Crown I-Tech I-T4000, Operation Manual

Page: 10 / 52

Operation Manual
I-Tech Series Power Amplifiers
page 10
2.3.2 Choose Input Wire and Connectors
Crown recommends using pre-built or professionally wired, bal-
anced line (two-conductor plus shield), 22-24 gauge cables and
connectors. Use 3-pin male XLR connectors.
Unbalanced line may also be used but may result in noise over
long cable runs.
Figure 2.1 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 2.2 shows connector pin
assignments for unbalanced analog wiring.
NOTE: Custom wiring should only be performed by qualified per-
sonnel.
2.3.3 Choose Output Wire and Connectors
Crown recommends using pre-built or professionally wired,
high-quality, two- or four-conductor, heavy gauge speaker wire
and connectors. Use Class 1 output wiring. You may use a 4-pole
Figure 2.1
Balanced Analog Input Connector Wiring or
AES/EBU Digital Connector Wiring
Figure 2.2 Unbalanced Analog Input Connector Wiring
2 Setup
Speakon connector (Figure 2.3) or banana plugs, spade lugs, or
bare wire for your output connectors (Figure 2.4). 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. 16 AWG
26-40 ft. 14 AWG
41-60 ft. 12 AWG
61-100 ft. 10 AWG
101-150 ft. 8 AWG
151-250 ft. 6 AWG
CAUTION: Never use shielded cable for output wiring.
Figure 2.4
5-Way Binding Post Connections
Figure 2.3
Left: Speakon Output Connector on Back Panel
Right: Speakon Cable Connector