EAW CIS961, CIS991 Instruction Manual
INSTRUCTION MANUAL
CIS961 and CIS991
High-Output Ceiling-Mounted Loudspeakers
1. SAFETY INSTRUCTIONS
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1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10. Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as liquid has
been spilled or objects have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate normally, or has been
dropped.
11. The entire sound system must be designed in compliance with the current
standards and laws regarding electrical systems.
12. When installing and using this apparatus, keep in mind the technical
specifications indicated in the dedicated section of the manual.
13. Exposure to high sound levels can cause permanent hearing loss. The
sound pressure level which leads to hearing loss varies considerably
from one person to another, and depends on the duration of exposure.
The U.S. Government’s Occupational Safety and Health Administration
(OSHA) has established the maximum sound pressure levels that can be
with stood without causing damage, which are shown in the table below.
According to the OSHA regulations, any exposure over the maximum
limits indicated in the table can reduce the hearing capacity of a person.
To prevent potentially dangerous exposure to high sound pressure levels,
anyone subjected to such levels must use suitable protection. When
a EAW Commercial product capable of producing high sound levels is
being used, it is therefore necessary to wear ear plugs or protective
earphones when the limits shown in the table are exceeded. Consult the
specifications provided in the instruction manual to know the maximum
sound pressure (SPL) the loudspeaker is capable of producing.
14. Rigging Precautions: When mounting or suspending EAW Commercial
loudspeaker enclosures, it is essential that load ratings, rigging
techniques, and special safety considerations be appropriate for the
installation. Use only the mounting/rigging points on the loudspeaker
enclosure intended for this purpose. The user must determine the load
requirements, dynamic loading, and any other contributing factors
affecting the loudspeaker installation. The user must determine the
proper design factor for specific applications and the required load rating
of the connection to structure. Comply with all applicable federal, state,
and local regulations.
EAW Commercial strongly recommends the following rigging system
practices:
• Documentation: Thoroughly document the mounting/rigging design
with detailed drawings and parts lists.
• Analysis: Have a licensed structural engineer or other qualified
professional review and approve the mounting/rigging design before its
implementation.
• Installation: Use personnel experienced and qualified for mounting/
rigging loudspeakers in accordance with and in compliance with all
federal, state and local regulations.
DANGER: Loudspeakers should be mounted or suspended only
by persons with knowledge of the proper hardware and rigging
techniques. Failure to follow these precautions may result in damage
to the equipment, personal injury, or death.
The exclamation point within an equilateral triangle is
intended to alert the user of the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the apparatus.
WARNING! This equipment has been designed
to be installed by qualified professionals only!
There are many factors to be considered when
installing professional sound reinforcement systems,
including mechanical and electrical considerations, as well
as acoustic coverage and performance. EAW Commercial
strongly recommends that this equipment be installed only by a
professional sound installer or contractor.
2 – CIS961 and CIS991
Part No. 0023640 Rev. A 03/08
© 2008 LOUD Technologies Inc. All Rights Reserved.
Contents
1. SAFETY INSTRUCTIONS ...................................................2
2. INTRODUCTION ..................................................................3
3. FRONT PANEL FEATURES .................................................4
4. REAR PANEL FEATURES ....................................................5
5. INSTALLING THE LOUDSPEAKER ....................................6
6. SPECIFICATIONS ..............................................................10
7. OPTIONAL KITS ................................................................16
8. SERVICE INFORMATION .................................................19
9. EAW COMMERCIAL WARRANTY ..................................19
2. INTRODUCTION
The CIS961 and CIS991 are high-output ceiling-mounted
loudspeakers, designed for fixed installation into high ceiling
plenum spaces or open structures. Utilizing four 5.25" LF
cone woofers, four 4" MF cone woofers, and a horn-mounted
compression driver, these loudspeakers deliver coherent
point-source reproduction, as well as superior low-frequency
dispersion. The result is superior full-range performance in any
distributed loudspeaker system.
The CIS991 offers a broader high-frequency coverage
pattern than the CIS961. (Please refer to the polar diagrams on
pages 12–15.) Apart from this difference the two loudspeakers
are identical, and this instruction guide covers both models.
The loudspeakers are supplied with an integral 70V/100V
line transformer, rated to a maximum of 128 watts. Tap
settings are adjustable by means of a recessed rotary switch
on the front bezel, and allows selection of 128, 64, 32, and
16 watt taps at 70 V, and 128, 64, and 32 watt taps at 100 V.
In addition, the transformer can be bypassed, presenting an
8-ohm load to low-impedance systems.
The white powder-coated 18-gauge steel back can is
square in shape, and is designed to mount in a 24-inch
ceiling grid. The back can includes a recessed euroblock input
connector, with detachable mating plug, concealed behind a
hinged metal cover plate. A ceramic screw-terminal block is
also present. Four eye-bolts are supplied, and these need to be
screwed into the back can by the installer, prior to suspending
the assembly.
The baffle/can assembly is shipped with the transducers
installed. The powder-coated perforated steel grille is easily
installed once the wattage tap has been selected.
Optional installation kits include a 4-piece cable kit (AC-CK)
for suspension, and a 4-piece square trim ring kit (AC-TRK) that
dresses the baffle into suspended ceiling tile surrounds. (See
page 16 for more details of these kits.)
FEATURES
• High speech intelligibility at high power levels
• High output and smooth low-frequency dispersion
• Fast and easy installation
• Seamless, deep-drawn back can
• Integrated 4-point mounting system
• 4 x 5.25" LF cone woofers
• 4 x 4" MF cone woofers
• 1" HF horn-mounted compression driver
• 70V/100V transformer built-in
• 128, 64, 32, and 16 watt taps at 70 V
• 128, 64, and 32 watt taps at 100 V
• 8 ohm setting on selector switch (direct)
• Removable grille for access to transformer taps
• Euroblock Phoenix-type input connector
• "BS5839 Part 8" compliant screw terminal inputs
• Through-outputs for easy parallel connections to other
loudspeakers
• Cable strain relief
• Input connection covers
• Optional 4-piece cable suspension kit (AC-CK)
• Optional 4-piece trim ring kit (AC-TRK) to dress the
installation into 24" x 24" and 600 mm x 600 mm
ceiling tile surrounds
APPLICATIONS
• Foreground/background music systems
• Paging systems
• Continuous-duty applications
• Sound reinforcement systems
CIS961 and CIS991 – 3
3. FRONT PANEL FEATURES
1. MAIN ASSEMBLY
The loudspeaker is supplied with the drivers, crossovers,
transformer, front baffle, and rear metal can, all assembled
in one unit. Do not disassemble this unit.
2. SELECTOR SWITCHES
Two rotary switches allow you to select the different
transformer power taps, or to bypass the transformer. Use
a flat-ended screwdriver to make adjustments.
Turn off power to your amplifier before making any
adjustments.
Power Tap Selector
The loudspeaker can be used in 70 V or 100 V constantvoltage distributed systems.
For 70 V systems, select power
taps from 16 W, 32 W, 64 W, and
128 W.
For 100 V systems, select power
taps from 32 W, 64 W and 128 W.
Transformer/Direct Selector
In the transformer position, the
loudspeaker uses an internal
transformer with a choice of power
taps. Set this if you are using a
constant voltage amplifier of 70 V
or 100 V.
In the direct position, the
transformer is bypassed, the
power tap selector has no effect,
and the loudspeaker presents an
overall impedance of 8 ohm to a
conventional power amplifier.
3. FRONT GRILLE
The loudspeaker is supplied with the front grille not
attached to the front baffle. It comes with an insulating
backing sheet already attached, to hide the baffle and
driver assembly from view.
4. GRILLE ATTACHMENT FITTINGS
The grille is attached to the
main assembly after the selector
switches have been set to the
desired positions.
lock washer
screw
washer
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2
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4 – CIS961 and CIS991
4. REAR PANEL FEATURES
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5. EYEBOLTS
Four included eyebolts must be securely fitted to the metal
back can for the purpose of suspending the loudspeaker. All
four eyebolts must be used.
An optional mounting kit (AC-CK) is available that consists
of four 10-meter lengths of cable and suitable connectors.
6. INPUT CONNECTORS
The input connections to the loudspeaker are accessed by
moving two metal covers.
Phoenix (Euroblock)
connector.
This four-pin input accepts
a push-in connector for easy
installation. Two terminals
allow connection to the output
of the power amplifier, and two
through-terminals are supplied to
allow passing the power output
to other loudspeakers.
Terminal strip.
This four-terminal connector
allows easy connection of the
audio lines by screw terminals.
(This is also suitable for
those installations requiring
compliance with BS5839,
part 8.) Two terminals allow
connection to the output of
the power amplifier, and two
through-terminals are supplied
to allow passing the power output to other loudspeakers.
Secure the connections with screws.
7. STRAIN RELIEF
This sliding screw clamp allows the wiring to and from the
loudspeaker to be secured. The clamp can also be removed,
and standard conduit fittings (not supplied) connected.
6
7
5
CIS961 and CIS991 – 5
5. INSTALLATION
The loudspeaker is designed to be securely suspended
from the four eyebolts fixed to the metal back can. It can
be suspended into the aperture of a standard suspended
ceiling, or suspended from open plenum spaces.
Placement
There are two considerations when deciding where to
place the loudspeaker:
Location: When installing the loudspeaker in a suspended
ceiling with conventional ceiling tiles, the location of the
loudspeaker is determined in part by the support grid of the
suspended ceiling system.
Coverage: It is important to locate the loudspeaker in such
a way that the sound is evenly distributed over the entire
area. Keep in mind that the sound has farther to travel on
the outside edge of the coverage area for each individual
loudspeaker than directly below the loudspeaker, resulting
in a decrease in SPL at the outer edges of the listening
plane.
The loudspeaker placement should be designed such that
the edges of the coverage pattern for each loudspeaker are
at least touching. The more overlap that is provided (higher
density coverage), the more SPL the system is capable
of providing and the less variation in level as you move
around the area. The downside of higher density coverage,
of course, is that more loudspeakers are required for a
given area.
Note: The EAW website contains free PC software to help
you calculate the coverage for various loudspeakers and
room sizes. Please visit www.EAW.com/downloads and
look under "software" for the "coverage calculator."
MECHANICAL INSTALLATION
Note: Observe all local and national codes when
installing the loudspeaker.
Decide if you want to connect the loudspeaker to the
amplifier wiring before it is mounted in place, or if there is
enough access to the rear panel afterwards.
You can suspend the loudspeaker using your own safetycertified equipment, or purchase the optional cable
mounting kit AC-CK (more details are shown on page 16).
All four eyebolts must be used to suspend the loudspeaker,
and the weight must be completely supported by the four
suspension cables, and not by the ceiling frame.
If you are suspending the loudspeaker into a suspended
ceiling, we recommend using the optional trim ring kit (ACTRK) to dress the loudspeaker surrounds into a standard
suspended ceiling aperture 24" x 24" or 600 mm x 600 mm.
More details of the trim ring kit are shown on page 18.
6 – CIS961 and CIS991
Trim ring
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