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Treble Band Circuit
The shelving characteristics for the treble band can be obtained.
The equivalent circuit and the calculation formula during boost are shown below.
• Calculation example
Specification Setting frequency: f = 26000 Hz
Gain during maximum boost: G = 12 dB
Let us use R1 = 12.840 kΩ and R2 = 38.861 kΩ
The above constants are inserted in the following formula.
×
G
=
20
LOG
1
+
10
1
C
=
R2
π
2
f
(
G
/
20
10
–
=
π
×
2
26000
LC75411ES, 75411WS
C
R2
ω
2
2
R
1
+
( /
1
C
)
2
2
)
–
R1
1
1
≅
2
38861
2
–
12840
. 3
981
–
1
R1
R2
2700(pF)
No. 6928-25/33
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