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Manafacture: Altec Lansing File size: 586.1 kb File name: 7358a13a-0c66-47e9-9c4b-db0d2c77c86e.pdf Language of manual:

Such conditions are fulfilled with high efficiency and uniform response from 1200 Hz (902-8A, 902-16A) or 500 Hz (902-8T) to 20,000 Hz. These drivers furnish the realistic sound production demanded by theatres and music halls, portable concert sound systems and playback systems when used in conjunction with Altec 51 IB (500 Hz), 811B (800 Hz), or MR931-12 (1200 Hz) horns, appropriate Altec dividing networks and Altec professional low frequency loudspeakers. Each 902-type driver uses a voice coil of 13A-inch diameter, edge wound with aluminum ribbon and coupled to an aluminum tangential diaphragm. The entire diaphragm and voice coil assembly is field replaceable; no special tools are required. The 902-8A (8 ohms) and the 902-16A (16 ohms) are designed to operate at a crossover frequency of 1200 Hz. The 902-8T (8 ohms) is fitted with a loading cap to operate at crossover frequencies down to 500 Hz. Altec's new Tangerine® radial phase plug* refines the technology of proper phasing, ensuring maximum high frequency reproduction while maintaining smooth overall response. The drivers are capable of uniform, peak-free reproduction throughout the range of human hearing. Frequency Response: 902-8A, 902-16A— 902-8T— Pressure Sensitivity: Minimum Impedance: Construction: Magnet— Flux Density— Magnetic Structure Weight— Diaphragm— Voice Coil— Dimensions: Weight: Finish: Mounting Data: 10 watts continuous pink noise from 1200 Hz to 20 kHz (902-8A, 902-16A) or from 500 Hz to 20 kHz (902-8T). Measurements made on Altec 511 B horn. 1200 Hz to 20 kHz 500 Hz to 20 kHz 104 dB SPL measured 4' from mouth of Altec 511B horn with 1 watt input of pink noise, band limited from 1200 Hz-5000 Hz 8 ohms (902-8A, 902-8T) 16 ohms (902-16A) Ferrite, 40 ounces 18,000 gauss 5% lbs. (2.61 kg) Aluminum tangential Edgewound aluminum ribbon 51/2" (13.97 cm) diameter 25/8" (6.67 cm) deep, less mounting studs 6 lbs., 6 oz. (2.90 kg) Gray ''Hammertone'' enamel with black rubber boot Two y4"-24 x 1" studs, 180° apart on 1 Vi" centers V *Reg. U.S. Patent No. 4,050,541; Foreign patents pending. Top Bottom 2.60" (6.60cm) ARCHITECT'S AND ENGINEER'S SPECIFICATIONS The compression driver loudspeaker shall meet the following criteria. Power capacity; 10 watts continuous pink noise, band-limited from 1200 Hz to 20 kHz (902-8A, 902-16A), and from 500 to 20 kHz (902-8T), measured on Altec 511B horn. Frequency response, uniform from 1200 Hz to 20 kHz (902-8A, 902-16A), and from 500 Hz to 20 kHz (902-8T). Pressure sensitivity; 104 dB SPL measured at 4' from mouth of Altec 51 IB horn with 1 watt input of pink noise, band-limited from 1200 Hz to 5 kHz. The voice coil shall be of edgewound aluminum ribbon and shall operate in a magnetic gap having a flux density of 18,000 gauss derived from a 40-ounce Ferrite V magnet. The diaphragm shall be an aluminum tangential. A Tangerine® phasing plug with 13 radial acoustic slots shall be utilized to provide the proper phase re...

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