Lithium Grim Hazy Octave Instruction Manual

Hazy Octave
Building instructions
V1.0

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
2
Table of contents
Components .......................................................................................................................................3
PCB layout ..........................................................................................................................................3
Bill of Materials...................................................................................................................................3
Introduction........................................................................................................................................5
Building sequence...............................................................................................................................5
Off board wiring..................................................................................................................................6
Modifications......................................................................................................................................7
Troubleshooting .................................................................................................................................7
Schematic ...........................................................................................................................................8
Read this entire manual thoroughly before you start building the effect!
Last update: 17-12-2016

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
3
43 mm x 44 mm
16.9 in x 17.3 in
Components
Name
Value
Comment
Name
Value
Comment
C1
100n
SMF
R1
4M7
C2
150p
Ceramic disc
R2
680k
C3
33u
Electrolyte
R3
820k
C4
1n
Ceramic disc
R4
180k
C5
100u
alternative 22u
R5
1k
C6
33u
Electrolyte
R6
220k
C7
220u
Electrolyte
R7
220R
C8
100n
SMF
R8
47k
C9
100u
Electrolyte
R9
22k
D1
1N34A
Germanium Diode or 1N270
R10
1k2
D2
1N34A
Germanium Diode or 1N270
R11
470R
D3
1N5817
R12
1M5
or 4M7
Q1
2N3906
SW1
DPDT/3PDT
Footswitch for Octave
Q2
2N2222A
TR1
42TM022
Q3
2N2222A
VR1
B50k
Pre Gain
VR2
C1k
Boost (or B1K as alternative)
VR3
A500k
Volume
PCB layout

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
4
Bill of Materials
Capacitors
Component
Amount
Comment
150p
1
Ceramic disc
1n
1
Ceramic disc
100n
2
SMF
33u
2
Electrolyte
100u
2
alternative 22u
220u
1
Electrolyte
Diodes
Component
Amount
Comment
1N34A or 1N270
2
Germanium Diode
1N5817
1
Transistors
Component
Amount
Comment
2N3906
1
alternative 2N5087
2N2222A
2
alternative 2N5088, 2N4401
Resistors
Component
Amount
Comment
220R
1
1% metalfilm
470R
1
1% metalfilm
1k
1
1% metalfilm
1k2
1
1% metalfilm
22k
1
1% metalfilm
47k
1
1% metalfilm
180k
1
1% metalfilm
220k
1
1% metalfilm
680k
1
1% metalfilm
820k
1
1% metalfilm
1M5
1
1% metalfilm
4M7
2
1% metalfilm
B50k
1
Linear 50k potentiometer
C1k
1
Reverse Logarithmic 1k potentiometer
A500k
1
Logarithmic 500k potentiometer
Transformer
Component
Amount
Comment
42TM022
1
alternatives 42TU011 or 42TM011

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
5
Introduction
The Hazy Fuzz is based on the Tycobrahe Octavia™(which itself is based on the Roger Mayer
Octavia™). It has been specially adapted to fit on a small PCB and include all sorts of modifications.
Mods include a pre-gain and octave switch as well as true bypass with pull down resistors. Read the
modifications section on how to get as close as possible to the original.
Building sequence
Soldering this board can be very complicated for some people since the solder pads are very close
together. Use a magnifying glass to make the job easier. If you want to experiment with other
transistors then you could socket them instead of soldering them to the board. You’ll need a 20 SIL,
break off the sockets and solder them to the board.
Start by soldering the resistors and diodes D1 and D2. Warning: Germanium diodes are fragile! Do
not heat them to long or they will break.
If you want to socket the transistors then solder the sockets now. Note: Do not blow on your solder
in an attempt to cool it down. That will possibly result in a bad join that might corrode!
Solder the ceramic capacitors next and then the small SMF capacitators, then the electrolytes, finish
by soldering the transformer to the board.
Place the transistors and you are almost ready to rock.
Besides the components mentioned in the Bill of Materials table, you will need:
2 input jacks. 2 mono jacks if you are not going to use a battery but only the 9V adapter. 1
mono (for output) and 1 stereo jack (for input) if you will be using both a 9V battery and the
9V adapter.
3PDT footswitch (9 pins).
2,1mm DC jack (isolated).
9v battery clip (optional).
22 gage stranded hook-up wire.
2 x LED. Only 1 if you are not implementing the octave switch (SW1)
Hammond 1590B case (or similar) in your favorite color.

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
6
Off board wiring
Wiring the pots VR1-VR2 is very simple. The rectangle pad marks pin 1 of a potentiometer. The
images below show how you can recognize which pin is which on a potentiometer.
Now you can wire the rest of the board, keep the wires as short as poss ible to prevent noise. Read
the modifications section on how to downsize!
Cathode (short leg)
Anode (long leg)
Ring
Sleeve
Tip
Tip
Sleeve
Cathode (short leg)
Anode (long leg)
R led
R led
Blue = pin 1
White = pin 2
Yellow = pin 3
3 2 1
Octave switch

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
7
Modifications
The layout of the board is made to incorporate as much modifications as possible. If you want to get
as close as possible to the original than leave out VR1 (pre-gain) and short pads 2 and 3. Also do not
install R1, R12, C8, C9 and the octave switch SW1 and just short both pads of SW1 and C8.
D1 and D2 need to be Germanium diodes. Preferably 1N34A or alternatively 1N270. It’s been
mentioned that you should try to match the forwarding voltages of both diodes for an optimal result.
The Boost is reported to perform best with a 100uF in C5. Alternatively you can try a 22uF in C5. If
you want to experiment with different values as C5 then solder 2 SIL pins in C5.
You can also use different mixes of transistors. I encourage you to experiment with this because it is
always a taste question. Some mixed will differ more profound than others. Mixes you could try for
Q1, Q2 and Q3:
2N3906 and 2N2222A (2x)
2N5087 and 2N4401 (2x)
2N5087 and 2N5088 (2x)
Troubleshooting
All PCB’s have been 100% factory e-tested and out of every batch I receive I build an effect to double
check, so there should not be a connection problem on the PCB itself.
The board is not working (at all), what now?
Check if your 9V is plugged in correctly (and/or soldered correctly on the board).
Check that you oriented the capacitors, IC’s ,transistors and diodes the right way. SMF, MKT
and ceramic capacitors as well as resistors do not need to be oriented.
Check if you used the correct values of the components. For resistors you can look here:
http://www.diyaudioandvideo.com/Electronics/Color/
Double and triple check your soldering! A loose or cold solder can be really bad for your
board.
Replace the IC, it might be defective. Before doing that first unplug the 9V and wait for 5
seconds.
Check that you have good/high grade components. A lot of Chinese sourced parts are fakes
(especially high end opamps, vintage diodes and transistors) so be careful that you source
your parts from reliable suppliers.

Hazy Octave v1.0
Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement
is implied.
8
Schematic