Instruction manual

ManualsBrandsCrown Manualsaudio & home theatre180A

Commercial Audio Series Amplifiers

page 10

Operation Manual

MIXER-AMP INPUT

2.3 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. You should use 3-pin Phoenix-type cable ends at the

amplifier inputs. Unbalanced line may also be used but may

result in noise over long cable runs.

Figure 2.3 shows connector pin assignments for balanced wir-

ing, and Figure 2.4 shows connector pin assignments for unbal-

anced wiring. The RCA input connectors can also be used for

unbalanced inputs.

Figure 2.3 Balanced Input

Connector Wiring

Figure 2.4 Unbalanced Input

Connector Wiring

2 Setup

2.4 Choose Output Wire and Connectors

For the amplifier output connectors, Crown recommends using

pre-built or professionally wired, high-quality, two-conductor,

heavy gauge speaker wire and connectors. You may use crimp-

on spade lugs for your output connectors (Figure 2.5). To prevent

the possibility of short-circuits, wrap or otherwise insulate

exposed loudspeaker cable connectors. Cover the output con-

nections with the supplied non-touch cover.

Using the guidelines below, select the appropriate size of wire

based on the distance from amplifier to speaker. The wire sizes

apply to the 4-ohm tap.

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 power

wiring.

NOTE: Custom wiring should only be performed by

qualified personnel. Class 2 wiring is required.

Use 2-conductor shielded cable and 3-pin Phoenix-type connec-

tors for Line Output wiring (Figure 2.6)

Figure 2.5 Two Amplifier Output Connectors on

280A Back Panel

(One Connector in 180A and 1160A)

Figure 2.6 Line Out Wiring.

Top: Balanced. Bottom: Unbalanced.

BALANCED LINE

TO DESTINATION

UNGROUNDED

PRODUCT WITH

2-PRONG POWER

CORD ONLY

TO DESTINATION

UNBALANCED LINE

OUTPUT

SHIELD

(This connection reduces

the signal level by 6 dB.)