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 3.7W 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.
| Frequency Range (–10 dB) | 90 Hz–22 kHz |
|---|---|
| Frequency Response (–3 dB) | 110 Hz–20 kHz |
| Horizontal Coverage Angle (–6 dB) | 140° averaged 1 kHz to 6 kHz |
| Vertical Coverage Angle (–6 dB) | 124° averaged 1 kHz to 6 kHz |
| System Sensitivity | 90 dB, 1W @ 1m |
| Rated Maximum SPL | 102 dB @ 1m |
| System Input Power Rating | 30W long term |
| Transformer Taps | 70V: 3.7W, 7.5W, 15W, 30W 100V: 7.5W, 15W, 30W |
| Front-mounted Rotary Switch | Full Range (70/100V Systems) High Pass @ 150 Hz (70/100V Systems) 16Ω (low-impedance operation) |
| Front-mounted Rotary Switch | Secondary Tap Positions |
| Low-Frequency | 4" (102 mm) polypropylene woofer |
| High-Frequency | 1" (25 mm) dome tweeter |
| Enclosure | 2-way, front loaded |
| Bezel Material | UL94V-0 rated material |
| Rear Enclosure Material | Steel |
| Grille | Perforated metal with weather-resistant coating |
| Safety Features | Rear safety loop located at rear of enclosure for attachment of load bearing safety strap |
| Input/Output Connectors | Removable locking connector with screw-down terminals. 1 IN terminals and 2 loop-thru OUT terminals |
| Included Accessories | Grille, Support Rails, C-Ring, Removable Locking Connector, Cut-out Template, Paint Shield |
| Cutout Size | 7.8" (199 mm) |
| Front of Ceiling Tile to Back of Can | 4.6" (116 mm) |
| Dimensions (Dia x H) | 8.7" (221 mm) x 5.7" (144 mm) |
| Net Weight | 12.4 lbs (5.6 kg) |
Usually arrives in 5-9 business days.
