SoundTube CM890i In Ceiling Speaker in Black

Patented BroadBeam Ring 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 8.0 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 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. Average sensitivity of 93.0 dB offers high-output capabilities and reduced amplification costs. UL 1480 (UEAY) and 2043 approved.

  • ColorBlack
    Manufacturer’s Suggested Retail Price 
    Manufacturer’s CategoryCMi In-Ceiling
    Shipping Weight47.55 lbs / 21.57 kg
    Carton Height18.75 in / 476.25 mm
    Carton Length32 in / 812.8 mm
    Carton Width14 in / 355.6 mm
    CertificationsCE, RoHS, UL1480A, UL2043
    Enclosure PropertiesABS Glass Fiber Reinforced, Injection Molded, Ported
    Enclosure Volume513.8 cu in / 8419.67 cu cm
    Included AccessoriesConduit Plate, Euroblock, Grille, Paint Mask, Tile Bridge
    Optional AccessoriesBlack Metal Grille (GRL-CM6/8-BK)|Black Weather-Guard Grille (GRL-CM6/8-WG-BK)|Black Flangeless Grill (GRL-CM6/8-FLG-BK)|Tile Bridge (AC-CM8-TB)|Pre-Construction Bracket (AC-CM8-PCB)|Junction Box (AC-CM-JBOX)
    Source Inputs4 Pin 5.08mm Euroblock
    Backcan Diameter11.68 in / 296.7 mm
    Backcan Height7.94 in / 201.7 mm
    Coverage Angle (-6dB @ 2kHz)80°
    Crossover Frequency2.2 kHz
    Cutout Width/Diameter12.75 in / 323.9 mm
    Directivity Factor (Q) (Averaged 100Hz – 10kHz, @ 2kHz)4.4 and 5.5
    Directivity Index (DI) dB (Averaged 100Hz – 10kHz, @ 2kHz)7.4dB and 5.5dB
    Frequency Response (± 10 dB)62 Hz – 22 kHz
    Frequency Response (± 3 dB)80 Hz – 22 kHz
    Grille PropertiesBlack, Standard-Flange, Magnetic, Powder-Coated, Paintable, Steel
    Low Frequency Voice Coil1.34 in / 34 mm
    Low Pass Crossover12 dB per octave 2nd order
    Magnetically BoostedNo
    Max. Ceiling Thickness1.91 in / 48.5 mm
    Max. Continuous Power RMS125w
    Max. Program Power250 W
    Minimum Impedance (Ω Ohms)5.2 Ω
    Minimum Ceiling Thickness0.25 in / 6.4 mm
    Network Type: High Pass12 dB per octave 2nd order
    Nominal Impedance (Ω Ohms)8 Ω
    Tweeter Driver1.42″ Titanium Compression Driver w/ Waveguide
    Woofer Driver8″ Treated paper cone Cloth surround
    Sensitivity dB @ 1W/1M93 dB
    Sensitivity dB @ 2.83V/1M93 dB
    Tap SelectorRotary Switch
    Transformer Options25 / 70.7 / 100 V, 8 Ohm direct
    Transformer Taps (25V/70.0V/100V)9W/66W/66W
    Visible Diameter14.76 in / 374.9 mm
    Visible Height1.08 in / 27.4 mm