
Description
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.
Features:
- Engineered for applications with limited plenum space incorporating a Sound_Tube-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 maxi_mum efficiency including 87.5 dB sensitiv_ity 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 |
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.
Features:
- Engineered for applications with limited plenum space incorporating a Sound_Tube-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 maxi_mum efficiency including 87.5 dB sensitiv_ity 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 |
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Your home for all things pro audio—backed by expertise and experience. Connect with us today.





