ARCHITECTS AND ENGINEERS SPECIFICATION FM1
The loudspeaker shall be a full-range device, producing frequencies from 80 Hz to 15 kHz in both horizontal and vertical planes. Total radiating surface shall be 85.5 sq. in. (532.3 sq. cm.). The high-frequency dispersion shall be at least 140ø up to 15 kHz in both horizontal and vertical planes. The loudspeaker shall have a sensitivity of 94 dB 1ÿWatt/1m, with a power rating of 8 watts RMS according to EIA standard RS-426-A.
The loudspeaker shall have an exterior frame constructed of stamped steel, with a powder-coated white enamel finish, measuring 11.75 in. (29.8 cm.) in diameter and a total unit depth of 7.50 in. (19.0 cm.) - including the Integrated Backbox-. Mounting facilities shall be of the FastMountT type. The complete unit shall weigh no more than 6.3 lbs. (2.86 kg.).

The loudspeaker shall be the SOUND ADVANCE FM1 or equivalent.