SoundTube CM890I 8″ 2-Way High Power In-Ceiling Speaker

The SoundTube CM890I is a high-output 2-way 8-inch in-ceiling speaker from the CMi In-Ceiling series, engineered for demanding commercial sound reinforcement and public address applications. At the heart of the CM890I is SoundTube’s patented BroadBeam Ring waveguide technology, which delivers a consistent, wide dispersion pattern for maximum speech intelligibility and edge-to-edge coverage across large ceiling tiles and open commercial spaces. Rated at 150 W RMS (300 W program) with 92 dB sensitivity and a 66-watt built-in transformer, the CM890I supports 25 V, 70.7 V, and 100 V distributed audio systems as well as 8-ohm direct. Available in Black (CM890I-BK) and White (CM890I-WH), and certified UL 1480 (UEAY) and UL 2043 for plenum-rated installations. Order from Creation Networks, your authorized SoundTube dealer.

Full Product Description

The CM890I combines an 8-inch high-efficiency woofer with a 1.42-inch titanium compression driver mounted to a proprietary cast-aluminum baffle and heat sink, creating a 2-way system with a 2.5 kHz crossover frequency. Frequency response extends from 62 Hz to 22 kHz (10 dB) and 80 Hz to 22 kHz (3 dB). The rapid-installation blind-mount fixed-wing SpeedWing constant-tension mechanism accommodates ceiling thicknesses from 0.25 inch to 1.91 inch without requiring access from above. A separate tool-free magnetic grille and bezel assembly with integrated safety cable allows the grille to be removed and painted in-field without damaging the speaker. Included accessories are a tile bridge, conduit plate, Euroblock connector, and paint mask/installation aid. Optional accessories include a metal white grille (GRL-CM6/8-WH-1), weather-guard grille, flangeless grille, pre-construction bracket, and junction box. The CM890I is CE and RoHS certified in addition to UL 1480 and UL 2043 approvals. Available from Creation Networks.

Key Features

• Patented BroadBeam Ring Waveguide: Consistent wide-dispersion pattern for maximum speech intelligibility and uniform coverage
• 150 W RMS / 300 W Program: High-power handling for large commercial spaces and PA applications
• 92 dB Sensitivity: High-output performance that reduces amplification costs
• 66 W Transformer Included: Supports 25 V, 70.7 V, 100 V and 8-ohm direct with easy-access six-position rotary tap switch
• SpeedWing Blind-Mount System: Accommodates ceiling thicknesses from 0.25″ to 1.91″ no above-ceiling access required
• Titanium Compression Driver: 1.42″ driver with proprietary cast-aluminum baffle and heat sink for long-term high-power reliability
• Tool-Free Magnetic Grille: Separate bezel with integrated safety cable for easy removal and in-field painting
• Plenum Rated: UL 1480 (UEAY) and UL 2043 approved for above-ceiling air-handling space installation
• Available in Black or White: Coordinates with a wide range of ceiling tile colors and architectural finishes
• Included Accessories: Tile bridge, conduit plate, Euroblock connector, paint mask/installation aid

Typical Applications

The CM890I is designed for commercial environments requiring high intelligibility and broad coverage including large conference rooms, lecture halls, convention centers, retail stores, airport concourses, houses of worship, and school gymnasiums. Its 300 W program power and PA-class sensitivity make it suitable for both background music and speech reinforcement duties. Contact Creation Networks for system design consultation, project pricing, and volume quotes.

Technical Specifications

Frequently Asked Questions

Is the CM890I suitable for plenum-rated installations?Yes. The CM890I carries both UL 1480 (UEAY) and UL 2043 certifications, making it approved for installation in above-ceiling air-handling spaces.What ceiling thickness range does the SpeedWing mounting system accommodate?The fixed-wing blind-mount mechanism handles ceiling thicknesses from 0.25 inch (6.4 mm) to 1.91 inch (48.5 mm) without requiring above-ceiling access.Can the CM890I be used on 70.7 V and 100 V distributed audio systems?Yes. The integrated 66-watt transformer with six-position rotary tap switch supports 25 V, 70.7 V, and 100 V operation, plus an 8-ohm direct bypass position.What drivers does the CM890I use?The CM890I uses an 8-inch high-efficiency woofer paired with a 1.42-inch titanium compression driver mounted to a cast-aluminum baffle and heat sink, with a 2.5 kHz crossover.Is the grille paintable?Yes. The magnetic grille and bezel assembly are paintable in-field. A paint mask is included with the speaker to protect the driver during painting.What optional accessories are available?Optional accessories include a white metal grille (GRL-CM6/8-WH-1), white weather-guard grille (GRL-CM6/8-WG-WH), white flangeless grille (GRL-CM6/8-FLG-WH), tile bridge (AC-CM8-TB), pre-construction bracket (AC-CM8-PCB), and junction box (AC-CM-JBOX).How do I order the CM890I?Creation Networks is an authorized SoundTube dealer. Contact us for volume pricing and project support.