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.
Key Features
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”)

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 ? (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
Transducers
Driver Complement 114 mm (4.5”) full-range driver
Physical
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 ? 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 ? variant
Shipping Weight 4.9 kg (10.7 lb) - with transformer 3.8 kg (8.7 lb) - 8 ? variant
Product codes
Black/Grey White
DS 40F Loudspeaker 321278-0131 321278-0231
DS 40F Loudspeaker - 8 ? 321278-0141 321278-0241
DS 40F Loudspeaker - VA N/A 321278-0251
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