Soundtube CM42-EZS-II 4-Inch Coaxial Ceiling Loudspeaker (Black)


Have a Question? Call Toll Free: 888-462-7828

Live Chat Email Us

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
Free Shipping (Continental US)
  • The CM42-EZs-II is a 4-inch, coaxial, two-way, blind-mount, in-ceiling speaker which delivers true high efficiency and performance across the operating bandwidth. By incorporating a 4-inch treated fiber driver with cloth surround in a sealed drawn steel backcan, this speaker delivers maximum frequency response (125 Hz – 22 kHz, - 10 dB) in a compact design.


    • 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 and two wire nuts.

    The CM42-EZs-II features a ceramic input terminal that accepts up to 10 gauge plenum rated signal wire and includes a thermal fuse for use in voice alarm applications subject to EU regulations EN60849 and BS5839-8.

    Mounting hardware is included and features a constant-tension winged mounting system with a 21-gauge “fullmetal” steel tile bridge ensuring rapid and secure installation in any sheetrock or drop-tile application. For easy ordering, stocking and installation, this series includes a color-coded (orange) tile bridge, optional pre-construction bracket, and a six-position tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position.

    Developed specifically for the paging and background music applications where cost, quality and fit are paramount, the CM42-EZs-II is ideal for hotels, retail stores, restaurants, airports, churches (under eave), medical facilities or boardrooms. Indeed, the entire CM-EZ-II series is engineered for installations where high-efficiency and rapid installation are critical attributes. For applications requiring additional bass response, SoundTube’s CM1001dT subwoofer provides true low-end response down to 50 Hz.

  • 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 / White / Custom
  • Shipping rates calculator