d&b 4S - Manual (Page 6)

Fixed cable connection
The 4S and 5S loudspeakers are each supplied with a cover plate
[1] and a rubber grommet feed through [2]. For indoor operation,
these items can be used to hide the connector panel, if required.
For unprotected outdoor operation, the connector panel must be
covered, i.e. both items must be used to achieve an IP degree of
protection of IP34.
To install the fixed cable connection, proceed as follows:
1. Prepare the rubber grommet and the connection cable.
2. Remove the knockout opening in the cover plate and attach
the rubber grommet correspondingly.
3. Insert the connection cable through the rubber grommet and
connect the cable wires to the screw terminal.
Þ Observe the correct polarity!
4. Push the cover plate towards the connector panel until the two
spigots of the cover plate are in line with the center holes of
the two NL4 connectors.
5. Finally push the cover plate towards the cabinet until it
completely fits into the recess of the connector panel.
Fig. 5: Installing the fixed cable connection
2.3. Operation
NOTICE!
Only operate d&b loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Operation with D6 or D12
Select the controller setup 4S for 4S loudspeakers and 5S for 5S
loudspeakers.
Within the D12 amplifier they are available in "Dual Channel" or
"Mix TOP/SUB" mode. For combinations with active subwoofers
fed by a single 4-wire cable "Mix TOP/SUB" mode must be
selected.
Up to a total of four 4S or 5S loudspeakers can be driven by each
channel of the D6 or D12 amplifiers.
Fig. 4: Cover plate and rubber grommet
d&b 4S/5S Manual (1.2 EN) 6