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SoundTube - CM800i - 8" Coaxial In-Ceiling Speaker (Single)

SoundTube - CM800i - 8" Coaxial In-Ceiling Speaker (Single)

The CMi series in-ceiling speakers are designed to deliver quality sound to your location. The SoundTube’s CMi series incorporates BroadBeam® full-frequency dispersion technology and fixed-wing installation features for any type of hanging-tile or sheet rock application.


  • Patented BroadBeam® waveguide technology delivers a consistent BroadBeam™ dispersion pattern for maximum coverage area per speaker.
  • One 8.0 inch polypropylene woofer and one 1.0 inch convex titanium tweeter with FerroFluid cooling mounted to a proprietary cast-aluminum baffle and heat sink.
  • Rapid-installation, blind-mount, fixed-wing mounting mechanism with constant-tension design affixing to ceiling thicknesses ranging from 0.25 inch (6.4 mm) to 1.91 inch (48.5 mm).
  • Easy-access six-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position.
  • Separate tool-free magnetic grille and bezel assembly with integrated safety cable for ease of install and in-field painting.
  • Steel grille with protective powder-coated finish for lasting durability.
  • An average sensitivity of 90 dB offers high-output capabilities and reduced amplification costs.
  • UL 1480 (UEAY) and 2043 approved.
  • High-quality black or white paint finish. Custom paint colors optional.
  • Included accessories: Tile bridge, conduit plate, Euro-block connector and paint mask.
  • Optional accessories: Color-coded (purple) pre-construction bracket (AC-CM8-PCB) and junction box (AC-CMi-JBOX).


Low Frequency (-10 dB)
71 Hz - 22 kHz

90.0 dB

Power Capacity RMS
125 W

25, 70.7, 100 Volt w/ Transformer

Max SPL dB @ 1 M
111.0 dB

Nominal Impedance
8 ohm

1 in. BroadBeam®

8 in. Poly

Four-pin Euro-block

Visible Height
27.4 mm (1.08 in.)

Visible Diameter
374.9 mm (14.76 in.)

Backcan Height
201.7 mm (7.94 in.)

Backcan Width
296.7 mm (11.68 in.)

5.7 kg (12.5 lbs.)

Shipping Weight
17.7 kg (39.0 lbs.)

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