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Figure 2.5.1 Connecting To a CST-2120 Transformer Module
NOTE: If driving a 70V or 100V distributed speaker system, use the optional CST-
2120 transformer module (see Appendix A).
Figure 2.5.2 Connecting to Speakers
2.5 Output Wiring
To drive distributed speaker systems designed to operate at 70V or 100V, connect
the amplifier to a CST-2120 transformer module with the jumper cable that shipped
with the CST-2120 transformer module, see Figure 2.5.1.
JBL recommends using pre-built or professionally wired, high-quality, two-conductor,
heavy gauge speaker wire. Speakers wires should be twisted cable, if possible. To
prevent the possibility of short-circuits, the wires should be stripped back no greater
than 6 mm (1/4 inch), see Figure 2.5.2.
Suggested below are guidelines to select the appropriate size of wire based on the
distance from amplifier to speaker. Check with local code as this may vary.
Distance
Up to 25 ft. (7.6m)
26-40 ft. (7.9-12.2m)
Wire Size
16AWG
14AWG
11
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