Bose 2150 - Page 55

55
- -
OUTOUT
OFF
OUT
OFF
SEND
- -
CW CW
CH2
CH1
IN FXIN FX
ON HPON HP
IN FX
ON HP
5V
++
SENDSEND
"FX CH1"
LINE FILTER
"CH2 LEVEL"
AGND
"CH1 LEVEL"
AGND
OFF
OFF
"Off"
"Power"
DC Servo
VN12REF -15V2 +5V +15V3 +15V1
8 OHM 25V 50V 70V 4 OHM 8 OHM 35V 50V 100V
AC
INPUT
MODULE
RECV
GND
EARTH
NEUTRAL
LINE
SEND
"FX CH2"
++
Input
Select
+5V
Level VCA
+5V
COM
+5V
HP Filter
ON CLIP
120Hz120Hz
ON CLIP
120Hz
F100
Clip Limiter
"On"
AGND
DISPLAY
DC Servo
VSPOS
PGND
VSNEG
12V Floating
Regulator
Linear
Regulators
VSPOS
PGND
VSNEG
+15V2 AGND -15V1
4 OHM 35V 100V 70V 25V
CH2
OUTPUT OUTPUT
CH1
Input
Select
Level VCA
80Hz
80Hz
HP Filter Clip Limiter
SEND
RECV
Status LED Drive Clip Limiter Drive Powerup/ Overload Reset
POWER SUPPLY
Ready
Thermal
Signal
-6dB
VSNEG
VSPOS
07/16/01
COMMON
CH2
INPUT
RECEIVE
INPUT
CH1
INPUT
RECV
Thermal Limit
CONTROL CIRCUITRY
SIGNAL PROCESSING
"Standby"
-12dB
Protect
-20dB
Clip
VSNEG
VN12REF
POWER AMPLIFIER
M2150 SIGNAL FLOW
DIAGRAM
COMMON
VSPOS
Digital
Amplifier
Controller
CH2 EQ OPTION
"Sequence"
POWER SEQUENCING
ACM-1
INTERFACE
"Remote Level"
CH1 EQ OPTION
OUTPUT
TRANSFORMERS
Figure 6. Model 2150 Amplifier Signal Flow Block Diagram