SoundTube CM400I
4" Coaxial In-Ceiling Speaker


Call for price! Not available online.

Select model: (shipping times are approximate)

The CM400i is a 4" 2-way blind-mount in-ceiling speaker that delivers effective low-end response (75 Hz, -10 dB) and optimal off-axis performance (up to 10 kHz, EASEâ„¢ documented). The CM400i speaker design incorporates a low-profile grille and 5-position tap switch with voice coil/4 Ohm direct. Mounting hardware is included & features a fast & secure constant-tension fixed-wing mounting system.

Designed for in-ceiling background to mid-level SPL applications, the CM400i is ideal for music & paging in courthouses, schools, retail stores, grocery, restaurants, hospitals, hotels, casinos, museums, conference rooms & churches. For applications where additional bass is required, SoundTube’s CM1001d 10" subwoofer provides additional low-end response down to 41 Hz (-10 dB).


  • One 102 mm (4.0 in) polypropylene woofer and one 25 mm (1.0 in) convex aluminum tweeter with FerroFluidâ„¢ cooling.
  • Separate tool-free magnetic grille & bezel assembly for ease of install & in-field painting.
  • Rapid installation blind-mount, fixed- wing mounting mechanism with constant tension design affixing to ceiling thicknesses ranging from 0.6 mm (0.025 in) to 47.5 mm (1.87 in).
  • Easy access 5-position selectable tap switch for 25, 70.7 and 100 Volt applications with voice coil/4 Ohm direct simplifies ordering & inventory tracking.
  • Powder-coated steel grille for lasting durability.
  • 90 dB average sensitivity offers high-output capabilities & reduced amplification costs.

Click to download

Add to Cart

We're sorry, only of this item available

Call a Sales Pro at 800-356-5844 for more information

© 2016 Full Compass Systems, LTD  9770 Silicon Prairie Parkway, Madison, WI 53593  All rights reserved.

We are not responsible for typographical errors in pricing or product specification
inaccuracies in our catalog or web site. Prices are subject to change without notice.