StewMac NYC BIG MUFF PI Instructions Manual Download | Manualshive

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NYC BIG MUFF PI

TONE BYPASS MOD

INSTRUCTIONS

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Summary of Contents for NYC BIG MUFF PI

Page 1: ...NYCBIGMUFFPI TONEBYPASSMOD INSTRUCTIONS ...

Page 2: ...s switch was a feature on the 1970 s Big Muffs but was not included in the 2000 s reissues of the pedal This mod is only intended for the big box NYC Big Muff Pi pedals released in the 2000 s If you run into issues with this modification a StewMac tech advisor is a click or call away stewmac com contactus or 1 800 848 2273 Big Muff is a registered trademark of New Sensor Corp ...

Page 3: ...der 0505 Solder Sucker 0503 Solder Wick 0504 PARTS LIST 1 Black and white pushback wire 2 1 8 heat shrink 2 length 1 Mini toggle switch 1 NYC Big Muff Pi Tone Bypass Mod instructions Fine gauge Wire Stripper 1606 Wire Cutter 1607 Solomon SR 965 Soldering Station 0502 TOOLS YOU LL NEED ...

Page 4: ... the wire sheathing from the end of the wire you intend to solder 2 Twist the wire strands of the exposed wire firmly Don t twist solid core wires 3 Dab a tiny amount of solder onto the end of your soldering iron 4 Touch the soldering iron with its dab of solder to the exposed wire closest to the sheathing This will help to hold the iron in place as it heats the exposed wire Wire will heat within ...

Page 5: ...ts are messy and more likely to fail SOLDERING 1 Insert tinned wire through lug hole before soldering and bend to secure 2 Melt a small amount of solder onto the tip of the iron tinning the iron 3 Hold the tip against the connection until the connection reaches soldering temperature This should take just a few seconds 4 Feed solder to the connection not to the iron Stop feeding solder once the lug...

Page 6: ...sucker and remove the soldering iron from the joint Inspect the solder joint and repeat the process until all of the solder is removed 2 USING SOLDER WICK Solder wick is a flat braided wire that can be used to remove solder from a joint Simply place the wick on the solder joint and press your soldering iron against the wick heating the joint through the wick The solder will liquefy and absorb into...

Page 7: ...cuit board on any of the wires If your pedal has a glued LED light do not remove it Pull the knobs off of the front of the pedal unscrew the mounting nuts for the potentiometers and the switch and unscrew the mounting nuts for the instrument and power jacks on the top panel Set all of the components to the side for now AMPLIFIER VOLUME TONE SUSTAIN 1 1 ...

Page 8: ...tween the tone and sustain holes and just above the black line pictured Measure the location of the hole you will drill and mark that location on the underside of the housing Drill the hole from the underside of the housing to avoid bending the housing while drilling AMPLIFIER VOLUME TONE SUSTAIN 2 2 ...

Page 9: ...solder lug on the switch and solder them 4 4 INSTALL JUMPERS ON THE SWITCH Cut two 4 white jumpers strip roughly 1 4 of insulation from the end of the wires and tin the freshly exposed wire Wrap the wires through the eyelet of one of the outside solder lugs on the switch and solder them Even though it s called pushback wire you must strip the insulation to make a solid solder connection 3 3 ...

Page 10: ...1 Heat shrink is used to insulate an electrical connection like a solder joint to prevent the connection from shorting 2 Slide the heat shrink all the way up to the switch completely covering the solder joint and solder lug 3 Wave the flame from a lighter or the tip of a soldering iron near the positioned heat shrink until the wrap constricts to a firm hold Allow heat shrink to cool ...

Page 11: ... is printed in large white letters along the bottom of the board The last letter in that code A B C D or E is the version you have Now locate capacitor C8 It will be either yellow or green On version A or B C8 will be located between the volume and tone pots On this version desolder and lift the leg of C8 that is closest to the edge of the board On version C D or E C8 is located between the tone a...

Page 12: ...C8 8 8 ATTACH BLACK WIRE TO C8 Solder the free end of the same black wire to the lifted leg of C8 ...

Page 13: ...ink the insulation to the joint C8 9 9 FIND RESISTOR R5 If your Big Muff is version A or B it will be located between the tone and sustain pots On version C D or E it will be located just below capacitor C8 For all versions locate the leg closest to the sustain pot and desolder and lift it C8 R5 10 10 ...

Page 14: ...he second black wire that you just soldered to the new switch Solder the free end of the same black wire to the lifted leg of R5 R5 11 11 HEAT SHRINK SOLDER JOINT Slide the heat shrink over the new solder joint and use a heat source to shrink the insulation to the joint C8 R5 12 12 ...

Page 15: ...to its hole first and then reinstall the rest of the components back in to the pedal housing Re attach the back panel with the four mounting screws Plug in your guitar and an amp and take your Big Muff for a test drive When the tone bypass switch is engaged the pedal should be noticeably louder If you experience intermittent signal or other irregularities pull the back panel off the pedal again an...

Page 16: ...attempting these modifications please don t hesitate to reach out to our Tech Support Team They are available by email at service stewmac com and by phone M F 9 00AM 5 00PM ET at 1 800 848 2273 DISCLAIMER Performing the modifications outlined in these instructions will void any warranty on your pedal StewMac is not responsible for any damage caused by attempting these modifications ...

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