Bose FreeSpace DS 40F
4.5" Full-Range 8 Ohm Ceiling Loudspeaker in Black


The Bose FreeSpace DS 40F is the most versatile member of the DS loudspeaker family.
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The Bose FreeSpace DS 40F is the most versatile member of the DS loudspeaker family. It is a high-performance, full-range, flushmount loudspeaker designed for foreground and background music and speech reproduction in a wide range of installed applications. The DS 40F features high output and 125° conical pattern with a frequency range down to 70 Hz.

Bose FreeSpace DS 40F Features:

  • Full-range loudspeaker with a single 4.5" (114 mm) driver in a ported enclosure to deliver a 125° conical coverage pattern and clear, intelligible music and speech reproduction for flush-ceiling or pendant mount applications
  • Shortcan design allows installation in shallower ceilings with minimum depth of 6.4" (163 mm)
  • Shared voicing across entire FreeSpace DS product family enables DS 16, DS 40 and DS 100 loudspeakers to be integrated on the same system and maintain consistent tonal quality
  • Supported by a suite of accessories, including ceiling-mount bracket, adjustable tile bridge, pendant-mount kit and square grille

Bose FreeSpace DS 40F Specifications:

  • System Performance:
    • Frequency Response (±3dB):  80 Hz - 17 kHz
    • Frequency Range (-10dB):  70 Hz - 19 kHz
    • Nominal Dispersion:  125° conical
    • Recommended High-Pass Filter:  70 Hz high-pass filter
    • Loudspeaker EQ:  Recommended
    • Overload Protection:  PTC/Resistor
    • Long-Term Power Handling:  40 W (160 W peak)
    • Sensitivity (SPL / 1 W @ 1 m):  87dB SPL
    • Maximum SPL @ 1 m:  103 dB SPL (109 dB SPL peak)
    • Nominal Impedance:  8 Ohms
  • Transducers:  4.5" (114mm) full-range driver
  • Physical:
    • Enclosure:  Polypropylene (front baffle), powder-coated steel (rear enclosure)
    • Grille:  Powder-coated steel grille
    • Color:  Black
    • Environmental:  Indoor use only
    • Connectors:  Two-terminal barrier strip; Optional accessory available for use when ceramic connector and thermal fuse are required. Wire gauge: 18 AWG (0.8 mm) to 14 AWG (2.0 mm)
    • Suspension / Mounting:  Three integrated quick-install mounting arms. Three mounting points at the rear of the enclosure for use with optional accessory pendant mount kit. Safety cable attachment: 0.35" (8.9mm) diameter hole on junction box
    • Dimensions:
      • Outer Flange Diameter:  11.8" (300mm)
      • Depth:  6.0" (153mm)
      • Ceiling Hole Diameter:  10.5" (267mm)
    • Ceiling Thickness (Maximum):  2.5" (64 mm)
    • Net Weight:  6.3 lb (2.8 kg)

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