unmistakable, articulate string separation and exceptional sustain that’s made the V2 Big Muff so sought after. Now with a few choice updates for convenience including true bypass switching, an LED to indicate effect status and the option of being powered by a 9-volt AC adapter.
OPERATING INSTRUCTIONS
VOLUME Control – Sets the output level
TONE Control – Provides a range of sounds from high treble to deep bass.
As you turn the knob clockwise the treble increases and bass decreases.
SUSTAIN Control – Adjusts the amount of sustain and distortion.
Footswitch & Status LED – Use the footswitch to toggle between effect
and bypass. The Ram’s Head Big Muff is active when the LED is lit. When the
LED is off, the pedal is in true bypass mode.
IN Jack – Plug the output of your instrument or another effects pedal
into the ¼” input jack. The input impedance presented at this jack is 117k.
OUT Jack – Connect the Ram’s Head Big Muff’s ¼” OUT jack to the input of
your amplifier or another effects pedal. When the Ram’s Head Big Muff is in
bypass mode, the OUT jack is connected directly to the IN jack. The output
impedance is nominally 25k.
POWER
Powering the Ram’s Head Big Muff Pi The Ram’s Head Big Muff Pi may be powered
from a 9V battery or an optional 9VDC AC Adapter such as the EHX9.6DC-200 or
any Boss® or Ibanez® style AC adapters capable of delivering at least 30mA.
Plug the output of the adapter into the 9V power jack located at the top of
the pedal. The battery may be left in or taken out when using an AC Adapter.
The current draw is approximately 2.0mA at 9VDC.
Please Note: Using the wrong adapter or a plug with the wrong polarity may
damage your Ram’s Head Big Muff Pi and void the warranty.
Changing the Battery
To change the 9V battery, remove the 4 screws on the bottom of the Ram’s Head
Big Muff Pi. Take off the bottom plate and change the battery. Avoid touching
the circuit
board while the bottom plate is off. Replace the bottom plate and screws.
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 the 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 R eturn 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
EHX CUSTOMER SERVICE
ELECTRO-HARMONIX
c/o NEW SENSOR CORP.
47-50 33RD STREET LONG ISLAND CITY, NY 11101
Tel: 718-937-8300
Email: info@ehx.com
Europe
JOHN WILLIAMS
ELECTRO-HARMONIX UK
13 CWMDONKIN TERRACE
SWANSEA SA2 0RQ
UNITED KINGDOM
Tel: +44 179 247 3258
Email:
electroharmonixuk@virginmedia.com
The CE logo indicates that this product has been tested and shown to conform
with all applicable European Conformity directives.