10
English
5 Operation
CAUTION
Never adjust the audio system to
a very high volume . Permanent
high volumes may damage your
hearing!
Note:
To avoid switching noise, always switch on the
audio sources before switching on the subwoofer . After
use, switch off the subwoofer before switching off the
audio sources .
1) To prevent the initial volume from being too
high, turn the volume control VOL (5) to the
left stop (position “−∞”) before switching on
for the first time .
2) Use the ON/OFF switch (10) to switch on the
subwoofer . The LED POWER (3) lights up .
3) Reproduce sound, e . g . music, via the existing
sound system and add the desired low bass
part using the control VOL (5) . Only turn up
the control so far that the sound reproduced
is not distorted .
The LED SIGNAL (3) lights up when the signal
level is sufficient . If the LED CLIP (3) lights
up, the level is too high, and the signal is
distorted . In this case, turn back the control
VOL or reduce the output level of the audio
source .
4) Use the control HI CUT (6) to adjust the cutoff
frequency of the low-pass filter so that the
subwoofer will optimally complement the
frequency response of the other speakers .
Readjust the volume balance with the control
VOL if necessary .
5) If the speakers are placed at different dis-
tances from the listener, phase cancellation
may occur (the volume of certain frequencies
will be reduced) . To compensate this effect,
use the switch PHASE (8) to reverse the phase
of the subwoofer signal .
Test both switch positions to find the position
offering the bass reproduction of the high-
est volume at the listening position . Readjust
the volume balance with the control VOL if
necessary .
