Table of Contents
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1
OUT-L
A
C72
22uF/16V
5
C74
P2B
10KB
22uF/16V
AGND-3
B
OUT-R
C73
22uF/16V
2
C75
P2A
10KB
22uF/16V
AGND-3
MAIN VOLUME
C
A-12V-3
A+12V-3
10
9
8
MUTE-3
7
TRS_OUT_L
6
5
TRS_OUT_R
4
OUT-L
3
2
OUT-R
1
CN102
D
AGND-3
1
2
PHONES VOLUME
C76
22uF/16V
OUT-L
P4B
TRS_OUT_L
10KB
AGND-3
C77
22uF/16V
OUT-R
P4A
10KB
AGND-3
TRS_OUT_R
Approval
2
C148
R115
5
C78
R113
1.50k 1%
2
-
U14A
22uF/16V
3
+
NJM4580E
AGND-3
1.5k loading = Audio Taper
C149
R116
2
C79
R114
1.50k 1%
6
-
U14B
22uF/16V
5
+
NJM4580E
AGND-3
A+12V-3
C84
0.1uF
U14C
AGND-3
C85
0.1uF
A-12V-3
Check
Design
REV
DATE
3
47pF
2.43k 1%
R137
1K
MUTE-3
Q14
2SD2114K
1
EC15
R130
33 ohm
220uF/25V
EC16
R131
33 ohm
220uF/25V
47pF
R136
1K
MUTE-3
2.43k 1%
Q13
2SD2114K
7
*Additional +20dB gain added for user to get
headphones loud enough without a hot DAC output
NJM4580E
Title:
LXAN HEADPHONE
Size
Number
A4
PC13A022
Date :
2013/11/29
File Name:
HEADPHONE.SchDoc
Description
3
4
AGND-3
PHONES
1
J18
2
4
3
6
5
7
!CLIPS!
AGND-3
CHGND-3
Revision
0
Sheet
5
of
6
Design By :
ALESIS
4
A
B
C
D
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