FuzzDog Cocoon Manuale utente

Co oon

All your 70’s rock record guitar

sounds in a box (maybe...)

No reproduction permitted without the express written

Important notes - DO NOT S IP!

If you’re using any of our footswit h daughterboards,

DOWNLOAD THE DAUGHTERBOARD DOCUMENT

•Download and read the appropriate build document for the daughterboard as well as

this one BEFORE you start the build.

•DO NOT solder the supplied Current Limiting Resistor (CLR) to the main circuit board

even if there is a place for it. This should be soldered to the footswitch daughterboard.

This applies to older PCBs with a pad marked LED next to the IN V G OU pads.

POWER SUPPLY

Unless otherwise stated in this document this circuit is designed to be powered with

9V DC Tip-Negative supply.

COMPONENT SPECS

Unless otherwise stated in this document:

•Resistors should be 0.25W. You can use those with higher ratings but check the

physical size of them. For kits that use 3mm resistors instead of standard 6mm, these

will usually be either 0.125W or 0.4W.

•Electrolytics caps should be at least 25V for 9V circuits, 35V for 18V circuits. Again,

check physical size if using higher ratings.

LAYOUT CONVENTIONS

Unless otherwise stated in this document, the following are used:

Ele trolyti apa itors:

Long leg (anode) to square pad. Stripe indicates cathode.

Diodes/LEDs:

Striped leg (cathode) to square pad. Short leg to square pad for LEDs.

The exception to this is with Russian germanium diodes - stripe = anode.

•ICs:

Square pad indicates pin 1.

Schematic + BOM

R1 4 7

R2 2M2

R3 2M2

R4 8 2

R5 470R

R6 1

R7 470

R8 47

R9 10

R10 1

C1 1n

C2 100n

C3 220n

C4 100p

C5 4n7

C6 100n

C7 100n

C8 4u7 elec

C9 10u elec

C10 100u elec

C11 100u elec

D1-3 BAT48

D4 1N5817

D5-6 1N5817

Q1-2 MPSA18

IC1 7660SEPA*

DRIVE 50 B

TONE 25 B

VOL 50 A

S1 SPDT ON-ON

*Optional charge pump to run the circuit at 18V from a 9V supply. You can also use a

MAX1044 or an LT1054. See page 5 regaring jumper depending on the part used. If you

don’t want to add this simply leave it out, as well as the parts shown above in blue.

**Optional so you can switch between 9V and 18V.

The power and signal pads on the PCB conform

to the FuzzDog Direct Connection format, so can

be paired with the appropriate daughterboard for

quick and easy offboard wiring. Check the

separate daughterboard document for details.

Be very careful when soldering the diodes and

transistors. They’re very sensitive to heat. You

should use some kind of heat sink (crocodile clip

or reverse action tweezers) on each leg as you

solder them. eep exposure to heat to a

minimum (under 2 seconds). Same goes for the

IC if you aren’t using a socket.

Snap the small metal tag off the pots so they can

be mounted flush in the box.

You should solder all other board-mounted

components before you solder the pots and

switches. Once they’re in place you’ll have no

access to much of the board. Make sure your

pots all line up nicely.

The best way to do that is to solder

a single pin of each pot in place then melt and

adjust if necessary before soldering in the other

two pins.

CHARGE PUMP

If using 7660 or MAX1044 you must add the

jumper shown in red above. No jumper required

for LT1054.

If you don’t want to add the swit h....

To run the ir uit at 9V, leave out the charge

pump components and add a jumper as shown

in blue.

To run the ir uit at 18V, include the charge

pump parts and jumper as shown in orange.

Test the board!

Che k the relevant daughterboard do ument for more

info before you undertake this stage.

UNDER NO CIRCUMSTANCES will troubleshooting help

be offered if you have skipped this stage. No ex eptions.

Once you’ve finished the circuit it makes sense to test is before starting on the switch and LED

wiring. It’ll cut down troubleshooting time in the long run. If the circuit works at this stage, but it

doesn’t once you wire up the switch - guess what? You’ve probably made a mistake with the switch.

Solder some nice, long lengths of wire to the board connections for 9V, GND, IN and OUT. Connect

IN and OUT to the jacks as shown. Connect all the GNDs together (twist them up and add a small

amount of solder to tack it). Connect the battery + lead to the 9V wire, same method. Plug in. Go!

If you’re using a ribbon cable you can tack the wires to the ends of that. It’s a lot easier to take them

off there than it is do desolder wires from the PCB pads.

If it works, carry on and do your switch wiring. If not... aw man. At least you know the problem is

with the circuit. Find out why, get it working, THEN worry about the switch etc.

Your ompleted ir uit board

in luding pots

Now’s the time

to refer to the

daughterboard

document for

your chosen

bypass method.

Enjoy your pedal!

This template is a rough guide only. You should ensure correct marking of your

enclosure before drilling. You use this template at your own risk.

Pedal Parts Ltd can accept no responsibility for incorrect drilling of enclosures.

FuzzDog.co.uk

Recommended drill sizes:

Pots 7mm

Jacks 10mm

Footswitch 12mm

DC Socket 12mm

Toggle switches 6mm

32mm

Drilling template

without battery - side DC

Hammond 1590B - 60 x 111 x 31mm

It’s a good idea to drill the pot and

toggle switch holes 1mm bigger i

you’re board-mounting them.

Wiggle room = good!

22mm

4mm

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