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FreeSpace
DS 40F
®
Loudspeaker
Engineers' and Architects'
Specifications
The loudspeaker shall be a 40-watt, ported
loudspeaker system utilizing one 4.5" (114mm)
full-range HVC (Helical Voice Coil) driver. The
loudspeaker shall be designed for installation
in ceilings up to 26ft (8.0m) high. An optional
pendant-mount accessory allows the loudspeaker
to be hung from open ceilings.
The loudspeaker shall have a nominal rated
impedance of 8 ohms and shall be wired in
parallel with a line voltage matching (step-down)
transformer with a level selector appropriate
for various output taps. The loudspeaker input
connections will allow for direct connection
to 70V, 100V or low-impedance amplifiers.
An 8 Ohm variant of the loudspeaker shall
be available without a transformer for low-
impedance applications only.
The loudspeaker shall have a protection circuit
to protect the product from occasionally being
overdriven.
Each loudspeaker shall have a bandwidth of
80 Hz – 16 kHz and a maximum acoustic output
of 103 dB-SPL referenced to a full bandwidth
pink noise input at 1 meter at the loudspeaker's
rated power. The input connection shall consist
of a three-position barrier connector. The input
connection of the 8 Ohm variant of the loud-
speaker shall consist of a two-position barrier
connector. The connector is designed to work
with 18 AWG (0.8mm
2
) to 14 AWG (2.0mm
size wire only.
Power settings available shall be: 2.5W, 5W,
10W, 20W, 40W @ 70V; 5W, 10W, 20W, 40W
@ 100V; and 40W @ 8Ω (when referenced to
IEC noise for 100 hours). The nominal dispersion
shall be 125° conical coverage pattern at -6 dB
(average 1 – 4 kHz).
The loudspeaker shall be plenum-rated for
use in air handling spaces. The loudspeaker
shall meet numerous standards for combination
music and evacuation systems around the world.
Exposed cosmetic surfaces of the loudspeaker
shall be paintable, and the acoustically transparent
grille component shall be formed of powder-
coated steel.
The loudspeaker shall be the Bose
DS 40F loudspeaker.
Safety and Regulatory Compliance
The FreeSpace DS 40F loudspeaker and
FreeSpace DS 40F loudspeaker – 8 Ohm have
passed extensive testing and comply with the
following specifications and uses:
Listed to ANSI/UL 1480-2005
• Fire Protective Signaling Use – UL
Category UUMW, File Number S 3241.
Control Number 42S9.
Not for use with DC-supervised systems.
• General-Purpose Use – UL Category UEAY,
File Number S 5591 Control Number 3N89.
• Suitable for use indoors in damp locations.
• Suitable for installation using Class 1, Class 2
or Class 3 wiring methods in accordance with
NFPA 70, National Electric Code, 2008,
Article 640.
• Suitable for use with fire alarm circuit wiring
methods in accordance with NFPA 70, National
Electric Code, 2008, Article 760.
• Suitable for use in air handling (plenum) spaces.
• UL-2043, Fire Test and Visible Smoke Release
for Discrete Products and their Accessories
Installed in Air Handling Spaces.
• NFPA 70, National Electric Code, 2008, Article
300-22 (c).
• NFPA 90-A, 2008, Installation of Air
Conditioning and Ventilation Systems,
Paragraph 4.3.11.2.6.5.
2
)
The DS 40F loudspeaker and DS 40F loudspeaker –
8 Ohm have been designed to the requirements
defined in the following European regulatory
specification for combination systems when
installed with an accessory ceramic terminal
and thermal fuse:
• British Standard Code of Practice BS 5839,
Part 8.
• Tested to IEC 60268-5.
More Information
Technical literature, warranty information and
other materials available at pro.Bose.com.
FreeSpace
®
®
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