SoundTube CM500i 5.25-Inch Coaxial In‑Ceiling Commercial Speaker

The SoundTube CM500i is a full-bandwidth, coaxial 5.25″ in‑ceiling speaker featuring SoundTube's BroadBeam® waveguide tweeter for consistent, wide coverage. The unit includes a ported backcan and a six-position transformer tap switch for 25/70.7/100V or 8Ω bypass operation, making it well-suited for background music and public announcement systems in commercial spaces.

A blind-mount, fixed-wing installation system supports ceiling thicknesses from 0.25″ to 1.91″. The speaker includes a magnetic steel grille and paint mask for a seamless finish. Certified to UL1480A and UL2043 standards, with CE and RoHS compliance.

With 75W RMS power handling (150W program), 86.5dB sensitivity, and a frequency range down to 55Hz, the CM500i delivers intelligibility and bass response for demanding settings.

Key Features

• Driver Configuration: Coaxial 2‑way – 5.25″ polypropylene woofer with butyl surround, 1″ convex titanium ferrofluid‑cooled tweeter with BroadBeam® waveguide
• Transformer Options: Internal six‑position rotary switch supports 25V, 70.7V, 100V taps and 8Ω bypass
• Power Handling: 75W RMS continuous, 150W program
• Sensitivity: 86.5dB @ 1W/1m and @ 2.83V/1m
• Frequency Response: 75Hz–22kHz (±3dB); 55Hz–22kHz (±10dB)
• Coverage Angle: ~95° at 2kHz, up to 125° at 10kHz (105° averaged) – consistent dispersion via BroadBeam®
• Mounting System: Blind‑mount constant‑tension fixed‑wing brackets, supports up to 1.91″ ceiling thickness
• Grille: Magnetic steel mesh, powder‑coated, paintable, includes safety cable and paint shield
• Enclosure Material: Drawn aluminum backcan with ABS baffle, ported for improved bass
• Certifications: UL1480A, UL2043, CE, RoHS
• Inputs: 4‑pin Euroblock connector for daisy‑chain wiring

Technical Specifications

• Woofer Driver: 5.25″ (133mm) polypropylene cone with butyl rubber surround
• Tweeter Driver: 1″ titanium convex dome with FerroFluid cooling and BroadBeam® waveguide
• Crossover Frequency: ~3kHz, 12dB/octave 2nd‑order
• Nominal Impedance: 8Ω
• Min Impedance: 4–4.7Ω
• Directivity Factor (Q): 4.8 (avg), Directivity Index (DI): 6.1dB; at 2kHz Q=9.5, DI=9.8dB
• Maximum SPL: 105.5dB @ 1m
• Frequency Response: 75Hz–22kHz (–3dB), 55Hz–22kHz (–10dB)
• Enclosure Dimensions: Backcan diameter 8.63″ (219.2mm), depth 7.75″ (196.9mm); grille diameter 10.71″ (272mm), grille height 0.96″ (24.4mm)
• Cutout Diameter: ~8.50″ (≈216mm)
• Ceiling Thickness Range: 0.25″–1.91″ (6.4–48.5mm)

What's Included

• One CM500i in‑ceiling speaker unit (Black or White)
• Magnetic steel grille with safety cable
• Tile bridge (for drop‑ceiling installations)
• Conduit plate
• 4‑pin Euroblock connector
• Paint mask / shield