YORKVILLE NX55P - Block Diagram; Signal Path Overview; Amplifier and Driver Stages

ON/OFF
BLOCK-DIAG-NX55P-00-2v0.ai
CLIP DETECT
CIRCUIT
INPUT
DIFF AMP
INTEGRATED
ERROR AMP
RAMP
GENERATOR
GND AT
OUTPUT
U9. Q8, U10
LEVEL SHIFT
U6
GATE DRIVE
MONO
SUM
BUFFERS
100 Hz 60 Hz
1
2
3
-120
U7
100 Hz
LIMITER
LED
60 Hz
HF DRIVER
WOOFER
WOOFER
OUTPUT
TRANSISTORS
OUTPUT
FILTER
MODEL TYPE:YS1002
HP
HP
60 Hz
BYPASS
LP
LP
EQ
LP LP
R47
+24 PHANTOM
1
3
2
LINK
1
3
2
2
3
1
LIMIT
LIMIT
LIMIT
2-TIER
LINEAR AMP
(HORN)
CLASS-D
AMPLIFIER
(WOOFER)
*CLASS-D AMPLIFIER (WOOFER)
*BLOCK DIAGRAM
LOCATED BELOW
NOTE: Shorting R47 will eliminate
feedback and audio signal allowing
troubleshooting of Level Shift, drivers
and output devices
LIMIT DETECT SLOW
LIMIT DETECT FAST
MIC
LINE / CD LEVEL
MIC LEVEL
LINE / CD
SILENT ON/OFF
RELAY
SILENT ON/OFF
RELAY
SILENT ON/OFF
VIA Q19
SILENT ON/OFF
RELAY
Tone
EQ (2 NOTCHES)
MIXER
Block Diagram for NX55 P
D E S I G N E D & M A N U FA
C T U R E D B Y Y O R K V I L L E S O U N D