Choose Input Wire And Connectors; Choose Output Wire And Connectors - Crown CTs 4200 Operation Manual

CTs Power Amplifiers
3 Setup
3.4 Choose 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.
3.5 Choose 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.
26-40 ft (7.9-12.2 m)
41-60 ft (12.5-18.3 m)
Over 60 ft (18.3 m)
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
Distance Wire Size
up to 25 ft (7.6 m) 16 AWG
14 AWG
12 AWG
10 AWG
NOTE: CTs 8200 is shown. Some CTs 4200 features are in different locations.
Figure 3.5 Output Connector Wiring
(Typical of two channels)
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
Output panel
shown with
touch-proof
cover plate
removed.
page 7