Crown Audio VRack12000HD - Manual (Page 14)

Operation Manual page 14
Choose Input Wire and Connectors
Crown recommends using pre-built or professionally wired, balanced line (two-conductor plus shield), 22-24 gauge cables
with 3-pin XLR connectors. Unbalanced line may also be used but may result in noise over long cable runs.
Figure 1 shows connector pin assignments for balanced analog wiring or AES/EBU digital wiring. (The use of standard
analog cable with AES/EBU will result in diminished performance) For best results, 110 ohm shielded twisted-pair
cable for AES/EBU signals is highly recommended. Figure 2 shows connector pin assignments for unbalanced analog wiring.
NOTE: Custom wiring should only be performed by qualified personnel.
Choose Output Wire and Connectors
Crown recommends using pre-built or professionally wired, high-quality, two-, four- or eight-conductor, heavy gauge speaker
wire and connectors. Use Class 2 output wiring. You may use a 4- or 8-pole Speakon ® connector. To prevent the possibility of
short circuits, wrap or otherwise insulate exposed loudspeaker cable connectors.
CAUTION – SHOCK HAZARD: Potentially lethal voltages exist at the output connectors when the amplifier is
turned on and is passing a signal.
Using the guidelines below, select the appropriate size of wire based on the distance from amplifier to speaker.
Distance Wire Size
up to 25 ft. (up to 7.62 m) 16 AWG
26-40 ft. (7.62-12.2 m) 14 AWG
41-60 ft. (12.2-18.3 m) 12 AWG
61-100 ft. (18.3-30.5 m) 10 AWG
101-150 ft. (30.5-45.7 m) 8 AWG
151-250 ft. (45.7-76.2 m) 6 AWG
CAUTION: Never use shielded cable for output wiring.
Setup