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Prescribed use
The Built-in Amplifier Module Active serves to amplify audio signals of audio systems
and to convert these signals into audible sound waves by means of a subwoofer
chassis that can be connected externally.
Ensure to connect the inputs only to low-level audio outputs or to loudspeaker out-
puts of audio systems.
Ensure to connect the loudspeaker output only to a suitable subwoofer chassis.
Ensure to connect the power supply connector only to 230V~/50Hz (10/16A) alter-
nating voltage.
Ensure to use the device only indoors, not outdoors. Contact with humidity, e.g. in
the bathroom or in other humid rooms, must absolutely be avoided.
Any use different to the one described above damages the built-in amplifier module.
Moreover, this involves dangers, e.g. short-circuit, fire, etc.
No part of the product may be modified or rebuilt. Do not open the housing!
Always observe the safety instructions.
Description of the individual parts
Unfold the fold-out pages at the beginning and at the end of these operating instruc-
tions to gain a better overview.
(1) Mains connecting point
(2) Fuse holder
(3) Loudspeaker output HI LEVEL OUT
(4) Operating mode selector
(5) Operational status indicator POWER
(6) Phase switch (Model 50W) or phase regulator (Model 150W)
(7) Separating frequency control CROSSOVER
(8) Volume control LEVEL
(9) Cinch connecting point LINE
(10) Loudspeaker input HI LEVEL IN
(11) Mains voltage selector
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Technical specifications
Model
Operating voltage
Power consumption
(max./standby)
Input sensitivity
(Cinch)
Input sensitivity
(Loudspeaker input)
Power output
(8 / 4 ohms)
Subwoofer separating frequency
High pass separating frequency
(only via loudspeaker
connecting points)
K-factor
S/ N ratio
Bass boost
Turnoff delay
Fuse (5x20mm)
50W
150W
230V~ / 50 Hz
230V~ / 50Hz or
115V~ / 60Hz
150 / 9 W
450 / 14 W
110 mV
110mV
2 V RMS
2 V RMS
50 / 80 W
150 / 280 W
40 – 160 Hz
40 – 160 Hz
(adjustable)
(adjustable)
125Hz / 6 dB
125Hz / 6 dB
0,04 %
0,05 %
79 dB(A)
77 dB( A)
35Hz / 5 dB
35Hz / 5 dB
approx. 20 min.
approx. 20 min.
T 1A / 250V
T 4A / 250V.202
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