American Audio V4001 Schematic
SERVICE MANUAL
V4001 Plus
MODEL NO.:V4001 Plus
Contents
Specification 1
Block Diagram 2
Packing View 3
Packing View Part List 4
Point To Point Wiring Diagram 5
Exploded View 6
Exploded View Part List 7
Electrical Part List 8-13
Schematic Diagram 14-15
Printed Circuit Board Diagram 16-17
IC Block Diagram 18-20
Trouble Shooting 21
General Specification
NORMAL LIMIT
* Input Sensitivity (4 ohm LOAD,POWER OUTPUT 900W) 0dB 0dB+/-2dB
* Rated Power Output Level(1KHz,THD+N 1%)
8 ohm TWO CHANNEL 680W 600W
4 ohm TWO CHANNEL(ONE CHANNEL) 1050W(1180W) 900W(1080W)
2 ohm ONE CHANNEL 1450W 1400W
8 ohm BRIDGED MONO 2100W 1800W
4 ohm BRIDGED MONO 2800W
* Frequency response
8 ohm 1W, Check point 1KHz, From 20Hz~20KHz +0.5/-1dB
* THD+N
4 ohm per channel 1/2 POWER,AT1KHz,BOTH CH DRIVE 0.07% 0.15%
* Channel Crosstalk
4 ohm rated power, "A" weighted
CH1-> CH2 85dB 70dB
CH2-> CH1 77dB 70dB
* SIGNAL-TO-NOISE RATIO
4 ohm RATED POWER,Audio Filter Weighted 105dB more than 85dB
* Input Clipping
No Load,Input 20dBm,Turn VR Output 40dBm THD+N <0.1%
* INDICATOR
CLIP LED (@4 ohm 1KHz,Just light) >=0.08%
SIGNAL LED (@Audio Analyzer 4 ohm Load,Set No Load,1KHz,Output:900WÙ0dBr)
-10dB LED just light -10dB -10dB+/-2dB
-20dB LED just light -20dB -20dB+/-2dB
SIGNAL LED just light -36dB -36dB+/-2dB
* DC OFFSET VOLTAGE (@ 4 ohm 1KHz 1/8 POWER) less than 100mV
* IDLE VOLTAGE (VOLUME MIN) 90+/-10mV
* DAMPING FACTOR @ 8ohm 400Hz 1W more than 200
* HPF TEST @8ohm 1KHz 1W Again Input 20Hz -10dBr Down
* Limiter @4ohm 1KHz Input:+4dBm(600 ohm) VOLUME MAX <=1%
* SUB WOOFER(SWITCH ON VOLUME MAX)
No load,Input:20Hz,Output:37dBm (Audio Analyzer Input/100K SUB VR MIN),Again Input 45Hz -10dBr DOWN
No load,Input:200Hz,Output:37dBm (Audio Analyzer Input/100K SUB VR MAX),Again Input 400Hz -10dBr DOWN
* VOLUME CONTROL(FRONT/REAR SWITCH ‘REAR’)
8 ohm 1KHz,THD+N 1% 600W
1
Block Diagram
ADJ
2
Packing View
3
Packing View Part List
REF NO. PART NO. Q'TY REMARK
1 507-V1001-2627 2
2 701-V1001A-3624 1
3 V4001B 1
4 505-DJ3500O-156 1
5 507-V4001-2639 1
DESCRIPTION
CUSHION
I/B ASS’Y
UNIT
BAG
INSIDE BOX
4
Point to Point Wiring Diagram
DC FAN
CN101
WA103
AMP BOARD (CH1)
WA102
T102
T101
TO:T8
+VH1
GRY
GRY
T203
CIRCUIT BREAKER
10
A
M
P
AC INLET
OUTPUT BOARD
CN701
CN702
CN703
CN704
CN301
CN304
INTPUT BOARD
DC FAN
CN302
CN101A
WA103A
POWER BOARD
WA204
WA301
CN101
WA103
WA103A
CN101A
T2
WA203
T1
AMP BOARD (CH2)
WA402
WA102
T102
TRANSFORMER
G
R
Y
TO:T10
TO:T9
TO:T11
TO:T12
-VH1
-VL1
+VL1
CT_A1
R
E
D
B
L
U
Y
E
L
Y
E
L
B
L
R
U
G
B
E
B
W
D
W
R
R
R
N
H
Y
H
N
T
T
TO:18
+VH1
T101
TO:16
TO:T13
TO:T15
TO:T17
-VH1
-VL1
+VL1
CT_A1
DISPLAY&VR B'D
CN103
BRN
BRN
WHT
WHT
T204
T206
T205
T202
T201
PEOTECT
SIGNAL
ACTIVE
CN206
CLIP
-10dB
-20dB
CN103A
BL
BL
WHT
RED
WHT
RED
T204
T206
T202
T205
T201
T203
5
Exploded View
V4001B
MODEL NO
TOLERANCE
EXPLODE DRAWING
DESCRIPTION
1:1
SCALE3RD ANGLE'S
FINISHING
MATERIAL
6
Loading...