SETTING-UP ADVICE
This technique prevents noise currents flowing on the return path of the signal. (Note that
this is only acceptable for a short cable).
NXAMP power outputs wiring
NEXO recommends the exclusive use of multi-conductor cables to connect the system: the
cable kit is compatible with all the cabinets, and there is no possible confusion between LF,
MF and HF sections.
Cable choice consists mainly of selecting cables of the correct sectional dimension (size) in
relation to the load resistance and the cable length. Too small a cable section will increase
both its serial resistance and its capacitance; this reduces the electrical power delivered to
the loudspeaker and can also induce response (damping factor) variations.
For a serial resistance less or equal to 4% of the load impedance (damping factor = 25),
the maximum cable length is given by:
L
max
= Z x S S in mm
2
, Z in Ohm, L
max
in meters
The table below indicates these values, for 3 common sizes.
Load Impedance (
Ω
)
2
3 4 6 8 12
16
Cable section
Maximum Length (meters)
1,5 mm² (AWG #14)
3
4.5
6
9
12
18
24
2,5
mm²
(AWG
#12)
5 7.5 10 15 20 30 40
4
mm²
(AWG
#10)
8 12 16 24 32 48 64
PAGE 25 OF 91
