BOSE FreeSpace DS 40F Flush Mount In-Ceiling Install Loudspeaker - White

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FreeSpace DS40F Install Loudspeaker at EMI Audio

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.




Full-range loudspeaker with a single 114 mm (4.5”) 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.

Integrated multi-tap transformer with innovative thumb wheel adjustment for easy-to-change tap setting from underneath the loudspeaker grille.

Shortcan design allows installation in shallower ceilings with minimum depth of 153 mm (6.0”).

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.


Technical Specifications

System Performance
Frequency Response (+/–3 dB): 1 80 Hz to 17 kHz
Frequency Range (–10 dB): 1 70 Hz to 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: 2 40 W (160 W peak)
Sensitivity (SPL / 1 W @ 1 m): 3 87 dB SPL
Maximum SPL @ 1 m 4 103 dB SPL (109 dB SPL peak)
Nominal Impedance: 8 Ω (transformer bypassed)
Transformer Taps: (70/100 V) 70 V: 2.5 W, 5 W, 10 W, 20 W, 40 W
100 V: 5 W, 10 W, 20 W, 40 W

Driver Complement 114 mm (4.5”) full-range driver

Enclosure: Engineered plastics (paintable), powder-coated steel (rear enclosure)
Grille: Powder-coated steel grille (paintable)
Environmental: Indoor use only
Connectors: Three-terminal barrier strip; two-terminal barrier strip (8 Ω variant) 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 updated quick-install mounting arms
Three mounting points at the rear of the enclosure for use with optional accessory pendant mount kit
Safety cable attachment: 8.9 mm (.35”) diameter hole on junction box
Dimensions (H × W × D) Outer flange diameter: 300 mm (11.8”)
Depth: 153 mm (6.0”)
Ceiling hole diameter: 267 mm (10.5”)
Maximum Ceiling Thickness: 39 mm (1.5”)
Net Weight: 3.6 kg (8.0 lb) - with transformer 2.7 kg (5.9 lb) - 8 Ω variant
Shipping Weight: 4.9 kg (10.7 lb) - with transformer 3.8 kg (8.7 lb) - 8 Ω variant
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