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The Bose FreeSpace DS40F is a premium in-ceiling speaker delivering clear, intelligible music and speech reproduction for both commercial and residential settings. Its shallow design and versatile mounting options make it perfect for flush-ceiling or pendant installations. Key Features Full-range loudspeaker with a single 4.5" (114 mm) driver in a ported enclosure providing a 125° conical coverage pattern Integrated multi-tap transformer with thumb wheel adjustment for easy tap setting changes from beneath the grille Shortcan design enables installation in ceilings with a minimum depth of 6.4" (163 mm) Consistent tonal quality with shared voicing across the FreeSpace DS product family (DS 16, DS 40, DS 100) Supported by accessories including ceiling-mount bracket, adjustable tile bridge, pendant-mount kit, and square grille Specifications Enclosure: Polypropylene (front baffle), powder-coated steel (rear enclosure) Environmental: Indoor use only Connectors: Three-terminal barrier strip; two-terminal barrier strip (8 ohm variant). Optional ceramic connector and thermal fuse accessory. Wire gauge: 18 AWG (0.8 mm) to 14 AWG (2.0 mm) Suspension / Mounting: Three integrated quick-install mounting arms; three mounting points for optional pendant mount kit; safety cable attachment hole (8.9 mm diameter) Dimensions: Outer flange diameter 11.8" (300 mm); Depth 6.0" (153 mm); Ceiling hole diameter 10.5" (267 mm) Net Weight: 8.3 lb (3.7 kg) with transformer Colour Options: Black, White, Paintable Frequency Response (+/-3 dB): 80 Hz - 17 kHz Frequency Range (-10 dB): 70 Hz - 19 kHz Nominal Dispersion: 125° conical Long-Term Power Handling: 40 W (160 W peak) Sensitivity (SPL / 1 W @ 1 m): 87 dB SPL Maximum SPL @ 1 m: 103 dB SPL (109 dB SPL peak) Nominal Impedance: 8 Ω (transformer bypassed) What's in the Box 1 x Bose FreeSpace DS40F loudspeaker