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NJW1146 Просмотр технического описания (PDF) - Japan Radio Corporation
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NJW1146
Audio Processor with BBE
Japan Radio Corporation
NJW1146 Datasheet PDF : 27 Pages
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NJW1146
< Output Type >
OUTa
VOL2
VOL2
OUTb
LPF
AMP
High, Mid Lch.SP
LFINa
LFOUTa
Buffer
Buffer
LFINb
LFOUTb
AMP
AMP
Bass Lch. SP
Bass Rch. SP
OUTa
VOL2
VOL2
OUTb
AMP
Mixer
Lch. SP
LFINa
LFOUTa
Buffer
Buffer
LFINb
LFOUTb
AMP
SubWoofer
AMP
Fig 1. Bi-Amp
High, Mid Rch.SP
LPF
AMP
Fig 2. Sub-Woofer
Rch. SP
< OUT, LFIN, LFOUT Low Pass Filter Setting >
LPF cut off frequency and quality factor are adjusted by the external parts and given by the following
functions.
C1
8 LFINa
R1
R2
23 LFINb
7 OUTa
24 OUTb
C2
9 LFOUTa
22 LFOUTb
fc =
1
(Hz)
2
π
R1
⋅
R2
⋅
C1
⋅
C2
Q=
1
C2
⋅
R1
C1
⋅
R2
+
C1
⋅
R2
C2
⋅
R1
–8–
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