njw1149a New Japan Radio Co.,Ltd, njw1149a Datasheet - Page 8

• Manufacturer Part Number: njw1149a
• Description: Audio Processor With Sound Enhancement And Trusurround 5.1ch Virtualizer
• Manufacturer: New Japan Radio Co.,Ltd

NJW1149A
< Output Type >
< OUT, LFIN, LFOUT Low Pass Filter Setting >
functions.
– 8 –
LPF cut off frequency and quality factor are adjusted by the external parts and given by the following
OUTa
OUTb
VOL2
VOL2
fc =
LFINa
LFINb
Fig 1. Bi-Amp
2
Buffer
Buffer
R
16 OUTa
36 OUTb
1
LFOUTa
LFOUTb
R
LPF
LPF
LPF
LPF
1
2
C
R1
1
C
AMP
AMP
AMP
AMP
2
(Hz)
High, Mid
High, Mid Lch.
Bass
Bass Lch. SP
Bass Rch. SP
Bass
High
High, Mid
High, Mid
High, Mid
Bass
Bass
Bass
Bass
High
High
C2
R2
, Mid
, Mid
, Mid Rch.SP
Lch. SP
Lch. SP
Lch. SP
Rch. SP
Rch. SP
Rch. SP
17 LFINa
35 LFINb
Lch.
Lch.SP
Rch.SP
Rch.SP
Lch.
Rch.SP
SP
SP
SP
Q =
C1
OUTa
OUTb
VOL2
VOL2
C
C
1
2
Fig 2. Sub-Woofer
R
R
2
1
LFINa
LFINb
1
18 LFOUTa
34 LFOUTb
C
C
Buffer
Buffer
1
2
R
R
LFOUTa
LFOUTb
2
1
LPF
LPF
LPF
LPF
Mixer
Mixer
Mixer
Mixer
AMP
AMP
AMP
Lch. SP
Lch. SP
SubWoofer
SubWoofer
Rch. SP
Rch. SP
Lch. SP
Lch. SP
SubWoofer
SubWoofer
Rch. SP
Rch. SP