User manual ALTEC LANSING 4156-8A LF SPEAKER

[. . . ] PROFE S S IONA l FREQUENCY RESPONSE 27 Hz - 3. 4 kHz SENSITIVITY 99 dB SPL POWER HANDLING 4 3 1, 2 4156-8A High Performance 15" Low Frequency Speaker 250 W continuous; 1, 000 W peak MAXIMUM OUTPUT (1 m) IMPEDANCE Nominal: Minimum: 1% rated power 7 5 123 dB SPL continuous; 129 dB SPL peak 8. 0 Ohms 6. 5 Ohms at 160 Hz 8 HARMONIC DISTORTION 10% rated power 0. 57% 0. 54% 0. 91% 2nd Harmonic 3rd Harmonic THD 2. 25% 0. 94% 2. 49% FEATURES - THE ALTEC LANSING DIFFERENCE · High Performance 250W AES / 1, 000W Peak Power Handling · Designed For Direct Radiator Vented Cabinets · Linear Low Frequency Reproduction · High Efficiency 2nd Harmonic 3rd Harmonic THD INPUT CONNECTIONS 1 x 2 position barrier strip with 0. 250 in. blades DIMENSIONS Outside Diameter: Bolt Circle Diameter: Cut-out Diameter Front Mount: Rear Mount: Depth: WEIGHT Net: Shipping: Re fs Qts Qms Qes Vas Sd Xmax Vd Le 21 lbs. [. . . ] The loudspeaker shall have an operating bandwidth of 27 Hz - 3. 4 kHz with a sensitivity of 99 dB when measured at a distance of one meter. Nominal impedance shall be 8 ohms with a minimum impedance of 6. 5 ohms at 160 Hz. The dimensions shall be 15. 875 inches (403 mm) in diameter by 6. 625 inches (168 mm) deep. The loudspeaker shall be the Altec Lansing Professional model 4156-8A. FREQUENCY RESPONSE IMPEDANCE As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice. Please visit www. altecpro. com for the latest information on Altec Lansing Professional products. SPECIFICATION NOTES 1 The frequency response of the loudspeaker 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. 83 V 1 m measurement. A near field measurement of the loudspeaker 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 -10 dB of the loudspeakers rated sensitivity. 3 The sensitivity of the loudspeaker is the log based average SPL taken over the intended bandwidth of operation for the loudspeaker with a 2. 83 V swept sine stimulus. [. . . ] · One paragraph A&E Specifications in . doc format PROFE S S IONA l © 2003 Altec Lansing Professional 1000 W. Wilshire Blvd. , Suite 362 Oklahoma City, Oklahoma 73116 Phone: 1-405-848-3108 · Fax: 1-405-848-3217 Web: www. altecpro. com · Email: proinfo@alteclansing. com AW1078 REV02 [. . . ]