Crown CTS 4200, CTS 8200 operation manual Setup, CTs Multi-Channel Power Amplifiers, page

CTs Multi-Channel Power Amplifiers

3 Setup

3.4Choose Input Wire and Connectors

Figure 3.3 shows connector pin assignments for balanced wiring, and Figure 3.4 shows connector pin assignments for unbalanced wiring.

When possible, use balanced wiring for signal input, which provides better rejection of unwanted noise and hum. For more information, refer to the Crown Amplifier Application Guide, available online at www.crownaudio.com

NOTE: Custom wiring should only be performed by qualified per- sonnel.

3.5Choose Output Wire and Connectors

Crown recommends using professionally constructed, high-

quality, two- or four-conductor, heavy gauge speaker wire and connectors. You may use terminal forks or bare wire for your output connectors (see Fig- ure 3.5). CTs amplifier terminal strips accept up to 10 AWG terminal forks which fit over a #8 screw. For best results, Crown recommends Panduit part #PV10-10LF-L or equivalent terminal fork. Screw spacing is shown in Figure 3.5.

To connect outputs, first remove the touch-proof cover plate covering the ter- minal strip by removing the screw which holds it in place.

To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable and connectors. Also, a touch-proof cover plate, which covers the terminal strips, is provided to help prevent short circuits. The cover plate should be reinstalled after connecting outputs.

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	Wire Size
up to 25 ft (7.6 m)	16 AWG
26-40 ft (7.9-12.2 m)	14 AWG
41-60 ft (12.5-18.3 m)	12 AWG
Over 60 ft (18.3 m)	10 AWG

CAUTION: Never connect the speaker return to the chassis of the amplifier, or damage to the amplifier may result.

CAUTION: Never use shielded cable for output wiring.

Operation Manual

Figure 3.3 Balanced Input

Connector Wiring

See the Crown Amplifier Appli- cation Guide, available online at www.crownaudio.com, for pin assignments for commonly used connector types.

Figure 3.4 Unbalanced Input

Connector Wiring

NOTE: CTs 8200 is shown. Some CTs 4200 features are in different locations.

Output panel

shown with touch-proof cover plate removed.

Figure 3.5 Output Connector Wiring

(Typical of two channels)

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