2 Safety Notes
The units correspond to all relevant directives
of the EU and are therefore marked with
WARNING The active speaker system uses
dangerous mains voltage. Leave
servicing to skilled personnel
only. Inexpert handling of the
unit may result in electric shock.
G
The units are suitable for indoor use only.
Protect them against dripping water and
splash water, high air humidity and heat
(admissible ambient temperature range
0 – 40 °C).
G
Do not place any vessel filled with liquid on
the speaker systems, e. g. a drinking glass.
G
Immediately disconnect the mains plug
from the socket
1. if the speaker systems or the mains
cable are visibly damaged,
2. if a defect might have occurred after a
unit was dropped or suffered a similar
accident,
3. if malfunctions occur.
In any case the units must be repaired by
skilled personnel.
G
Never pull the mains cable to disconnect
the mains plug from the socket; always
seize the plug.
G
For cleaning only use a dry, soft cloth;
never use water or chemicals.
G
No guarantee claims for the units and no
liability for any resulting personal damage
or material damage will be accepted if the
units are used for other purposes than orig-
inally intended, if they not correctly con-
nected or operated, or if they not repaired
in an expert way.
If the units are to be put out of opera-
tion definitively, take them to a local
recycling plant for a disposal which is
not harmful to the environment.
3 Applications
This set of stereo speakers is ideally suited
for sound reproduction in smaller rooms (e. g.
.
hi-fi applications or computer applications or
in a home recording studio). The set consists
of an active speaker system with an inte-
grated 2-channel amplifier (class D) and of a
passive speaker system. Each speaker sys-
tem is designed as a 2-way bass reflex sys-
tem (bass speaker and dome tweeter). The
set includes an infrared remote control.
The set of speakers is equally designed
for wireless operation with a Bluetooth audio
source (e. g. smartphone, tablet PC) and for
operation with connected audio sources (e. g.
CD or DVD player, PC). For connection of the
audio sources, two analog line inputs and an
optical digital input are available. A subse-
quent unit, e. g. an active subwoofer system,
can be connected via a mono line output.
4 Setup / Connection
Set up the speaker systems on an even sur-
face and align them towards the ears of the
audience. The tweeters should be at ear
level, if possible.
Do not cover the bass reflex openings
and do not place the speaker systems too
close to walls or in corners; this would distort
the frequency response and adversely affect
the heat dissipation of the integrated amplifier.
Always switch off the SOUND-4BT/WS prior
to connection/disconnection.
1) The active speaker system reproduces the
left stereo channel; the passive speaker
system reproduces the right stereo chan-
nel.
Connect the two speaker systems with
each other via their speaker terminals (4),
observing the polarity (connect terminals
of the same colour).
2) For the connection of audio sources (e. g.
CD or DVD player, mixer, MP3 player,
notebook, PC, etc.), three inputs (2) are
available:
– OPTICAL IN: optical digital input via a
Toslink jack
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