SoundTube CM600i 6.5-Inch Two‑Way In‑Ceiling Speaker

The SoundTube CM600i is a high‑output, two‑way 6.5″ in‑ceiling speaker with patented BroadBeam® waveguide tweeter technology, designed for clear coverage and intelligibility in commercial background-to-foreground audio installations. It is available in both black (CM600i‑BK) or white (CM600i‑WH), with paintable magnetic grille assemblies.

Featuring a polypropylene woofer and 1″ convex tweeter with ferrofluid cooling, plus a cast‑aluminum motor‑board heat sink, this speaker supports transformer taps for 25 V, 70.7 V, and 100 V systems or direct 8 Ω bypass. With 88 dB sensitivity and up to 90 W RMS / 180 W program power, it delivers high SPL performance suitable for large venue coverage.

Key Features

• Driver complement: 6.5″ polypropylene woofer with butyl rubber surround; 1.0″ convex aluminum BroadBeam® tweeter with ferrofluid cooling
• Transformer taps: 25 V / 70.7 V / 100 V selectable via six‑position rotary switch; transformer bypass for direct 8 Ω input
• Sensitivity: ~88 dB @ 1 W/1 m (and @ 2.83 V/1 m)
• Frequency response: 69 Hz–22 kHz (±3 dB); 52 Hz–22 kHz (±10 dB)
• Power handling: 90 W RMS continuous; 180 W program
• Max SPL: ~107.5 dB @ 1 m (based on continuous power)
• Coverage angle: ~135° (±6 dB @ 2 kHz)
• Mounting system: Blind‑mount fixed‑wing SpeedWing™, fits ceiling thickness 0.25″–1.91″
• Grille: Magnetic powder‑coated steel flange (black or white), paintable; safety tether attached
• Enclosure: ABS, cast aluminum motor‑board, ported for enhanced low end
• Certifications: UL 1480, UL 2043, CE, RoHS compliant
• Color options: CM600i‑BK (black); CM600i‑WH (white)

Technical Specifications

• Frequency Response (±3 dB): 69 Hz–22 kHz
• Frequency Response (±10 dB): 52 Hz–22 kHz
• Sensitivity: 88 dB @ 1 W/1 m; 88 dB @ 2.83 V/1 m
• Crossover Frequency: ~3.0 kHz (2nd-order, 12 dB/octave)
• Nominal Impedance: 8 Ω
• Minimum Impedance: ~5.3 Ω under load
• Directivity Factor (Q): 4 (avg), 5.4 (@2 kHz)
• Directivity Index (DI): 5.6 dB (avg), 7.3 dB (@2 kHz)
• Coverage Angle (±6 dB): ~135° @ 2 kHz
• Backcan Dimensions: 11.68″ × 7.94″ (29.67 cm × 20.17 cm)
• Visible Dimensions: 14.76″ × 1.08″ (37.49 cm × 2.74 cm)
• Cutout Diameter: 12.75″ (32.39 cm)
• Ceiling Thickness Support: 0.25″–1.91″ (6.4 mm–48.5 mm)
• Weight: ~10.1 lbs (4.6 kg)
• Shipping Weight: ~15 lbs (6.8 kg)

What's Included

• Magnetic steel grille and bezel (color-matched or black/white option)
• Tile bridge for T-bar ceilings
• Euroblock input connector
• Paint mask
• Conduit plate