Soundtube CM800I 8" In Ceiling Speaker with a BroadBeam Tweeter

SoundTube CM800I 8" In-Ceiling Speaker with BroadBeam Tweeter

The SoundTube CM800I is a high-output 8-inch in-ceiling speaker purpose-built for large commercial spaces demanding maximum coverage area, high SPL, and consistent intelligibility. Powered by SoundTube's patented BroadBeam Ring waveguide technology, the CM800I produces a 110-degree wide dispersion at 2 kHz — one of the broadest patterns in the in-ceiling speaker category — minimizing speaker count in hotel ballrooms, large retail spaces, and airport gate areas while maintaining strong off-axis intelligibility at every seat in the room.

The CM800I combines an 8-inch polypropylene woofer with a butyl rubber surround and a 1-inch convex titanium BroadBeam tweeter with FerroFluid cooling, crossing over at 3.0 kHz for a smooth, high-SPL acoustic response. At 90 dB sensitivity and 125W RMS power handling, the CM800I drives significantly louder than most in-ceiling competitors at the same amplifier power level. The fixed-wing rapid-mount mechanism and tool-free magnetic grille with integrated safety cable simplify installation and servicing across large deployments. Certified UL 1480 (UEAY) and UL 2043 for plenum and life-safety applications.

Creation Networks provides SoundTube CMi in-ceiling system design with coverage modeling, amplifier sizing, and quantity project pricing — contact us for a consultation.

Key Features

• Patented BroadBeam Ring Waveguide — 110-degree dispersion at 2 kHz provides maximum area coverage per speaker, reducing total speaker count and installation cost.
• 1" Convex Titanium Tweeter with FerroFluid — Titanium dome with liquid cooling maintains accuracy and durability at high sustained power levels.
• 8" Polypropylene Woofer — High-excursion polypropylene cone with butyl rubber surround handles 125W RMS for powerful output in large commercial spaces.
• 90 dB Average Sensitivity — Among the highest in-ceiling sensitivity ratings available, extending coverage range and reducing amplifier cost per zone.
• Six-Position Tap Switch — Onboard rotary switch selects 25V, 70.7V, or 100V transformer operation, or 8-ohm direct bypass for maximum flexibility.
• Rapid Fixed-Wing Mounting — Constant-tension fixed-wing design installs in ceilings 0.25"–1.91" thick without additional hardware or special tools.
• Tool-Free Magnetic Grille — Steel grille detaches without tools for field painting and easy tile or ceiling replacement access.
• UL 1480 and UL 2043 Listed — Approved for plenum ceiling installation and life-safety audio in North American commercial projects.

Typical Applications

• Hotel ballrooms, conference centers, and event spaces
• Large-format retail and big-box stores
• Airport gate areas and terminal concourses
• Houses of worship with wide nave layouts
• Corporate training rooms and auditoriums
• Food courts, dining halls, and large restaurant spaces

Technical Specifications

Frequently Asked Questions

How does the CM800I compare to the CM600I?

The CM800I uses an 8-inch woofer with a titanium BroadBeam Ring tweeter, delivering 90 dB sensitivity, 110-degree coverage, and 125W RMS — making it the preferred choice for large spaces requiring higher output and broader coverage. The CM600I (6.5-inch, aluminum tweeter, 88 dB) suits medium commercial spaces with a smaller ceiling cutout.

Does the CM800I support 70V distributed audio?

Yes. The built-in six-position rotary tap switch selects 25V, 70.7V, or 100V line modes directly on the speaker without an external transformer, with maximum tap settings of 9W, 66W, and 66W respectively.

What ceiling thickness range is supported?

The fixed-wing rapid mount accepts ceiling thicknesses from 0.25 inch (6.4 mm) to 1.91 inches (48.5 mm), covering the full range of standard commercial ceiling tile and drywall thicknesses.

Is a pre-construction bracket available?

Yes — the optional AC-CM8-PCB pre-construction bracket is available for new construction rough-in. The standard package includes tile bridge, conduit plate, Euroblock connector, and paint mask.

Is the CM800I UL listed for plenum ceiling installation?

Yes. UL 2043 listing qualifies the CM800I for air-handling plenum ceiling spaces in North American commercial construction code compliance.

What is the recommended room coverage spacing?

At standard 10-foot commercial ceilings, spacing of approximately 12–15 feet between CM800I speakers is typical for commercial background music applications. For voice reinforcement or higher SPL requirements, tighter spacing or coverage modeling is recommended. Contact Creation Networks for a layout.