Pioneer CM-C54T 4" 2-Way In-Ceiling Speaker (Pair, White) - Manual (Page 5)

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Loop-through connection
This connection method enables easily identifying a speaker that has a problem. If
the Euroblock connector is disconnected from a speaker, the subsequent speakers
do not work anymore. Connect the previous speaker wires to "+" (terminal 2) and "-"
(terminal 3) of IN and the next speaker wires to "+" (terminal 1) and "-" (terminal 4)
of the loop-through connection.
1 2 3 4
1 2 3 4
1 2 4 3
1 2 3 4
1 2 3 4
1 2 3 4 1 2 3 4
Power amplifier or
previous speaker Next speaker
Next speaker
Euroblock connector
Power amplifier
Speaker
1 Loosen the screw 1 and remove the connector cover 2 .
Disconnect the Euroblock connector 3 a from the rear connector.
2 Strip about 7 mm (0.28 inches) of the insulation at the tips of
the speaker wire. Loosen the screws 4 and 5 , open the cord
bushing 6 , and pass the speaker wire through the cord bushing.
3 Insert the conductors of the speaker wire into the terminals on the
Euroblock connector, and then fasten the conductors by tightening
the screws 3 b. Next, connect the Euroblock connector 3 a to the
rear connector.
CAUTION
Take care to tightly twist the conductors of the speaker wire and ensure the
conductors do not touch each other. There is a risk of damage to the loudspeaker
and power amplifier.
4 Tighten the screw 1 to fasten the connector cover 2 .
5 Tighten screw 4 and screw 5 in that order so that the speaker wire
fits into the groove 7 of the cord bushing 6 .
5 x2
6 x2 7 x2
4 x2 1
2
3 a
3 b
CAUTION
Take care so that the flat portion of the cord bushing 6 does not crush the
speaker wire.
Attaching the Fall Prevention Wire
• Attach the fall prevention wire (procured by the installer) to the
bracket 1 , and then secure the other end to the frame of the ceiling.
1
CAUTION
Always implement fall prevention measures for the loudspeaker.
Use a fall prevention wire of a suitable length and strength that takes into
consideration the weight of the loudspeaker and the state of the installation. If the
wire is too long, the loudspeaker may hit someone if it falls.
Fastening the Loudspeaker to the Ceiling
1 Confirm that the ceiling fastening tabs 1 are in the stored
position. If the ceiling fastening tabs are not in the stored position,
push the fastening screw 2 on the front of the loudspeaker all
the way in with a Phillips screwdriver, and then turn the screw
counterclockwise to store the ceiling fastening tabs.
2 Push the loudspeaker up into the hole until the frame 3 around the
front of the loudspeaker makes contact with the ceiling.
3 Push in the fastening screw 2 with a Phillips screwdriver and turn
the screw clockwise to move the four ceiling fastening tabs 1 and
fasten the loudspeaker to the ceiling board.
3
1 x4
2 x4
4
CAUTION
• Confirm that the ceiling fastening tabs 1 have extended out from the
loudspeaker and that the loudspeaker is securely fastened to the ceiling board.
If the loudspeaker is not sufficiently fastened to the ceiling board, it may fall from
the ceiling.
• Turn only fastening screw 2 . Do not turn any other screws. There is a risk of
damage and the loudspeaker falling.
• Do not fasten the ceiling fastening tabs 1 at the cut for the C-ring 4 .
• Take care so that the speaker wire is not crushed by the frame 3 around the front
of the loudspeaker and the ceiling fastening tabs 1 .