User manual ALTEC LANSING 291-8L HF DRIVER

[. . . ] (11. 8 kg) 5. 6 Ohms 29. 0 Hz 0. 280 2. 91 0. 310 353. 7 liters (12. 49 ft. 3) 850. 0 cm2 (131. 75 in. 2) 4. 3 mm (0. 17 in. ) 365. 5 cm3 (22. 30 in. 3) 1. 05 mH 2. 72% 17. 1 Tm 87. 3 g 350 µm/N 14. 375 in. (383 mm) GENERAL PRODUCT DESCRIPTION The 4156-8A is the latest in a 60 year Altec Lansing tradition of quality loudspeaker components. [. . . ] High power, high efficiency and linear response make this 15" (381 mm) transducer a very capable low frequency component for conventional cluster designs or subwoofers. Possibly the most celebrated legacy of Altec Lansing is dependability. The 4156-8A loudspeaker is constructed from a reinforced corrosion-resistant die-cast frame, a rugged ferrite magnet structure, and a weather-resistant cone. The 4156-8A loudspeaker is designed for direct radiator vented enclosures. An internal enclosure volume of just under 4 cubic feet (113 liters) is all that is required for the 4156-8A loudspeaker to provide 3 dB down frequency response to 50 Hz. Installation of this low frequency loudspeaker is made simple with 0. 25 inch (6 mm) blade type wire terminals on a two position barrier strip, allowing bare wire leads, solder connections or crimp type quickconnect wire terminals. The Altec Lansing model 4156-8A is an excellent component for custom subwoofers and a perfect complement to our high frequency compression drivers when the requirements are high power capability, linear low frequency response, high acoustic output level, and absolute reliability. THEILE-SMALL PARAMETERS: 0 Bl Mms Cms 1000 W. 4 The power handling capacity of the loudspeaker is tested using AES Standard 2-1984. The test stimulus is band limited (30 Hz ­ 300 Hz) pink noise with a 6 dB crest factor. The applied RMS voltage is determined using the minimum impedance of the loudspeaker. The amplifier used to drive the loudspeaker has a minimum operating headroom of 6 dB referenced to the RMS voltage. 5 The maximum output level of the loudspeaker is calculated based on the sensitivity and the power handling capabilities of the system. 7 The minimum impedance of the loudspeaker is taken over its intended band of operation. 8 The distortion measurements of the loudspeaker are performed at a distance of 1 m with RMS input voltages corresponding to 1% and 10% of rated power handling calculated using minimum loudspeaker impedance. [. . . ] 8 The distortion measurements of the loudspeaker are performed at a distance of 1 m with RMS input voltages corresponding to 1% and 10% of rated power handling calculated using minimum loudspeaker impedance. The distortion percentages are log based averages from 50 Hz ­ 1 kHz. VISIT WWW. ALTECPRO. COM FOR · Authorized EASE data on all Altec Lansing Professional loudspeakers · Specification sheets in . pdf format. [. . . ]