StewMac Monarch Manuel utilisateur

Sheet #i-2205 Updated 5/18

CLASSIC PEDAL KIT

Monarch

StewMac

Assembly

Instructions

The Monarch Overdrive is an all

discrete, FET-based dirt machine.

It’s designed around the input stage

of a vintage amp but congured to

produce higher gains that sound

very open and free of unnatural

compression. The Monarch gives big

bottom end with a snappy, bright top at all gain ranges with

some careful tuning of the treble and bass controls. The

treble and bass controls function as frequency boosters,

not the traditional roll o lters in most overdrives. They are

located in the preamp section and have a large impact on

the over all tone, nature and distortion characteristics. If you

are looking for an overdrive for big fat chords with excellent

low end retention, this is it!

An EarthQuaker Devices original, the Monarch Overdrive

has been out of production for some time, but now you can

build your own!

IN COLLABORATION WITH

Easy instructions!

Clear pictures show where

each part goes.

RARE / VINTAGE / HARD TO GET

WHEN YOU CAN’T BUY IT BUILD IT

EarthQuakerDevices™

Kit case is unpainted

Tips for soldering

The solder joints you’ll make on the

circuit board are very small, and too

much heat can damage the board.

The idea is to make joints quickly,

without scorching the eyelets.

Hold components in place for soldering by threading the

leads through the board and bending them apart on the

reverse side.

Make your solder joints on the reverse side. Insert the tip into

the eyelet and let it heat for 4-5 seconds before touching it

with solder. This heats the contact enough for the solder to

ow nicely without damage. You don’t need much solder,

just enough to ll the eyelet. After soldering, trim away the

excess lead wire.

Give your pedal a custom paint job!

Any paint sold for use on metal will work well on the kit case.

Spray paints like Rustoleum® or Krylon® are a durable nish.

You might want to paint the case before building the kit,

so you won’t need to take the parts back out for painting.

A way to add custom graphics is to print them from your

computer onto waterslide decal paper. If you use decals,

protect them from scratches by spraying clear topcoats

over them.

Tools and supplies

Required: Soldering iron with ne point tip

Solder

Wire cutter/stripper

3/8" nut driver or socket

1/2" nut driver or socket

10mm nut driver or socket

14mm wrench

#1 Phillips screwdriver

Also helpful: Clear silicone adhesive

Circuit card holder

Magnifying glass or OptiVISOR

StewMac Soldering Aids

Power: This pedal requires a standard 9V DC

center-negative power supply or 9V battery

(neither included) and consumes less than

100mA.

Parts list

Resistor values are indicated by colored bands, read from left

to right. The rst color in the code is usually the one painted

closest to a lead wire. When a gold or silver band is present,

it’s always one of the last colors in the code. A magnier is

a big help in reading these codes.

Save time: sort the

components by type

before you art!

.47µF capacitor (1) #7336

474J

100V

474J 100V

5mm LED mounting bezel (1) #7432

470pF capacitor (1) #7328

parts: i-2205 Monarch Overdrive

1KΩ resistor (1) #7357

Brown Black Black Brown Brown

10µF capacitors (2) #7338

100µF capacitor (1) #7339

220pF capacitor (1) #7327

221J

100V

221J 100V

471J

100V

471J 100V

.001µF capacitors (2) #7329

102J

100V

102J 100V

5mm white LED (1) #7422

BS170 transistor (1) #7485

2N5457 transistors (3) #7486

A1MΩ audio taper pots (3) #7459

B100KΩ linear taper pot (1) #7453

24" of lead wire (1) #5960

Adhesive foam tape squares (4) #7560

PT2399

1µF capacitors (2) #7337

Brown Black Black Black Brown

100Ω resistor (1) #7352

1N4001 rectier diode (1) #7404

10uF

1uF

100uF

100pF capacitors (2) #7326

101J

100V

101J 100V

.022µF capacitor (1) #7332

223J

100V

223J 100V

.0022µF capacitor (1) #7330

222J

100V

222J 100V

.01µF capacitors (2) #7331

103J

100V BS

170 2N

5457

103J 100V

.0047µF capacitor (1) #7321

.0047J

100n

.0047J 100n

Stereo Mono

3PDT latching footswitch (1) #1611

Metal case with 4 screws (1) #7601

Circuit board (1)

(Not pictured)

1/4" stereo jack (1) #4653

1/4" mono jack (1) #4652

2.1mm DC power connector (1) #7467

9V battery clip (1) #1222

Protective cap (1) #1227

Control knobs (4) #7501

Brown Black Black Yellow Brown

1MΩ resistors (3) #7367

Brown Black Black Red Brown

10KΩ resistors (4) #7362

Brown Black Black Orange Brown

100KΩ resistor (3) #7365

Red Red Black Red Brown

22KΩ resistors (2) #7379

Blue Gray Black Red Brown

68KΩ resistor (1) #7380

Yellow Purple Black Orange Brown

470KΩ resistor (1) #7382

Blue Gold

Brown Black

10M resistors (2) #7383

Orange Orange Black Black Brown

330Ω resistor (1) #7375

.47µF capacitor (1) #7336

474J

100V

474J 100V

5mm LED mounting bezel (1) #7432

470pF capacitor (1) #7328

parts: i-2205 Monarch Overdrive

1KΩ resistor (1) #7357

Brown Black Black Brown Brown

10µF capacitors (2) #7338

100µF capacitor (1) #7339

220pF capacitor (1) #7327

221J

100V

221J 100V

471J

100V

471J 100V

.001µF capacitors (2) #7329

102J

100V

102J 100V

5mm white LED (1) #7422

BS170 transistor (1) #7485

2N5457 transistors (3) #7486

A1MΩ audio taper pots (3) #7459

B100KΩ linear taper pot (1) #7453

24" of lead wire (1) #5960

Adhesive foam tape squares (4) #7560

PT2399

1µF capacitors (2) #7337

Brown Black Black Black Brown

100Ω resistor (1) #7352

1N4001 rectier diode (1) #7404

10uF

1uF

100uF

100pF capacitors (2) #7326

101J

100V

101J 100V

.022µF capacitor (1) #7332

223J

100V

223J 100V

.0022µF capacitor (1) #7330

222J

100V

222J 100V

.01µF capacitors (2) #7331

103J

100V BS

170 2N

5457

103J 100V

.0047µF capacitor (1) #7321

.0047J

100n

.0047J 100n

Stereo Mono

3PDT latching footswitch (1) #1611

Metal case with 4 screws (1) #7601

Circuit board (1)

(Not pictured)

1/4" stereo jack (1) #4653

1/4" mono jack (1) #4652

2.1mm DC power connector (1) #7467

9V battery clip (1) #1222

Protective cap (1) #1227

Control knobs (4) #7501

Brown Black Black Yellow Brown

1MΩ resistors (3) #7367

Brown Black Black Red Brown

10KΩ resistors (4) #7362

Brown Black Black Orange Brown

100KΩ resistor (3) #7365

Red Red Black Red Brown

22KΩ resistors (2) #7379

Blue Gray Black Red Brown

68KΩ resistor (1) #7380

Yellow Purple Black Orange Brown

470KΩ resistor (1) #7382

Blue Gold

Brown Black

10M resistors (2) #7383

Orange Orange Black Black Brown

330Ω resistor (1) #7375

Step 1: Install nineteen resistors

As you get started, note that the values of each component

are printed in their proper location on the circuit board un-

less otherwise noted.

Resistors have a low prole, sitting closer to the board than

taller components, so install them rst. Their locations are

marked on the board with the value of the part.

Resistors are not polarized, so it doesn’t matter which lead

goes in which eyelet. They can be installed in either direction.

Larger resistors may need to be placed on the

board at an angle due to their size.

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

EarthQuaker Devices

Monarch Rev 2 | 2011

Brown Black Black Orange Brown

100KΩ resistors (3) #7365

Red Red Black Red Brown

22KΩ resistors (2) #7379

Blue Gray Black Red Brown

68KΩ resistor (1) #7380

Brown Black Black Yellow Brown

1MΩ resistors (3) #7367

Brown Black Black Red Brown

10KΩ resistors (4) #7362

Yellow Purple Black Orange Brown

470KΩ resistor (1) #7382

Blue Gold

Brown Black

10MΩ resistors (2) #7383

Orange Orange Black Black Brown

330Ω resistor (1) #7375

1KΩ resistor (1) #7357

Brown Black Black Brown Brown

Brown Black Black Black Brown

100Ω resistor (1) #7352

Step 2: Install one diode

Diodes are polarized, so they need to be installed in the

correct orientation.

Note the stripe around one end: this marks the negative

(minus) lead of the diode. On the circuit board, the printed

outline of the diodes also shows this stripe. Install each

diode so that its stripe matches the direction shown on the

circuit board.

1N4001 rectier diode (1) #7404

Either round eyelet can be used here

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

Step 3: Install seventeen capacitors

The three types of capacitors shown below are polarized,

and have to be installed in the correct orientation. Note

the stripe running the length of each cap; this identies the

negative (minus) lead. On the circuit board, the circle for this

cap’s location has a round through hole on one side, and a

square through hole on the other: insert the capacitors with

their stripe facing the round hole side. (On polarized caps of

this type, there’s a second way to identify the minus lead: it

is the shorter of the two leads.)

The remaining capacitors below are not polarized. Solder

these caps in place facing either direction.

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

EarthQuaker Devices

Monarch Rev 2 | 2011

474J

100V

474J 100V

221J

100V

221J 100V

471J

100V

471J 100V

102J

100V

102J 100V

10uF

100uF

101J

100V

101J 100V

223J

100V

223J 100V

222J

100V

222J 100V

103J

100V

103J 100V

.0047J

100n

.0047J 100n

1uF

10µF capacitors (2) #7338

100µF capacitor (1) #7339

1µF capacitors (2) #7337

.47µF capacitor (1) #7336

470pF capacitor (1) #7328

220pF capacitor (1) #7327

.001µF capacitors (2) #7329

100pF capacitors (2) #7326

.022µF capacitor (1) #7332

.0022µF capacitor (1)

#7330

.01µF capacitors (2) #7331

.0047µF capacitor (1)

#7321

Step 5: Install nine lead wires

The kit comes with 24" of lead wire. Cut the wire into 2”

sections. This will give you twelve 2" sections.

Strip around 3/32" of both ends of the 2" pieces. On one of

the 2" pieces, strip 1/4" o one end and 3/32" o the other.

This allows this wire to jump lugs on the footswitch.

Nine lead wires will be installed in eyelets; V+, V-, B+, B-, G,

I, O, G, and L. Leave the second B+ and B- eyelets inside the

rectangle open for the next step.

The two extra wires will be used to connect the jacks to the

footswitch. Note: save the wire with 1/4" stripped for this

step. There will be one extra wire not needed.

Step 4: Install four transistors

Transistors are directional, and they need to be installed

in a specic direction to function properly. Note that each

transistor has a at side. On the circuit board, their locations

have one side with a single at line. Install the transistors to

match their outline.

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

24" of lead wire (1) #5960

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

24" of lead wire (1) #5960

V–V+ B+ B+ B– B– GO

IGL

.47

.022

.001

.0047

.0022

22K

1 M

10 M

330

220 p

10 M

10 K

100 p

100

100K

10 K

68K

100p

.01

10K

22 K

470 K

.001

470 p

100u

.01

100K

100 K

EarthQuaker Devices

Monarch Rev 2 | 2011

BS170 transistor (1) #7485

2N5457 transistors (3) #7486

170 2N

5457

Step 6: Install one 9V battery clip

9V battery clip (1) #1222

Protective cap (1) #1227

Place the 9V protective cap on the 9V clip. This cap protects

the battery clip from coming in contact with the other elec-

tronic components.

Flip the board over, the 9V battery clip will be installed on

the back of the board. The 9V battery clip has two leads,

black (negative) and red (positive). The black lead goes to

eyelet B- and the red lead goes to eyelet B+. The leads must

be installed in the proper eyelets to function properly.

Step 7: Install four control pots

The last components to go onto the circuit board are the four

control pots. They install on the back of the board. Each pot

has three connecting lugs, refer to the below left graphic to

be sure your orientation is correct when installing the pots.

If any pot has an index pin protruding from the case, break

it o before installation, so the pot will mount ush against

the pedal case. Needle nose pliers work well for removing

the pins.

Use the adhesive foam tape to insulate the back of the

pots from the soldered leads of the other parts on the circuit

board. Solder the pot in place, making sure the foam back

sits at the back of the board.

Refer to the left graphic to be sure your orientation is correct

when installing the pots.

B100K

A1M

A1MΩ “treble” pot #7459

Apply adhesive foam tape to back of the pots

If the pot has an index pin, break it o.

A1MΩ “bass” pot #7459

A1MΩ “gain” pot #7459

Apply adhesive foam tape to back of the pots

B100KΩ “level” pot #7453

Step 8: Install one LED indicator light

The LED mounting bezel consists of two main parts: A ring

that the LED ts into, and a plastic plug that goes over the

LED from the back side to keep it in place.

Like some of the caps and diodes, the LED is polarized and

has to be installed in a specic direction. One side of the di-

ode has a at edge, indicating the negative lead. Another in-

dication is that the negative lead is shorter than the positive.

Install the mounting bezel through the front of the enclosure.

From the inside, slip a lock washer and nut on and tighten it

up using a 3/8" socket. Insert the LED into the bezel so the

at side (short lead) faces the hole for the footswitch. Feed

the leads through the plastic plug, press the plug down until

it’s tight in the bezel. The LED will be held in place when you

solder the leads to the switches and circuit board. For a more

secure mount, you can run a bead of clear silicone adhesive

around the plastic plug.

5mm LED mounting bezel (1) #7432

5mm white LED (1) #7422

case

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