Specification Sheet
3
Ultra-Compact 10-Watt, 4" Ceiling Loudspeaker Assembly
ST2400NANO
Summary Description: The loudspeaker shall be of the in-ceiling type, with a 4" (102mm) low-frequency transducer,
awaveguide-mounted 0.5" (13 mm) high-frequency transducer and an internal crossover installed in a ported enclosure.
Performance specications shall be as follows: Measuredsensitivity at least 86 dB-SPL at 1 m (3.3feet) with 2.83 V input,
averaged from 100 Hz to 10 kHz). Usablefrequency response shall extend from 80 Hz - 21kHz (10 dB below rated sensitivity
in half-space) withno external equalization. Rated power shall be at least 10watts continuous pink noise power, denedas
conforming to international standard IEC268-5 (shapedpink noise with peak-to-average ratio of 6 dB) for a period of
100continuous hours. The high-frequency transducer shall be waveguide-loaded to cover a minimum 150° polar conical
coverage area.
Enclosure: The back can shall be made of formed steel with a waveguide/bae of UL94V-0 re rated medium impact
polystyrene and enclosed terminal box shall be included with strain relief for use with either plenum-rated wire, 0.5"(13 mm)
inside diameter conduit, or exible conduit up to 0.75" (19 mm) outside diameter. External wiring shall be accomplished via
a removable lockable wiring connector with screw-down terminals to provide both secure wire termination and prewiring
capability. Secondary cabling to building structure support shall be provided via an attachment loop on the back panel.
Mounting: The system shall include a backing plate to reinforce the ceiling material plus tile support rails for 2 x 4 foot
(600 x 1200 mm) suspended ceiling tiles, all to be installable from beneath the ceiling tile. Overall front face diameter shall not
exceed 7.9" (201 mm), overall depth from the bottom of the ceiling shall not exceed 5.81" (148mm), andshall weigh no more
than 4.84 lbs / 2.20 kg.
Electrical: Nominal impedance shall be 8 Ω. The loudspeaker shall be equipped with transformer for use in either 70 or 100 V
distributed-line speaker systems, with taps selectable by rotary switch accessed by removing the speaker grille. Taps shall be
10 W @ 70 V, 5 W @ 70 V (10W @ 100 V), 2.5 W @ 70 V (5 W @ 100 V), and 1.25 W @ 70 V (2.5 W @ 100 V).
Model: The loudspeaker shall be the BEHRINGER EUROCOMST2400NANO.
Architect’s and Engineer’s Specications