Queen of bone

Queen of bone
Fx type: dual Overdrive
©2014 – www.rullywow.com
(Version 1.2) Dimensions = 3.5” x 1.75”
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
Components - By Location
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
Caps
100uF
electro
10n
film
100pF
ceramic
10n
film
10n
film
100n
film
10n
film
10n
film
1uF
electro
1uF
film
10n
film
100pF
ceramic
10n
film
10n
film
100n
film
10n
film
10n
film
1uF
electro
1uF
film
10uF
electro
10uF
electro
10uF
electro
Resistors
R1
47k
R2
47k
R3
1M
R4
1M
R5
10k
R6
33k
R7
27k
R8
10k
R9
220k
R10
6k8
R11
1k
R12
6k8
R13
1M
R14
1M
R15
1M
R16
10k
R17
33k
R18
27k
R19
10k
R20
220k
R21
6k8
R22
1k
R23
6k8
R24
1M
Diodes
D1-D6*
D7-D12*
D13
D14
D15
D16
MA856
1S1588
1n4001
1n5817
1n5817
1n4001
Pots
PRES_1
50k (trim)
PRES_2
50k (trim)
GAIN_1
100kB
GAIN_2
100kB
TONE_1
25kB
TONE_2
25kB
VOL_1
100kA
VOL_2
100kA
IC
IC1/IC2*
JRC4580D
IC3
TC1044SCPA
Switches
DIP1/2
2pos DIP
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
Components - By Value
C6
C15
C3
C12
C1
C2
C4
C5
C7
C8
C11
C13
C14
C16
C17
C20
C21
C22
C9
C10
C18
C19
Caps
100n
film
100n
film
100pF
ceramic
100pF
ceramic
100uF
electro
10n
film
10n
film
10n
film
10n
film
10n
film
10n
film
10n
film
10n
film
10n
film
10n
film
10uF
electro
10uF
electro
10uF
electro
1uF
electro
1uF
film
1uF
electro
1uF
film
R5
R8
R16
R19
R11
R22
R3
R4
R13
R14
R15
R24
R9
R20
R7
R18
R6
R17
R1
R2
R10
R12
R21
R23
Resistors
10k
10k
10k
10k
1k
1k
1M
1M
1M
1M
1M
1M
220k
220k
27k
27k
33k
33k
47k
47k
6k8
6k8
6k8
6k8
Diodes
D1-D6*
MA856
D7-D12*
1S1588
D13
1n4001
D14
1n5817
D15
1n5817
D16
1n4001
Pots
PRES_1
50k (trim)
PRES_2
50k (trim)
GAIN_1
100kB
GAIN_2
100kB
TONE_1
25kB
TONE_2
25kB
VOL_1
100kA
VOL_2
100kA
IC
IC1/IC2*
JRC4580D
IC3
TC1044SCPA
Switches
DIP1/2
2pos DIP
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
The QUEEN OF BONE is based upon the King of Tone™ classic overdrive which is a
favorite with the boutique pedal market. Of course, there are a few tweaks on this
version. The board essentially is two overdrives in one, designed to cascade upon
each other. A common example is to set one for a clean-ish boost and the other
dirty. The possibilities are endless with the internal diode selection and presence
controls. The QOB has an 18V charge pump built in, which allows more headroom
and clarity.
This is a medium to hard level build, due to the high component count and different
types of components. There is nothing especially difficult about the build itself, it is
pretty straight forward – just a lot of components.
Diodes used are the scarce MA856 and 1S1588. You may find 1S1588 here and
there but the MA856 is basically unobtainum. You can substitute any standard
clipping diodes in D1-D6 (side 1) and D7-D12 (side 2). 1N914, 1N4148, red LED,
BAT41, etc can all be used.
Socketing is HIGHLY recommended. (plus it’s fun!). In my verified build, I used
1S1588 on side 2 and 1N4148 on side 1.
Charge Pump (IC3) is a TC1044SCPA. This guy boosts the 9V up to around +18v. Be
sure it is the “SCPA” version otherwise there is a potential for audio whine in the
circuit.
Powering is done with a standard 9VDC adapter. There are extra pads at the top of
the board for +9V and GND if you wish to mount your power jack at the top. These
pads are connected with the ones at the bottom for easy wiring if you choose to use
them. Ensure you select either the 9V option or 18V…not both. I like to use a
jumper (shunt) and a three segment piece of standard 2.54mm header to be able to
change voltage quickly. Here is a pic (yeah I burned the jumper with my iron ooops):
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
Presence Trimmers are located on the PCB to tweak the amount of presence in each
channel. You are welcome to locate these externally if you desire.
DIP Switches are located internally for each channel and take various diodes in/out of
the circuit. A popular mod is to use a DPDT or SPDT switches to locate these switches
externally. Experiment with these settings. The “ON” position adds more diodes into the
circuit resulting in more grit and distortion.
Wiring Diagram is provided here to help you wire up the pedal with side 1 cascading into
side 2. This is just a suggestion; however this way ensures a lot of versatility.
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
Drill Dimensions
(in inches and not to scale)
This is for version 1.2 (slightly different pot spacing from 1.1)
These are approximate dimensions, provided as a helping
tool. You should always double check before you drill
your enclosure.
Hammond 1590BB size or larger recommended.
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com
Queen of Bone v1.2
Based off schematics by
www.freestompboxes.org
and www.madbeanpedals.com
The “QUEEN of BONE” PCB, schematic, and build document are for DIY use only. Unauthorized copying
or reselling of PCBs is strictly prohibited without express permission from www.rullywow.com