[. . . ] MIS8C Paging and Public Address Loudspeaker General Description: The University Sound MIS8C is a conservatively rated 10watt reflex paging projector designed for flush-mounting. [. . . ] Six holes around a 4. 87 in (12. 4cm) diameter circle provide a means for fluch mounting the speaker. When frequencies below the low-frequency cutoff for the horn assembly are fed to the driver, excessive current may be drawn by the driver. For protection of the driver and amplifier, capacitor in series with driver is recommended. For drivers without transformers: 8-ohm driver, 25V - 100 mf 4-ohm driver, 25V - 200 mf 150V dc or 150V non-polarized electrolytic, or two 150V electrolytics of two times required value in series, back to back, for 70V lines. Technical Specifications: Freq. Response: 900 - 6, 300 Hz +/-5 dB Power Handling, 8 Hours, 10 watts (500 - 5, 000 Hz pink noise) 6 dB Crest Factor: Impedance, Nominal: 8 ohms SPL, Input Average, Pink 101 dB (1 watt@1m) Noise Band-Limited from 500 - 5, 000 Hz: Dispersion, 6 dB-Down 100° @ 2 kHz 2 kHz Octave Band of Random Noise: Directivity Factor (Q): 7. 0 @ 2 kHz Usable Low-Frequency 550 Hz Limit: Construction: Horn and Housing in Gray Polycarbonate and Reflector in ABS. (1. 90cm) Magnet Weight: 0. 39 lb (0. 18 kg) Architectural & Engineering Specs: The loudspeaker shall be an integral driver and loudspeaker utilizing a rugged phenolic diaphragm and high-temperature rated 0. 75-inch voice coil. Sound pressure level will be 101 dB (1W/1M) with a 500 - 5, 000 Hz pink noise signal applied, and the horn will produce a dispersion angle of 100° at 2. 0 kHz. The loudspeaker shall be capable of handling a 10 watt, 500 - 5, 000 Hz pink noise signal for a period of eight hours. [. . . ] For customer orders, contact Customer Service at: + 1 952 884-4051 Fax: + 1 952 736-4212 For warranty repair or service information, contact the Service Repair department at: 800/685-2606 For technical assistance, contact Technical Support at: 866/78AUDIO Specifications subject to change without notice. [. . . ]