Dynaudio BX30 Owner's Manual - Page 14

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Dynaudio BX30 Owner's Manual

Flow diagrams

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