Part No. 0009731 Rev C 07/07
DESCRIPTION
The CIS300 is a compact two-way flush-mount loudspeaker
assembly designed for fixed installations into typical ceiling plenum
spaces. Employing a modified HF waveguide originally developed
for use in studio monitors, the CIS300 delivers superior dispersion
and pattern control over conventional coaxial designs. The
waveguide integrates the HF driver with a 4” LF driver optimized for
smooth frequency response and seamless transition through the
crossover point. The result is acoustic performance not generally
associated with a commercial ceiling speaker of this size or in this
price range.
The CIS300 is supplied fully assembled, complete with a sealed zinc-
coated steel backcan and cam-style installation clamps. The metal
enclosure includes a recessed Euroblock input connector with
detachable mating plug, concealed behind a hinged metal cover
plate. A welded tab is provided for seismic restraint. Two steel T-Bar
support channels are provided to facilitate installation to a standard
tile ceiling. Also supplied is a steel split C-ring, which serves to
disperse the clamping pressure of the mounting cams.
The CIS300 is supplied with an integral 70/100V line transformer
rated to a maximum of 30 watts. Power is adjustable by means of
a recessed rotary switch on the front bezel, and allows selection
of 30, 15, 7.5, and 3.7 watt taps. A second recessed rotary switch
is provided to engage a 16-ohm tap for use with low-impedance
amplifiers, or a 150 Hz high-pass filter.
The speaker assembly is shipped with a detachable paper cover
fitted over the transducers inside the bezel. This protective cover
protects the drivers from damage during installation and also
serves as a paint cover, allowing convenient spray painting to match
interior décor. A powder-coated perforated steel grille is supplied,
and easily installed once the desired Tap Selector and Full-Range/
High-Pass switches have been set.
The entire assembly is fully tested at the time of manufacture and
is warranted to be free from defects in materials and workmanship
for a period of five years from the date of purchase. The speaker
is designed for use in ceiling plenum spaces and meets UL 1480
and UL 2043 regulations governing signaling devices and plenum
applications.
CIS
300
TWO-WAY CEILING MONITOR
• High-efficiency 4” polypropylene woofer
• 140º x 124º constant directivity horn with 1” cloth
dome tweeter
• Built-in LICC low-inductance passive crossover with high
frequency dynamic protection
• Lightweight, UV/weather resistant, high density
polystyrene, flush-mounting enclosure for multiple
applications and minimum visual intrusion
• Integrated mounting system and hardware included
• UL/cUL/CE listed
Features
• Meeting Rooms
• Hotels
• Houses of Worship
• Boardrooms
• Courtrooms
• Multi-Purpose Facilities
• Multizone Paging/Music Systems
Applications
Eastern Acoustic Works | One Main Street | Whitinsville, MA 01588 USA | TEL toll free within US/Canada 888.337.7404
TEL outside US 425.892.6503 | FAX 425.485.1152 |
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