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SoundTube - CM690i - 6.5" Coaxial In-Ceiling Speaker (Single)

SoundTube - CM690i - 6.5" Coaxial In-Ceiling Speaker (Single)

CMi series in-ceiling speakers deliver to your expectations! 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 BroadBeamHP® waveguide technology delivers a consistent dispersion pattern for maximum intelligibility and edge-to-edge coverage.
  • A 66-watt transformer and high output for the sound reinforcement and PA markets.
  • One 6.5 inch treated fiber driver and one compression driver with a 1.0 inch exit mounted to a proprietary cast-aluminum baffle and heat sink.
  • Rapid-installation, blind-mount, fixed-wing mounting mechanism with constant-tension design affixes 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.
  • Average sensitivity of 91.5 dB offers high-output capabilities and reduced amplification costs.
  • UL 1480 (UEAY) and 2043 approved.
  • High-quality black or white paint finish.
  • Included accessories: Tile bridge, conduit plate, Euro-block connector and paint mask/installation aid.
  • Optional accessories: Color-coded (purple) pre-construction bracket (AC-CM8-PCB), junction box (AC-CMi-JBOX).


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

91.5 dB

Power Capacity RMS
100 W

25, 70.7, 100 Volt w/ Transformer

Max SPL dB @ 1 M
111.5 dB

Nominal Impedance
8 ohm

Transformer Options
0.75 - 66 W

6.5 in. Treated fiber

Full-Range Drivers
36 mm (1.42 in.) titanium compression driver

Four-pin Euroblock

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.)

5.8 kg (12.8 lbs.)

Shipping Weight
18.0 kg (39.6 lbs.)

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