User manual ALTEC LANSING LF215-4A LF SPEAKER SYSTEM

[. . . ] The LF215-4A has been designed to provide extended low frequency performance in Auditoriums, Performing Arts Centers, Houses of Worship, or any facility requiring low frequency reinforcement for full-range music reproduction. Two of the Altec model 4156-8A 15" / 380mm woofers are used in the LF215-4A. [. . . ] Nominal impedance shall be 4. 0 ohms with a minimum impedance of 3. 5 ohms at 41 Hz. The unit shall be a trapezoid enclosure constructed of 18 mm birch plywood with a cloth covered metal grille. The cabinet shall include integral steel-reinforced suspension points. Forged shoulder machinery eye bolts shall be included to facilitate the suspension of the speaker system. The dimensions shall be 37. 50 inches (953 mm) high by 24. 13 inches (613 mm) wide by 26. 13 inches (664 mm) deep. The loudspeaker system shall be the Altec Lansing Professional model LF215-4A. Altec Lansing Professional Oklahoma City, OK 73116 LF215-4A A division of Altec Lansing Technologies, Inc. , Milford, PA 18337-0277 · Made in China PARALLEL MODE SPLIT + INPUT PARALLEL MODE 4 OHMS - + - PIN 1 PIN 1 + - SPLIT MODE 2x 8 OHMS PARALLEL MODE TOP DRIVER SPLIT MODE BOTTOM DRIVER SPLIT MODE PARALLEL MODE TOP DRIVER SPLIT MODE PIN 2 PIN 2 + - BOTTOM DRIVER SPLIT MODE + - + - As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice. Please visit www. altecpro. com for the lastest information on Altec Lansing Professional products. MOUNTING DIMENSIONS 26. 10 [663. 05] 16. 19 [411. 26] 1. 71 [43. 40] 6. 33 [160. 76] 18. 70 [475. 02] 6. 65 [169. 01] 37. 40 [950. 00] 9. 47 [240. 47] 10. 10 [256. 65] 5. 1 [128. 33] 1. 7 [43. 40] 26. 11 [663. 28] DENOTES CENTER OF MASS DIMENSIONS ARE IN INCHES. DIMENSIONS SHOWN IN ( ) PARENTHESES ARE IN MILLIMETERS. 16. 64 [422. 71] 7. 56 [192. 14] 15 11. 9 [301. 51] 9. 47 [240. 47] 24. 1 [612. 10] SPECIFICATION NOTES 1 The frequency response of the loudspeaker system is measured at a distance of no less than 3 meters to obtain full range data. The level is then corrected to be equivalent to a 2. 0 V 1 m measurement. A near field measurement of the loudspeaker system is performed for frequencies below 500 Hz. This data is then combined with the full range measurement to give an accurate composite frequency response curve. 2 The limits of the frequency response are referenced to -3 dB of the systems rated sensitivity. [. . . ] Use only the correct mating hardware, forged shoulder machinery eye bolt, Mil Spec MIL 51937-3. All associated rigging is the responsibility of others. VISIT WWW. ALTECPRO. COM FOR · Authorized EASE® data on Altec Lansing Professional speakers. [. . . ]