CM400i

4″ COAXIAL IN-CEILING SPEAKER

One 4.0 inch polypropylene woofer and one 1.0 inch convex aluminum tweeter with FerroFluid cooling. Rapid installation blind-mount, fixed- wing mounting mechanism with constant tension design affixing to ceiling thicknesses ranging from 0.025 inch (0.6 mm) to 1.87 inch (47.5 mm). Easy access five-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position. Separate tool-free magnetic grille and bezel assembly for ease of install and in-field painting. Powder-coated steel grille for lasting durability. 90 dB average sensitivity offers high-output capabilities and reduced amplification costs. UL 1480 (UEAY) and 2043 approved. Included accessories: Color-coded (orange) tile bridge, paint mask, Euroblock connector and UL cover plate.

Architectural Specifications
The loudspeaker shall consist of a 102 mm (4 in.) low-frequency transducer and a 25 mm (1.0 in.) high-frequency transducer with a crossover network installed in the enclosure. The low-frequency voice coil diameter shall be 19 mm (0.75 in.).

Performance specifications of a typical production unit shall be as follows: Useable frequency response shall extend from 75 Hz – 22 kHz (-10 dB, half space). Measured sensitivity (2.83 volt, 1 meter) shall be at least 90 dB. The speaker shall have a nomi­nal impedance of 4 ohms and be available for 25-, 70.7- and 100-volt modes with trans­former bypass position. The frequency-dividing network shall have a crossover frequency of 1.8 kHz with slopes of 12 dB per octave (2nd order) for both low- and high-pass filters. Rated power capacity shall be at least 20 watts continuous (RMS) and conform to EIA-426-B testing. Calcu­lated maximum continuous output at 1 meter shall be 100 dB.

The low-frequency transducer shall have a polypropylene cone with rubber surround. The high-frequency transducer shall be constructed of aluminum.

Installation for the speaker shall be by two-screw, blind-mount, constant tension fixed-winged mounting system and shall attach to ceiling thicknesses ranging from 0.6 mm (0.025 in.) to 47.5 mm (1.87 in.). The fixed-wing assembly shall be constructed of zinc-plated steel. A secondary attach­ment point has been included on the back of the unit. The external wiring input con­nector shall be a 4-pin, 5.08 mm Euroblock for 4 ohm or distributed systems and shall accept from 10 – 22 gauge wire.

The maximum backcan dimensions shall be no more than 166.4 mm (6.55 in.) in height by 153.7 mm (6.05 in.) in diameter. The maximum visible dimensions shall be no more than 11.9 mm (0.47 in.) in height by 207.0 mm (8.15 in.) in diameter. The backcan shall be constructed of steel.

The grille shall be constructed of an ABS bezel and powder-coated steel for lasting performance in the elements. The affixed grille and bezel shall be mounted to the speaker enclosure (backcan) via neodymium magnets and include a tool-free safety restraint. For in-field painting, a paint mask is included.

The speaker has an optional color-coded pre-construction bracket that shall be com­patible with an optional junction box. An 18-gauge wire whip, Euroblock connector and UL cover plate shall be included with the junction box. The maximum dimen­sions of the pre-construction bracket shall be no more than 635 mm (25.0 in.) in length by 381 mm (15.0 in.) in width and 128 mm (5.0 in.) (includes affixed junction box) in thickness with a 167.6 mm (6.0 in.) cutout for speaker mounting.

The system shall be the SoundTube CM400i for both low- and high-impedance applications.