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Johannus DSA-4 User Manual

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User’s Manual Digital Stereo Acoustics DSA-4
JOHANNUSJOHANNUS
2
Twist the stripped ends of each wire to make it easy to connect them to the connector of the
loudspeaker boxes (see drawing).
To connect the loudspeaker wires push the red or the black connector button at the back of the
loudspeaker box or the acoustical system. Put the end of the stripped wire into the connector
hole and release the red (black) connector button.
To avoid a bad connection you have to check if only the stripped wire end is put in the connector
hole. When the insulation is put in the connector hole too, this channel will not work.
Also check if the loudspeakers are not connected in anti-phase. This means that the polarity of
the two wires is not the otherway around compared to the other loudspeaker boxes. This results
in the fact that the loudspeakers will work against each other instead of working together to
reproduce the sound. This wrong connection will give no defects to the device or the speakers
though. To avoid this ani-phase connection you have to make sure to always connect the wire
with the ‘round’ insulation into the red connector button of the speaker box and the wire with the
‘square’ insulation into the black connector button of the speaker box (see drawing).

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Johannus DSA-4 Specifications

Acoustic System IconAcoustic System
voltage230V (110V)
frequency50 Hz (60 Hz)
max supplied power120Watt
max power per channel20Watt
impedance per channel
input impedance1MÙ
input level-10dBV tot +4dBV
input level max+10dBV
frequency range20Hz till 20.000Hz (± 1dB)
dimensions21, 6 x 13, 2 x 19, 3cm (8.1" x 5.2" x 7.6")
weight3, 5kg ( 7.7lbs)
Loudspeaker Boxes IconLoudspeaker Boxes
system2-way
impedance
power nominal50Watt
power max100Watt
frequency range29Hz till 22.000Hz
dimensions24, 1 x 39, 1 x 22, 0 cm (9.5"x15.4"x8.7")
weight4, 6kg ( 10 lbs)