Bose Professional FreeSpace DS 100F 040805 100W In-Ceiling Loudspeaker – White, Used Very Good

Deliver powerful, wide-coverage sound for commercial spaces with the Bose Professional FreeSpace DS 100F In-Ceiling Loudspeaker in White. Designed for foreground music and speech reproduction, the DS 100F combines a 5.25-inch woofer with a 2.25-inch Bose Twiddler® driver in a ported enclosure for high-output performance and broad coverage.

The speaker provides an exceptionally wide 160° conical coverage pattern and supports 70V, 100V, or 8-ohm operation, making it suitable for restaurants, retail stores, hospitality spaces, offices, fitness facilities, educational spaces, and other professional indoor audio installations.

This listing is for ONE Bose FreeSpace DS 100F loudspeaker.

Condition

Used – Very Good

This pre-owned Bose Professional FreeSpace DS 100F has been inspected and is in very good cosmetic and working condition. It may show minor signs of previous installation or use that do not affect normal performance.

Please review all actual product photographs carefully for the exact cosmetic condition and included components.

What's Included

• One Bose Professional FreeSpace DS 100F Loudspeaker
• White speaker grille

Tile bridge, pendant-mount kit, safety cable, speaker wire, amplifier, and other installation accessories are included only when specifically shown in the actual product photographs.

Key Features

• Professional Bose flush-mount in-ceiling loudspeaker
• 100W continuous long-term power handling
• 400W peak power handling
• One 5.25-inch woofer
• One 2.25-inch Twiddler® driver
• Wide 160° conical coverage pattern
• Frequency response: 75 Hz – 18 kHz ±3 dB
• Frequency range: 60 Hz – 20 kHz -10 dB
• 70V and 100V distributed-audio compatibility
• 8-ohm transformer-bypass operation
• Integrated multi-tap transformer
• Thumb-wheel transformer tap adjustment accessible below the grille
• Three integrated quick-install mounting arms
• Suitable for high ceilings up to approximately 32 feet
• Designed for foreground music and speech reproduction
• White finish

High-Output Commercial Sound

The FreeSpace DS 100F is designed for professional installations requiring higher output and extended frequency response.

A 5.25-inch woofer delivers extended low-frequency performance while the 2.25-inch Twiddler driver provides clear midrange and high-frequency reproduction for both music and speech.

160° Conical Coverage

The DS 100F provides approximately 160° conical coverage, helping distribute sound evenly over a wide listening area.

The wide dispersion pattern makes it particularly useful in commercial spaces where consistent coverage is needed without installing an excessive number of loudspeakers.

70V, 100V & 8-Ohm Operation

The integrated transformer allows the speaker to operate in distributed commercial audio systems or conventional low-impedance systems.

• 70V Transformer Taps: 12.5W, 25W, 50W, 100W
• 100V Transformer Taps: 25W, 50W, 100W
• Low-Impedance Mode: 8 ohms

The transformer tap can be adjusted using a convenient thumb-wheel control accessible from beneath the speaker grille.

Flush-Mount Ceiling Installation

The DS 100F uses three integrated quick-install mounting arms for secure flush mounting in compatible ceilings.

• Outer Flange Diameter: Approximately 11.8 inches
• Speaker Depth: Approximately 8.2 inches
• Required Ceiling Cutout: Approximately 10.5 inches diameter
• Maximum Ceiling Thickness: Approximately 1.5 inches

Indoor Commercial Applications

The FreeSpace DS 100F is designed for indoor use, including compatible damp indoor locations.

Typical applications include:

• Restaurants
• Retail stores
• Hotels and hospitality spaces
• Offices
• Fitness centers
• Educational facilities
• Conference rooms
• Commercial foreground music systems
• Paging and speech systems

Product Information

• Brand: Bose Professional
• Product: FreeSpace DS 100F
• Model: DS 100F
• Manufacturer Product Code: 040805
• Product Type: Commercial In-Ceiling Speaker
• Quantity: One Speaker
• Color: White
• Condition: Used – Very Good
• Speaker Type: Passive 2-Way Loudspeaker
• Woofer: 5.25 inches
• High-Frequency Driver: 2.25-inch Twiddler® driver
• Long-Term Power Handling: 100 watts
• Peak Power Handling: 400 watts
• Nominal Impedance: 8 ohms with transformer bypassed
• 70V / 100V Support: Yes
• Sensitivity: 85 dB SPL @ 1W / 1m
• Maximum SPL: 105 dB continuous / 111 dB peak
• Coverage: 160° conical
• Frequency Response: 75 Hz – 18 kHz ±3 dB
• Dimensions: 11.8-inch diameter × 8.2-inch depth
• Ceiling Cutout: Approximately 10.5-inch diameter
• Weight: Approximately 13 lb

Important Installation & Safety Information

The Bose FreeSpace DS 100F is a passive professional loudspeaker. It does not contain Bluetooth, Wi-Fi, a built-in amplifier, or smart-speaker functions.

A compatible amplifier, appropriate speaker wiring, and proper professional installation are required.

Use appropriate safety hardware and follow Bose Professional installation instructions and applicable local building codes.

Please review all actual product photographs carefully to confirm the condition and included installation components before purchasing.