Crown Audio CTs 1200 Manuel D’Utilisation

a. Connect the audio common leads (-) to the speaker’s

common terminal (marked COM). Refer to figures 2
and 3.

b. Connect the audio positive (+) leads to the + (SIG)

terminal.

c. Carefully reinstall housing cover using eight 5/16-18

x 1-3/4" hex head bolts, lockwashers and hex nuts
that were previously removed. Verify that all housing
and mounting bolts have been securely tightened.

Property damage, serious injury, or death could occur if the

housing is not closed properly. To reduce possibility of

explosion, housing cover must be kept tight (all eight

bolts fully tightened) while circuits are energized.

Audio wires should be sized properly by your licensed

installation electrician for your service application. This cable

requires a twisted shielded pair with an 18AWG mimum and

should produce no more than 15% signal loss over the

length of the cable run.

Under certain conditions these devices are capable of

producing sounds loud enough to cause hearing damage.

Adequate hearing protection should be worn if standing

within close proximity to device while testing. Recommenda-

tions in the OSHA Sound Level Standard

(29 CFR 1910) should not be exceeded.

1. After installation is complete, be sure to test the system

to verify that each speaker operates satisfactorily. If it
is found that the unit is too loud for its location, a
lower wattage tap may be selected. Carefully remove
the housing cover and move the speaker internal green
or red lead to a lower wattage tap (see figure 3).
Reinstall the housing cover and retest.

Property damage, serious injury, or death could occur if the

housing is not closed properly. To reduce possibility of

explosion, housing cover must be kept tight (all eight bolts

fully tightened) while circuits are energized.

2. After completion of initial system test, establish a

program for periodic testing of this device. Refer to the
authority having jurisdiction for this information.

3. Provide a copy of these instructions for the Safety

Engineer, system operator(s) and maintenance person-
nel.

Even if your warning system is operating properly, it may not

be completely effective. People may not hear or heed your

warning signal. You must recognize this fact and ensure that

your warning signal achieves its intended effect through

proper test/training sequences within your specific

application(s).

Failure to follow all safety precautions and instructions
may result in property damage, serious injury, or death to
you or others.

• Read and understand all instructions before performing

maintenance on this unit.

• Do not perform maintenance on this unit when circuits are

energized.

• Periodic checks should be made to ensure that effectiveness

of this device has not been reduced because speaker has
become clogged with a foreign substance or because
objects have been placed in front of the speaker.

• Any maintenance to this unit MUST be performed by a

trained electrician in accordance with NEC guidelines and
local codes.

• Never alter this unit in any manner. Safety in hazardous

locations may be jeopardized if additional openings or
alterations are made to this device.

• The nameplates, which contain cautionary or other infor-

mation of importance to maintenance personnel, should not
be obscured if exterior of device is painted.

Effectiveness of explosion-proof enclosure must be

maintained. Use caution to avoid damaging machined

surfaces.

BLK

RED

+

-

SPEAKER

SIGNAL SOURCE

SPEAKER

MODEL

FIELD COMMON (-) LEADS TO
COMMON TERMINAL.

FIELD POSITIVE (+) LEADS TO  (+)
TERMINAL.

SPEAKER INTERNAL GREEN OR RED
LEAD TO BE CONNECTED TO (SIG)
TERMINAL.

SIG(+)

COM(-)