SoundTube CM31-EZ – 3” Full-Range In-Ceiling Speaker

The SoundTube CM31-EZ is a premium 3” full-range in-ceiling speaker designed for 8-ohm or distributed audio applications, offering high-fidelity sound in ultra-compact installations. With a low-profile grille measuring just 6.3” in diameter, the CM31-EZ integrates a back can and driver for a clean, professional look in any environment.

The speaker features a six-position tap switch with transformer bypass, providing flexible power options for a wide range of systems. The included tile bridge and mounting hardware utilize the SpeedWing™ constant-tension mounting system for fast, secure, and adjustable installation, accommodating wall or ceiling thicknesses from 0.1” to 1.5” (2.5–38.1 mm).

SoundTube CM31-EZ Key Features

• 3” full-range polypropylene driver with butyl rubber surround for high-fidelity sound

• Shallow 3.5” deep steel back can with integrated driver and baffle

• Low-profile design with visible grille footprint of 6.3” (160.6 mm)

• Weatherized components for indoor or outdoor use

• SpeedWing™ fixed-wing mounting system for rapid blind-mount installation

• Six-position tap switch with transformer bypass

• Corrosion-resistant powder-coated aluminum grille with snap-fit attachment

• Ceramic input terminal accepts up to 10-gauge plenum-rated signal wire with thermal fuse

• Suitable for voice alarm applications under EU regulations EN60849 and BS5839-8

• UL 1480 (UEAY) and 2043 approved

Included Accessories

• Tile bridge for easy ceiling integration

The CM31-EZ is ideal for commercial, retail, hospitality, and voice alarm applications, delivering professional-grade sound in a compact, easy-to-install package.

SoundTube CM311-EZ Specifications