Wiring USW-112XP Loudspeaker Cables with Belden 1502 Cable (or equivalent)
The most convenient method of wiring USW-112XP loudspeaker cables is with a multiconductor cable such as Belden 1502, which has dedicated conductors for DC power and balanced audio in a single jacket. When wiring USW-112XP loudspeaker cables with Belden 1502, use the conventions illustrated in the figure below and described in the table below.
The thicker red and black wires (18 AWG) are for DC power. Cables can be up to 150 ft with just 1 dB of peak SPL loss.
The blue, white, and shield drain wires (shielded together) are for audio.
Belden 1502 Composite Cable
Wire | Signal | Gauge |
|---|---|---|
Red | DC power (+) | 18 AWG |
Black | DC power (–) | 6.9 A peak (115 V AC); 3.4 A peak (230 V AC); 7.9 A peak (100 V AC) |
White | Balanced audio (+) | 22 AWG |
Blue | Balanced audio (–) | 22 AWG |
Shield drain | Balanced audio, (shield) | 24 AWG |
Caution
Make sure the 48 V DC from the external power supply is wired directly (and only) to the 48 V DC pins on the USW-112XP loudspeaker connector, and that the polarity is observed (- to -, + to +) to avoid damaging the loudspeaker. Make sure to wire the audio pins correctly or system performance will be compromised.