WA
12F
, WA
15F
Operation Manual rev 1.0.0
4. Connectors / Cabling
5
4. Connectors / Cabling
On the WA 12F and WA 15F loudspeakers, connections to the amplifier are made using 4-pole Neutrik
speakON® connectors. Two NL4MP connectors are mounted on the rear of the loudspeaker. The two
connectors are wired in parallel to allow connection of a second loudspeaker. Positive is connected to pin 1+
and negative to pin 1-. (Pins 2+ and 2- are not used on the WA 12F and WA 15F.)
speakON Connector
Signal
Pin 1+
Passive Full Range +
Pin 1-
Passive Full Range -
Pin 2+
N/C
Pin 2-
N/C
When choosing cable type, it is important select the correct cross sectional area in relation to the cable length
and the load impedance. A small cross sectional area will increase the cable’s series resistance, inducing
power loss and response variations (damping factor). Connectors wired with 2.5 sq. mm (12 gauge) cable will
be satisfactory under normal conditions; with very long cable runs, the wire size should be increased. Please
refer to the following table for guidance:
Cable Run (m)
C.S.A. Of Each
Conductor (mm)
Cable Resistance
(ohms)
% Power Loss into
8 ohms load
% Power Loss into
4 ohms load
10
2.5
4.0
6.0
0.14
0.09
0.06
1.7
1.1
0.73
3.5
2.2
1.5
25
2.5
4.0
6.0
0.35
0.22
0.14
4.3
2.7
1.8
8.6
5.4
3.6
50
2.5
4.0
6.0
0.69
0.43
0.29
8.6
5.4
3.6
17.0
11.0
7.2
10
2.5
4.0
6.0
1.38
0.86
0.58
17.0
11.0
7.2
35.0
22.0
14.00