Introduction - EAW CIS961 Instruction Manual

. 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
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CIS961 and CIS991 –