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Parts List
For general information regarding where to get parts and suggested part numbers please see
our useful Parts Guide at the project webpage or http://www.oakleysound.com/parts.pdf.
The components are grouped into values, the order of the component names is of no particular
consequence.
A quick note on European part descriptions. R is shorthand for ohm. K is shorthand for kilo-
ohm. R is shorthand for ohm. So 22R is 22 ohm, 1K5 is 1,500 ohms or 1.5 kilohms. For
capacitors: 1uF = one microfarad = 1000nF = one thousand nanofarad.
To prevent loss of the small '.' as the decimal point, a convention of inserting the unit in its
place is used. eg. 4R7 is a 4.7 ohm, 4K7 is a 4700 ohm resistor, 6n8 is a 6.8 nF capacitor.
Please note that if you are building a stereo version of this module you will need two
Filtrex-II boards. One of them will be built as a Master and the other as a Slave. For the
Slave module you should not fit parts marked with a *. Please see later in this
document for a suggested method on how to wire the two modules together.
Resistors
All resistors 5% or better 0.25W types. Those items marked with 1% need to be 1% metal
film (or better) 0.25W metal film resistors. For the sake of clarity it may be simpler to make all
resistors 1% metal film types.
R61 is a +3000ppm/K positive temperature coefficient resistor.
22R
47R
150R, 1%
330R
470R
1K
1K +3000ppm/K
1K5
2K2
2K2, 1%
2K7
3K
3K9
4K7
4K7, 1%
6K8
10K
10K, 1%
12K
R5, R53, R109, R4, R52, R115, R121, R96, R80, R81, R8, R122
R111, R116, R126
R51, R54
R10, R18, R19, R13, R17
R12, R20
R11
R61
R117
R9*, R91, R56, R46, R57
R25, R24
R47
R100
R1, R15
R87, R97, R74
R41, R43, R30, R34
R70, R39, R6, R38
R123, R3, R78, R58, R113, R55, R104, R110
R42, R32, R31, R44
R99
3
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