BETA PREAMP
4
PARTS LIST, CONT.
PART VALUE
TYPE
NOTES
R31
3k3
Metal film resistor, 1/4W
R32
220k
Metal film resistor, 1/4W
R33
150R
Metal film resistor, 1/4W
R34
100R
Metal film resistor, 1/4W
RPD
2M2
Metal film resistor, 1/4W
Input pulldown resistor. Can be as low as 1M.
LEDR
4k7
Metal film resistor, 1/4W
LED current-limiting resistor. Adjust value to change LED brightness.
C1
200pF
MLCC capacitor, NP0/C0G
Can also use 220pF.
C2
2.2uF
Film capacitor, 7.2 x 5mm
C3
33pF
MLCC capacitor, NP0/C0G
C4
2.2uF
Film capacitor, 7.2 x 5mm
C5
5pF
MLCC capacitor, NP0/C0G
C6
47n
Film capacitor, 7.2 x 2.5mm
C7
2n2
Film capacitor, 7.2 x 2.5mm
C8
82pF
MLCC capacitor, NP0/C0G
C9
2.2uF
Film capacitor, 7.2 x 5mm
C10
2.2uF
Film capacitor, 7.2 x 5mm
C11
10uF
Electrolytic capacitor, 5mm
C12
33pF
MLCC capacitor, NP0/C0G
C13
2.2uF
Film capacitor, 7.2 x 5mm
C14
22n
Film capacitor, 7.2 x 2.5mm
Lead value. Use 56n for Bass version.
C15
100n
Film capacitor, 7.2 x 2.5mm
C16
10n
Film capacitor, 7.2 x 2.5mm
C17
10n
Film capacitor, 7.2 x 2.5mm
C18
4n7
Film capacitor, 7.2 x 2.5mm
Lead value. Use 10n for Bass version.
C19
27n
Film capacitor, 7.2 x 2.5mm
Lead value. Use 47n for Bass version.
C20
2.2uF
Film capacitor, 7.2 x 5mm
C21
10uF
Electrolytic capacitor, 5mm
C22
10uF
Electrolytic capacitor, 5mm
C23
100n
MLCC capacitor, X7R
C24
100n
MLCC capacitor, X7R
C25
100n
MLCC capacitor, X7R
C26
100n
MLCC capacitor, X7R
C27
100n
MLCC capacitor, X7R
C28
100n
MLCC capacitor, X7R
C29
100uF
Electrolytic capacitor, 6.3mm