Note For Bridge Speaker Connection - Panasonic CY-PA4003U Manuel D'instructions

Speaker System Setting <CY-PAD1003U>
2-channel (Monaural) Speaker System
INPUT
RCA cord (option)
(from Head Unit output terminal)
Right
Speaker output
(min. 4 )
Speaker output
Left
(min. 4 )
1-channel (Monaural) Speaker System
INPUT
RCA cord (option)
(from Head Unit output terminal)
(min. 2 )
Speaker output Subwoofer (Monaural)
20 CY-PA4003U/PA2003U/PAD1003U
Note:
 Connect the right and left RCA output terminals of the
Head Unit to the input terminals of this unit.
Switch to ON.

Note for Bridge Speaker Connection

 In case of 2-channel/stereo connection:
In case of multiple speakers to be mounted in a bridge
connection, confi rm the summed impedance to be 48
 in order to avoid ignition, smoking, or damage.
Summed impedance: 4 
Speaker: 2 
Speaker: 2 
Do not make a connection in such a manner.
Summed impedance: 2 
Speaker: 4  Speaker: 4 
<CY-PA4003U>
Note for RCA Input Connection:
 Selectively assign each front and rear output to either
RCA INPUT A or B, in accordance with the system from
which the output is coming.
 In case of a single line coming from the RCA output of
Head Unit, connect the line to RCA INPUT A.
Do not connect it to RCA INPUT B.
Summed impedance: 4 
Speaker: 8  Speaker: 8 
CY-PA4003U/PA2003U/PAD1003U 21