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BX30 Owner’s Manual
14
Flow diagrams
Right
24 dB/oct
120 Hz
Right
a
a
b
b
Level
Phase 0°-180°
Line receiver
Limiter
Passiv limiterInput relay
Power Amplifier Speaker relay
Fix level
+4 dBm
-10 dBm
Mute
Phase +180°
24 dB/oct
10 Hz
Subsonic
Left
Left
24 dB/oct
95 Hz
24 dB/oct
80 Hz
Low pass
Speaker
Buffer
L+
L-
R+
R-
b
Left
Line driver
24 dB/oct
High pass 95 Hz
Output switch
Right
24 dB/oct
L+
L-
R+
R-
c
e
d
f
g
Right
Left
Equalizer
= also adjustable with a tool
Right
Left
IN XLR OUT XLR
VCA
b
Output relay
b
60°
h
Temperature
sensor
Figure 8.
Flowchart preamplifier
3 seconds
Timer
0 = fault
0 = fault
0 = fault
0 = fault
0 = fault
0 = fault
V++ ±10%
V-- ±10%
VCC ±5%
VEE ±5%
DC at amplifier
Temperature > 60°
Bass level
Red
Protection
indicator
Green
VU
indicator
h
Green; input
Red; input overload
b
f
g
Front of cabinet
Front of cabinet
Timer
d
e
Input level right
Input level left
attack 3s
hold 10s
OR
AND
Limiter
indicator
c
Red; limiting
Buffer
Comparator
Comparator
1 = no fault
= also adjustable with a tool
Reset
Limiter active
OR
0 = fault
Startup
Comparator
Comparator
Figure 9.
Flowchart protection circuit