Справочник Пользователя для Crown m120

page 7

M Series Power Amplifiers

Operation Manual

2.4 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. Depending upon which amplifier input you choose,
you should use either 3-pin male XLR connectors, TRS phone
connectors, or terminal forks at the amplifier inputs.

Unbalanced line may also be used but may result in noise over
long cable runs.

Note: Amplifier input connectors not used for audio signal input
may be used for daisy-chaining of the audio signal to other com-
ponents.

Figure 2.3 shows connector pin assignments for balanced wiring,
and Figure 2.4 shows connector pin assignments for unbalanced
wiring.

NOTE: Custom wiring should only be performed by
qualified personnel.

Figure 2.3

Balanced Input

Connector Wiring

Figure 2.4

Unbalanced Input

Connector Wiring

2 Setup

2.5 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. You may use two 4-pole Speakon

connectors (Fig-

ure 2.5 and Table 1) or banana plugs, spade lugs, or bare wire for
your output connectors (Figure 2.6). To prevent the possibility of
short-circuits, wrap or otherwise insulate exposed loudspeaker
cable connectors.

Note: Binding post outputs on European models come
with safety plugs installed to prevent European power-
cord plugs from being inserted. The top & bottom entry
positions for these connectors should therefore be used
with European models.

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 2.6

5-Way Binding Post Connections

Figure 2.5

Left: Speakon

Output Connector on Back Panel

Right: Speakon

Cable Connector

Table 1 Speakon

Output Pin Assignments