FuzzDog DeathDrive Bedienungsanleitung

De th Drive

Octave-up into Rat into

boost for doomy destruction

No reproduction permitted without the express written

Important notes

If you’re using ny of our footswitch d ughterbo rds,

DOWNLOAD THE DAUGHTERBOARD DOCUMENT

•Download and read the appropriate build document for the daughterboard

as well as this one BEFORE you start.

•DO NOT solder the supplied Current imiting Resistor (C R) to the main

circuit board even if there is a place for it. This should be soldered to the

footswitch daughterboard.

POWER SUPPLY

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

powered with 9V DC.

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.

•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:

•Electrolytic c p citors:

ong leg (anode) to square pad.

•Diodes/LEDs:

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

•ICs:

Square pad indicates pin 1.

R1 1M

R2 1K

R3 1M

R4 10K

R5 470K

R6 47K

R7 10K

R8 2K2

R9 22K

R10 10K

R11 100K

R12 100K

R13 47K

R14 47K

R15 10K

R16 1M

R17 1K

R18 470K

R19 470K

R20 470R

R21 10K

R22 1M

R23 10K

R24 10K

R25 1K

R26 560R

R27 47R

R28 1K

R29 1K5

R30 1M

R31 10K

C1 100p

C2 100n

C3 100n

C4 100n

C5 100n

C6 1u elec

C7 1u elec

C8 10u

C9 100p

C10 1u‡

C11 22n

C12 1n

C13 33p

C14 100n

C15 100p

C16 4u7 elec

C17 2u2 elec

C18 4u7 elec

C19 1u elec

C20 3n3

C21 22n

C22 10u elec

C23 100u elec

IC1 OP07*

Q1 2N5457**

Q2 2N5089

Q3 2N5087

Q4 2N5089

Q5 2N5457**

Q6 BS170

D1-2 Ge***

D3 1N4148

D4 3mm Red ED

D5-7 1N4148

D8 1N4001

VO 100KA

DIST 100KA

FI T 100KA

OCT 50KB

BOOS 100KA

S1 SPDT ON-OFF-ON

Schematic

+ BOM

*Original is M308. Other single op-amps will work.

**Original is PF5102. Other N-channel FETs work in these buffer sections, and will have

very little or no impact on tone. Pads are included for through-hole or SMT FETs.

***We supply D9K which have the stipes at the anode rather than cathode. These don’t even

need to be germanium - 1N4148 work fine. They need to be matched for forward voltage.

These need to be reversed when pl ced in the PCB, i.e. c thode to squ re p d.

‡C10 is 1u on the original. We haven’t allowed a large space for that on the PCB, so if you

want to use this value you’ll need a small format part, such as M CC. There’s really no need

to have such a big value in there. Use anything from 100n - 1u.

Bigger, legible version

on next page.

Based on the trace

by Bugg

Two of 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. The optional Octave-

Bypass pads need to be wired differently, but a

daughterboard can still be used.

Be very careful when soldering the transistors

and diodes. They’re very sensitive to heat. Keep

exposure to heat to a minimum (under 2

seconds) and leave a few seconds between

soldering each leg. Same goes for the IC if you

aren’t using a socket.

The BS170 is very sensitive to static - handle

with care.

The glass case on the Ge transistors is very

delicate. Take care when bending the legs. Hold

a the leg right up against the body with some

small needle-nosed pliers to take the strain,

and bend the leg with your finger.

You should solder all other board-mounted

components before you solder the pots. 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. Same for the toggle switch. If your pots

don’t have protective plastic jackets ensure you

leave a decent gap between the pot body and

the PCB otherwise you risk shorting out the

circuit.

Snap the small metal tag off the pots so they

can be mounted flush in the box.

Initial wiring

USE WIRES! Our ribbon c bles re unlikely to be of ny

use unless you’ve compromised your enclosure l yout to

line up the p ds to d ughterbo rds.

If you aren’t going to use a footswitch to engage/bypass the OCTAVE section of the

circuit, add a jumper as shown below.

...otherwise add wires to all five of those pads. OV is for +supply, OG is ground.

O1 is Octave Bypass

O2 is the input to the Distortion section

O3 is Octave Out

Add long wires to the other two sets of pads for offboard wiring.

BOOST OCTAVE DISTORTION

Testing

You c n test the Distortion nd Boost sections

individu lly, s if they’re sep r te bo rds. Do the test

wiring s shown below for e ch section.

UNDER NO CIRCUMSTANCES will troubleshooting help

be offered if you h ve skipped this st ge. No exceptions.

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!

You’ll have to connect the wire from pad O2 to either O1 or O3, or you’ll get no signal from the

Distortion section.

There’s no need to connect power to the OV and OG pads - these are purely to supply power to an

ED if you’re adding the Octave footswitch.

If you have a circuit tester (we sell a few!) just use that as normal.

Your completed circuit bo rd

including pots

Wire it all up

The im ge below ssumes you’re using n Oct ve Byp ss footswitch. If not

just le ve th t out, h ving dded the jumper shown e rlier in this document.

You should also connect OV and OG to V and G on the Octave daughterboard, we just

left them out of the image as it would get messy. The wiring shown will light up the

ED when Octave is engaged.

INOUT

Please refer to the separate daughterboard document for further info regarding the

current limiting resistors and EDs. The DC socket can connect to any of the three

daughterboards.

See next page for more info if you’re building a 1590BB, two switch version.

Keeping up appearances...

On the bigger box versions of this kit, the LEDs ll sit to the s me side of the

footswitches. However, th t would look decidedly weird on the two switch,

1590BB version.

To keep things sweet you’ll have to flip the Distortion side daughterboard over before

soldering in the footswitch and ED. That way the ED can still sit in the

daughterboard and line up with the hole.

Everything will function exactly the same, you’ll just have wires twisted around

between the boards. Keep them slack and you’ll have no issues.

On/Offboard wiring

We designed the bo rd to fit nicely in 1590BB with ll controls mounted on

the PCB. Using bigger enclosure me ns some pots need to be wired

offbo rd.

The images on the next two pages show which pots need to be wired. You may need

to bend the legs down to ensure they don’t touch the PCB in some places.

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