SoundTube CM42-EZS-II-BK 4in Coaxial In-Ceiling Shallow Backcan Speaker



Engineered for applications with lim­ited plenum space incorporating a Sound­Tube-specific shallow backcan with an installed depth of only 3.5 inches. One 4 inch (102 mm) treated fiber woofer with cloth surround and one 0.75 inch (19 mm) silk dome tweeter. Easy-access six-position tap switch for 25/70.7/100-volt and 16 ohm transformer bypass position allows for easy ordering, stocking and installation. Reduced amplification costs with maxi­mum efficiency including 87.5 dB sensitiv­ity and 16 ohm impedance. Superior voice intelligibility with an average coverage angle of 100° (2–10 kHz, independently verified). Cost-effective 16 ohm settings allows for the use of multiples of two, four, or six speakers in a system using a standard amplifier without a transformer.
Incorporates a painted steel grille for lasting durability. Ceramic input terminal accepts up to 10 gauge plenum rated signal wire and includes thermal fuse. Suitable for use in voice alarm applications subject to EU regulations EN60849 and BS5839-8. EN54-24 listed. Clamping allowance from 0.00 in. (0.0 mm) to 1.50 in. (38.1 mm). UL 1480 (UEAY) and 2043, CE (EMC Directive 89/366/EEC, EN55020, EN55013) approved.
Included accessories:
  • Tile bridge
  • UL-listed 0.5-inch flex conduit clamp
  • Paint shield
  • Two wire nuts
Frequency Response (-10 dB): 125 Hz – 22 kHz
Sensitivity: 87.5 dB
Power Capacity RMS: 20 W
Max SPL dB @ 1 M: 100.5 dB
Nominal Impedance: 16 ohm
Transformer Options: 25 / 70.7 / 100 Volt 16 Ohm direct
Tweeter: 0.75″ Silk
Woofer: 4″ Treated fiber
Visible Height: 8.4 mm (0.33 in.)
Visible Diameter: 190.5 mm (7.50 in.)
Backcan Height: 95.3 mm (3.75 in.)
Backcan Diameter: 146.8 mm (5.78 in.)
Weight: 1.8 kg (4.0 lb.)
Shipping Weight: 2.3 kg (5.0 lb.)
Optional Accessories: Color-coded (orange) pre-construction bracket (AC-CM4EZ-PCB) Junction box (AC-CM-EZ-JBOX).
Colors: Black or White

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