Electro-Harmonix Triangle Big Muff Pi Manual, Operating Instructions

 
 
 
Triangle Big Muff Pi 
 
Congratulations on your purchase of the Triangle Big Muff. It’s a faithful re-creation 
of the original and dripping with vintage Electro-Harmonix DNA and tone. Dubbed the 
Triangle Big Muff because of the layout of its Volume, Sustain and Tone controls, this 
is the one that started it all circa 1969. 
 
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 Triangle 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 122kΩ. 
 
OUT Jack – Connect the Triangle Big Muff’s ¼” OUT jack to the input of your 
amplifier or another effects pedal. When the Triangle Big Muff is in bypass mode, the 
OUT jack is connected directly to the IN jack. The output impedance is nominally 
25kΩ. 
 
POWER 
 
Powering the Triangle Big Muff Pi 
The Triangle 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 2.2mA at 9VDC.  
 
Please Note: Using the wrong adapter or a plug with the wrong polarity 
may damage your Triangle Muff Pi and void the warranty. 
 
 
 
 
Changing the Battery 
To change the 9V battery, remove the 4 screws on the bottom of the Triangle 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 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 
[email protected] 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-HARMONIX UK 
  c/o NEW SENSOR CORP.  13 CWMDONKIN TERRACE 
  55-01 2ND STREET  SWANSEA SA2 0RQ 
  LONG ISLAND CITY, NY 11101  UNITED KINGDOM 
 
  Tel: 718-937-8300  Tel: +44 179 247 3258 
 Email: [email protected]  Email:
 [email protected] 
 
 
 
 
The CE logo indicates that this product has been tested and shown to conform with all 
applicable European Conformity directives. 
 

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