Protech Audio 65306 - Manual (Page 4)

1 TO THREE PAGE INPUTS CAN BE USED, PLUS BGM
HI LO SH HI LO HI LO SH HI LO
BGM IN
PAGE 2 IN PAGE 3 IN
I NPUTS
PAGE 1 IN
PAGE INPUT 3
IS NORMALLED
THRU BYPASS
RELAY WHEN
POWER IS OFF
HI LO SH HI LO HI GND ARM HI LO LO LO HI HI
PWR AMP
OUTPUT PWR AMP
INPUT
N/O N/C
SPKR GRID RELAY PAUSE SENSE
SPKR SENSING
MIC
TO
POWER AMP
INPUT
HI LO SH HI LO HI GND ARM HI LO LO LO HI HI
PWR AMP
OUTPUT PWR AMP
INPUT
N/O N/C
SPKR GRID RELAY PAUSE SENSE
SPKR SENSING
MIC
TO
POWER AMP
INPUT
USING A SPEAKER FOR CONTINUOUS NOISE SENSING.
USING A MICROPHONE FOR CONTINUOUS NOISE SENSING.
Page 3
SENSE INPUT MICROPHONE
MODEL 65306 BLOCK DIAGRAM FILE #65306-06, REV 2, 12-7-95
POWER
AMP
PROTECH AUDIO CORPORATION
INPUT ONE NORMALED THRU RELAY FOR POWER OFF BYPASS
FOR EXTERNAL SWITCHING
SENSE INPUT SPEAKER
PRIOR. PRIOR. PRIOR.
PRIOR.
SUM
LED METERING OF OUTPUT LEVEL, OR, EXPANSION LEVEL
OUTPUT BUFFER WITH SELECTABLE MAXIMUM OUTPUT (LIMITER)
CONTROL CIRCUIT FOR VCA, INCLUDING - THRESHOLD ATTACK TIME RELEASE TIME RATIO OF EXPANSION EXPANDER LIMIT
MIN/AUTO/MAX
SWITCH
4:1 COMPRES- SOR FIXED -20dB THRESHOLD
SUM
VCA
VOX
CIRCUIT FOR RELAY DRIVE
- Page 6 -
PAUSE SENSE CONTACTS
3 2 1
BGM