9
English
3 Applications
This compact active subwoofer is used as
a low-frequency addition to existing sound
systems for hi-fi applications, home cinema
and home recording . It is equipped with a
25 cm (10”) bass speaker . Its amplifier offers a
peak output power of 400 W .
The subwoofer features an adjustable low-
pass filter, a volume control and a phase reversal
switch . An automatic limiter will protect the
speaker against overload .
Two line level inputs are provided, each with
a feed-through output . A high-pass filter can be
activated for the feed-through outputs allow-
ing connection of sound systems for mid-high
range reproduction (satellites) and for full-range
reproduction . In addition, there is an output for
connecting another active subwoofer .
4 Setting Up and Connecting
Set up the subwoofer on a flat surface . It is not
important to place the subwoofer exactly in the
middle between the stereo speakers as it will
not be possible to precisely locate the very low
frequencies reproduced by the subwoofer . How-
ever, do not place the subwoofer too close to
walls or in corners; this will distort the frequency
response and impede any heat dissipation of the
integrated amplifier . Furthermore, do not cover
the bass-reflex opening on the back .
Before connecting or changing any existing
connections, switch off the subwoofer and the
devices to be connected .
4.1 Connecting an audio source
Combined XLR / 6 .3 mm jacks INPUT A / INPUT
B (1) are available to connect an audio source
with line level (e . g . mixer output, preamplifier,
line output of a computer) . The signals of the
two jacks are mixed to a mono signal for the
subwoofer .
The jacks are balanced . To connect audio
sources with unbalanced signals, use a 2-pole
6 .3 mm plug for the 6 .3 mm jack or a corre-
sponding adapter for the XLR jack .
If the outputs of the audio source are al-
ready being used by the existing sound system,
the sound system can be connected to the feed-
through outputs of the subwoofer (chapter 4 .2) .
4.2 Sound system
The existing sound system can be connected
to the outputs OUTPUT A / OUTPUT B (2) . Use
the switch HPF (7) to define whether the whole
signal of the inputs INPUT A / INPUT B (1) (OFF; for
full-range speakers) or only the mid-high range
part of the signal (ON; for satellite speakers) will
be sent to the sound system .
4.3 Additional subwoofer
An additional active subwoofer or the amplifier
of an additional subwoofer can be connected
via the jacks SUB OUT (4) . The output signal
depends on the settings of the controls VOL (5)
and HI CUT (6) .
4.4 Power supply
For power supply, use the mains cable provided
to connect the IEC connector “230 V~/ 50 Hz” (9)
to a mains socket (230 V/ 50 Hz) .
