Configuring Ps15R2 For Passive Or Active Mode; Cabling - Nexo PSR2 Series System Manual

2.1.4

Configuring PS15R2 for passive or active mode

Remove the six TORX screws that hold the connector panel.
Remove the connector panel so that filter WAGO connectors become accessible.
In Passive Mode, WAGO connector from filter should be inserted in "Passive In", and "Passive Out" should be connected to
speakers WAGO connector.
In Active Mode, WAGO connector from filter should be directly connected into speakers WAGO connector (PCB connectors are
then unused).
PS15R2 connector panel
2.2

Cabling

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 recommended cable length is given
by:
The table below indicates these values, for 3 common sizes.
Load Impedance ()
Cable section
1,5 mm² (AWG #15)
2,5 mm² (AWG #13)
4 mm² (AWG #11)
6 mm
Maximum allowed length is 4 times recommended length.
Example:
PS15R2 module has a 8  nominal impedance in passive mode. When connecting 2 modules in parallel, total load impedance
becomes 4.
Recommended length for 4mm
PS AND LS GENERAL SET-UP INSTRUCTIONS
L = Z x S
max
2
3m/10ft
5m/16ft
8m/26ft
2
(AWG #9) 12m/40ft
2
/ (AWG#11) is 16m / 52ft, maximum allowed length is 64m / 208ft.
System Manual PSR2 Series
Passive mode
2
S in mm , Z in Ohm, L
2.6 4
Recommended Cable Length
3m/13ft 6m/20ft 8m/26ft
7m/23ft 10m/33ft 13m/44ft
10m/33ft 16m/52ft 21m/70ft
16m/52ft 24m/79ft 32m/104ft
C
A
D
Active mode
in meters
max
5.3 8 16
12m/39ft 24m/79ft
20m/66ft 40m/131ft
32m/105ft 64m/210ft
48m/160ft 96m/315ft
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