StewMac LIGHTCYCLE PHASOR II Manual

BASED ON THE MU-TRON PHASOR II

FIRST TIME BUILDING A PEDAL? Kick back and watch our 4-part

series where we show you the basics of pedal building. Even if

you’re a complete beginner don’t worry! We go over everything

from unboxing, to choosing the right soldering iron, to making

every connection. We also give tips on painting your pedal.

Visit: stewmac.com/pedal-build

The Lightcycle is a phase shifter based on the rare Mu-Tron Phasor II, the stripped-down second-

generation version of the original Bi-Phase pedal.

The phase pedal duplicates the original signal and manipulates it by shifting the phase of the copied

signal. These types of eects originated in the studio with the birth of automated double tracking in the

60’s. Engineers would run two tape machines at varying speeds to achieve a double tracking eect that

produced a wide range of never before heard eects.

The Phasor II had a more simple and stage friendly control layout than the Bi-Phase that was easier to

manage in live performance situations. As of this writing, the Mu-Tron Phasor II fetches no less than

$700 on the used market.

Soldering Iron #0502

Solder Wick #0504

Solder #0505

Wire Cutter #1607

Long-Nose Pliers #1610

Fine-Gauge Wire

Stripper #1606

Guitar Tech

Wrench Set #3691

or nut drivers/sockets

PC Board Holder #0500

TOOLS AND SUPPLIES

REQUIRED OR RECOMMENDED

Not pictured: #1Phillips screwdriver,

supplies to paint your pedal, clear

silicone adhesive, spray nish.

Power: Model 12253 requires a

standard 9V DC center-negative

power supply (not included) and

consumes less than 100mA.

Magnifying glass or

OptiVISOR #1685

Multimeter PM16B #3607

Our Pedal BuildingTool Set #2318 is the

perfect companion for new pedal builders

who do not already have a lot of tools and supplies.

TOOLS AND SUPPLIES

HELPFUL

Soldering Aids #0521

We know you are excited to get started building.

That said, one of the keys to a successful build, is

taking the time to get to know all of your parts. Sort all of your pedal’s

parts and check o according to the parts lists that follow. If you are not

familiar with what they do, the next section will give you a little primer.

3.9K resistor (2) #100700

2.2K resistor (2) #7376

39K resistor (1) #100704

8.2K resistor (3) #100702

560Ω resistor (2) #7356

18K resistor (1) #7396

Green Blue Black Black Brown

Gray Red Black Brown Brown

Orange White Black Red Brown

Red Red Black Brown Brown

Orange White Black Brown Brown

Brown Gray Black Red Brown

120Ω resistor (1) #101122

Brown Red Black Black Brown 4.7K resistor (16) #7359

10K resistor (3) #7362

Brown Black Black Red Brown

Yellow Purple Black Brown Brown

330Ω resistor (1) #7375

Orange Orange Black Black Brown

PARTS LIST

Note: While electrical

properties remain the same,

the appearance of parts may vary

based on availability. If you are ever

unsure, please contact us via the

information on the back of this manual.

1N5817 rectier diode (1)

#7522

68K resistor (3) #7380

220K resistor (7) #7381

47K resistor (2) #7369

390K resistor (2) #7419

1N4148 rectier diode (2)

#7470

Orange White Black Orange Brown

Yellow Purple Black Red Brown

Red Red Black Orange Brown

Blue Gray Black Red Brown

820pF capacitor (1)

#100722

47pF capacitor (1)

#100720

1µF capacitor (1)

#7314

10µF capacitor (3)

#7310

10uF

220µF capacitor (1)

#101930

220uF

1uF

PARTS LIST CONT

1N5817 rectier diode (1)

#7522

68K resistor (3) #7380

220K resistor (7) #7381

47K resistor (2) #7369

390K resistor (2) #7419

1N4148 rectier diode (2)

#7470

Orange Gray Black Orange Brown

Brown Purple Black Red Brown

Red Red Black Orange Brown

Blue Gray Black Red Brown

1µF capacitor (1)

#7314

1uF

10µF capacitor (3)

#7310

100uF

220µF capacitor (1)

#100727

220uF

820pF capacitor (1)

#100722

47pF capacitor (1)

#100720

KE - 10720 LDR (6)

#100778

2N4401 transistor (1)

#100735

470nF capacitor (2)

#101932

1nF capacitor (1)

#101931

3.3nF capacitor (1)

#7303

3n3K

MMK

BF6

63-

100nF capacitor (2)

#7304

.1J63

6.8nF capacitor (6)

#100723

682J100

1K trim pot (1)

#100737

10K trim pot (1)

#7570

KE - 10720 LDR (6)

#100778

WMA

0,47

100-

470nK

WIMA

1000/100-

2N4401 transistor (1)

#100735

2N4

401

102 1H

103 1M

1/4" mono jack (2)

#4652

470nF capacitor (2)

#101932

1nF capacitor (1)

#101931

3.3nF capacitor (1)

#7303

3n3K

MMK

BF6

63-

100nF capacitor (2)

#7304

.1J63

6.8nF capacitor (6)

#100723

682J100

1K trim pot (1)

#100737

10K trim pot (1)

#7570

KE - 10720 LDR (6)

#100778

WMA

0,47

100-

470nK

WIMA

1000/100-

2N4401 transistor (1)

#100735

2N4

401

102 1H

103 1M

1/4" mono jack (2)

#4652

PARTS LIST CONT

3PDT latching footswitch (1)

#1611

Adhesive foam tape squares (4)

#7560

2.1mm DC power connector (1)

#7468

White LED (1)

#7422

Yellow LED (1)

#7423

5mm LED mounting bezel (1)

#7432

B10K linear taper pot (1)

#7532

A10K audio taper pot (1)

#101646

A25K audio taper pot (1)

#102230

TL072

TC1044 SCPA Charge pump (1)

#100732

Integrated circuit socket (7)

#7484

TL072 1C op-amp (6)

#7444

TC1044

PARTS LIST CONT

StickerSheet (1)

Circuit Board [PCB] (1)

Breakout Board (1)

Pre-drilled enclosure (1)

IN GND SW OUT

24" of lead wire (1)

#5960

Control knobs (3)

#7501

PARTS LIST CONT

1. To minimize redoing steps, make

sure you have a solid idea of the

look and feel you’re going for.

2. Lightly sand housing with a

P240 grit sandpaper and wipe

clean any debris.

3. Cover the holes from the

inside with masking tape.

4. On a large piece of cardboard,

elevate the housing top and

bottom on a couple of small blocks

of wood.

5. With long, slow strokes, spray

one light coat of primer or primer/

paint on top and bottom. Allow

45 minutes of drying time between

next two to three coats.

6. If you’re using primer followed

by paint method, paint 3 coats

with 45 minutes between coats.

7. Now, add your Lightcycle

sticker and any other

desired decoration (paint

pens, acrylic paint, Sharpie

etc.). Allow drying time.

8. Add 3 coats of clear coat glaze

with 45 minutes between

coats. Wait at least 2 hours

before adding parts.

Give your pedal a custom paint job by painting and adding the stickers provided in this kit

(or custom decals that you can create on your own). Doing this pre-build is not only fun,

but it’s much easier than disassembling the pedal to paint it once you put it together. Don’t

forget to order quality primer and lacquers from stewmac.com.

PAINTING

YOUR PEDAL

HOUSING

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