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On the PS8, LS400, PS10, LS500, PS15 (used in passive mode), PS15 Bass and LS1200, the
connectors are wired as follows:
An additional Speakon connector on the PS15 connection panel is identified as 2 WAY ACTIVE; it is
reserved for operation in active mode (bi-amp, requires the NX242 Digital TDcontroller) and wired as
follows:
Selecting a cable consists of calculating the correct cable section (size) in relation to the load impedance
and the required cable length. Too small a cable section would increase its serial resistance; which would
induce power-loss and response variations (damping factor).
The following table indicates, for 3 common sizes, a cable length with a maximum serial resistance equal
to 4% of the load impedance (damping factor = 25).
Cable Section
1,5 mm² [AWG # 14]
2,5 mm² [AWG #12]
4 mm² [AWG #10]
Initial Setup Precautions
When first powering up a system including brand new cabinets, NEXO recommends a gradual, minimum
power ramp up period of one hour. This allows the loudspeaker components to stabilize during the very
first hours of usage. This is particularly true for adhesives within the speakers' moving assemblies.
In all cases it is advisable to connect the loudspeakers only after all the other system components have
been wired and are operating correctly. This is particularly important for amplifiers and the TDcontroller. It
is good practice to turn down all the amplifiers' gains before connecting the cabinets and to turn them on
again individually with a medium level music source fed into the system. The Sense LEDs of the
PS SERIES MANUAL REV3 10/10/05
LOUDSPEAKERS
Speakon Connector
Pin 1+
Pin 1-
Pin 2+
Pin 2-
Speakon Connector
Pin 1+
Pin 1-
Pin 2+
Pin 2-
Maximum Length
Impedance = 8 Ohms
Signal
SubBass + (optional)
SubBass - (optional)
Main PS system +
Main PS system -
Signal
PS15 LF +
PS15 LF -
PS15 HF +
PS15 HF -
Impedance = 4 Ohms
12 m [40 ft]
20 m [64 ft]
32 m [104 ft]
6 m [20 ft]
10 m [32 ft]
16 m [52 ft]
P.7
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