e
n
g
l
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Interconnections with the speaker terminals
■
Connections to HIGH LEVEL INPUT
0
plugs
If the preamp section of your Hi Fi or audio-video system is not
fitted with a low level output, you should then connect the
subwoofer by using its loudspeaker terminals. When connec-
ting the
L (left)
and
R (right)
speaker outputs of your amplifier
to the
HIGH LEVEL INPUT
0
plugs of the subwoofer, be care-
ful not to cross (-) and (+) cord of either
L (left)
or
R (right)
channel. Such a phase inversion might damage your main
amplifier.
■
Connections HIGH LEVEL OUTPUT
-
plugs
These outputs can be used to bring the signal to the main
loudspeaker systems.
The signal from the
L (left)
and
R (right) HIGH LEVEL OUT-
PUT
-
plugs is the one being brought in by the
HIGH LEVEL
INPUT
0
connectors. These outputs can thus be used to bring
the signal to the main loudspeaker systems.
Power supply
The
AC in
=
cord must be connected to the mains to supply
the subwoofer. The selection of the right voltage 115 V - 230 V
is done with 115 V - 230 V
q
. Switch
POWER
w
, on
STAND BY
or
ON
. With the switch on the
STAND BY
position, the unit will
mute after a few minutes without input signal. The system
turns on automatically when signal comes back.
Adjustments
■
LEVEL
e
For a first volume adjustment, position the
CROSSOVER
FREQUENCY
r
at around 120 Hz, and turn slowly the
LEVEL
e
clockwise from minimum level up to a position where you feel that
the subwoofer sound level is appropriate. A check of the level
adjustment will be necessary after following steps.
■
CROSSOVER FREQUENCY
r
This potentiometer adjusts the cut-off frequency which deter-
mines the working bandwidth of the subwoofer. This adjust-
ment should be done according to the specifications of the
main speakers and the room acoustics. Choose the best fre-
quency after various listening tests.
Position
Ways
Drivers complement
MT420R
SAMOA
booksheft/
2
DOM42-17M18LB1
main speaker
stand
MT420R
MOOREA
floorstanding
2
DOM42-2
x
17M18LB1
main speaker
MT420R
JAVA
floorstanding
3
DOM42-13M15M2
main speaker
2
x
17M18LB1
MT420R
SUMATRA
floorstanding
3
DOM42-13M15M2
main speaker
2
x
21M18LB4N
MT420R
FARO
on/under
2
DOM42
center
TV
2
x
13M15-2TV
MT420R
BORNEO
on wall/
2
DOM42-17M18LB1
surround
booksheft
MT420R
JUPITER
floorstanding
1
21M18LB4C
active subwoofer
