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SoundTube CM890I
8" Premium Coaxial Ceiling Speaker


The CM890i is a premium 8.0" 2-way, in-ceiling, high-efficiency, high-SPL loudspeaker for distributed or 8 Ohm applications.
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The CM890i is a premium 8.0" 2-way, in-ceiling, high-efficiency, high-SPL loudspeaker for distributed or 8 Ohm applications. The CM890i incorporates a dedicated 8.0" treated fiber driver and high-power compression transducer with a BroadBeamHP® waveguide to deliver a consistent dispersion pattern and superb intelligibility for the foreground music, sound reinforcement and PA markets. The CM890i also incorporates a 66 Watt transformer with a 6-position tap switch and voice coil/8 Ohm direct position. Mounting hardware and tile-bridge are included and feature a fast and secure constant-tension fixed wing mounting system.

Engineered for installations requiring full-range background/foreground music plus paging, the CM890i delivers a smooth and even coverage pattern. Ideal for casinos, convention centers, warehouses, nightclubs, gyms, aerobic rooms, airports, super stores, arenas, theme parks, transportation and shipping centers, stadiums and other high-SPL or longthrow applications.
For professional sound reinforcement applications, the CM890i includes a castaluminum M8™ motor-board, iriditeplated, powder-coated steel grille and a durable aluminum enclosure design.


  • Patented BroadBeamHP® dispersion technology delivers full-frequency, high-performance audio.
  • Reengineered rapid-installation features include easy-install SpeedWing™ mounting system with constant-tension design that mounts to ceiling thicknesses from 6.4 mm (.25") to 42.9 mm (1.69").
  • Separate low-profile grille and magnetic bezel ease installation and in-field service and painting
  • New speed-tap power settings save customers time and money on ordering, inventory tracking, installation and system tuning.
  • 25, 70.7 and 100 Volt transformer options with voice coil/8 Ohm direct.
  • High-frequency driver protection with automatic reset.
  • Sonically matched with SoundTube's new RSi (open ceiling) and SMi (surface mount) speakers for applications requiring combinations of hanging and mounted speakers.
  • Tile bridge included with each CMi speaker. Pre-construction bracket optional.
  • May be used in conjunction with CM1001d Subwoofer for applications where additional bass is required.
  • UL 1480 & 2043 pending.


  • Frequency Response(-3 dB): 77 Hz - 22 kHz
  • Low Frequency(-10 dB): 63 Hz
  • Sensitivity: 95.0
  • Power Capacity RMS: 125
  • Max SPL dB @ 1 M: 116.0
  • Nominal Impedance: 8 Ohm
  • Transformer Options: 0.75 - 66 W
  • Woofer: 8" Treated Fiber
  • Tweeter: 1" Compression Driver
  • Connections: 4-Pin Euroblock
  • Visible Height: 1.08 in. / 27.5 mm
  • Visible Diameter: 14.76 in. / 375 mm
  • Weight: 14.3 lbs / 6.4 kG
  • Colors: Black / White

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