Setting Up And Connecting; Usb Input; Power Supply - IMG STAGELINE SOUND -21SET Manual De Instrucciones

2. The wire which is coloured brown must be con-
GB
nected to the terminal which is marked with the
letter L or coloured red.
If the units are to be put out of operation
definitively, take them to a local recycling
plant for a disposal which is not harmful to
the environment.
3 Applications
This high-quality active speaker set is suited for
hi-fi applications, for AV presentations on the com-
puter, TV set or projector and for all other applica-
tions in small rooms where it is important to have a
sound reproduction that is rich in detail. For this
purpose, it is also possible to connect a computer
directly via the USB interface.
The speaker set includes a subwoofer with a
25 cm bass speaker and stereo speaker systems
equipped with a 10 cm bass-midrange speaker with
glass fibre cone and a 2.54 cm dome tweeter each.
The speakers are magnetically shielded. The sub-
woofer system also features the 3-channel ampli-
fier for the subwoofer and the stereo speakers and
adjusting facilities for balancing the sound.
The amplifier is provided with protective circuits
to prevent short circuit and overheating.
4

Setting Up and Connecting

Set up the subwoofer on an even surface. It is not
important to place the subwoofer exactly in the mid-
dle between the stereo speakers as it will not be
possible to precisely locate the very low frequen-
cies reproduced by the subwoofer. However, do not
place it too close to walls or in corners; this would
distort the frequency response and prevent the
heat dissipation of the integrated amplifier. Like-
wise, do not cover the bass-reflex openings on the
lower side.
Set up the stereo speakers on an even surface
and align them to the ears of the listener. Place the
tweeters at ear level, if possible.
Prior to making connections or changing any exist-
ing connections, switch off the subwoofer system
and the units to be connected.
Connect a signal source via one of the two con-
nection possibilities described in chapters 4.1 and
4.2 to the amplifier on the subwoofer. A mono sig-
8
nal for the subwoofer is internally created from the
two stereo channels of the signal source.
4.1 Input LINE IN
Connect a stereo output with line level (e. g. output
of a preamplifier, mixer, CD player or computer) to
the input LINE IN (1) on the subwoofer.

4.2 USB input

Alternatively, connect the computer via the jack PC
USB (5). Once the speaker system has been
connected to the computer being operated, the
operating system of the computer recognizes it as
a USB audio unit (sound output). If required, install
the drivers required by the operating system and
restart the computer.
The USB interface is equipped with a function
to reduce the dynamic range of the audio signal
(DRC = dynamic range control). This function is
switched on automatically, but can be deactivated
via the Windows operating system (not possible
for Mac OS ). Screenshots as examples of the
steps required under Windows XP and Windows 7
(German version) can be found on the last pages of
this instruction manual.
In the Control Panel ("Sounds and Audio
Devices" or "Hardware and Sound"), select "USB
Sound Device" for "Sound playback" (this is usually
made automatically after connection to the com-
puter). Via the advanced settings of the volume
control in the window "Advanced Settings for
Speaker", uncheck the box under "Other Settings"
or on the tab "Custom" for Windows 7 .
4.3 Stereo speakers
Connect the stereo speaker systems (e. g. via the
speaker cables provided) to the speaker outputs
SPEAKER OUT (6) of the subwoofer system
(RIGHT = right speaker, LEFT = left speaker).
Please observe the polarity (connect the terminals
of the same colour).

4.4 Power supply

Connect the plug of the mains cable (10) to a mains
socket (230 V~ / 50 Hz).