The CIS991 ceiling loudspeaker features a powerful 3-way design that provides exceptional performance, especially in high ceiling, large-space applications. The CIS991 (80-degree by 80-degree dispersion) incorporates four 5.25-inch LF cone woofers, four 4-inch MF cone woofers and a 1-inch-exit HF compression driver mounted on a large horn that fosters superior pattern control. The CIS991 is supplied with an integral 70V/100V line transformer, rated to a maximum of 128 watts. Tap settings are adjustable by means of a recessed rotary switch on the front bezel that allows selection of 128-, 64-, 32-, and 16-watt taps at 70 volts, and 128-, 64-, and 32-watt taps at 100 volts. In addition, the transformer can be bypassed, presenting an 8-ohm load to low-impedance systems. A sealed, painted, 18-gauge steel back can is included, and designed to mount in a 24-inch ceiling grid. The back can includes a recessed Euroblock input connector, with detachable mating plug, concealed behind a hinged metal cover plate. Mounting is accomplished using the integral eyebolts on the rear to suspend the loudspeaker with optional, adjustable, wire rope rigging.

	Operating Mode Passive Operating Range 82 Hz to 20 kHz Beamwidth 80° (h) x 80° (v) Power Handling/Output 200 W (passive)/115 dB (Average) Connections 2 input terminal; 2 loop-thru output terminal Rigging/Mounting 4 mounting/suspension points Dimensions/Weight 22.6"x22.6"x9.05"/48lbs