Altec Lansing 416-8B User's Manual
Contents
1. ALTEC LANSING DESCRIPTION The ALTEC 416 8B is a 16 low frequency loud speaker of professional quality that is ideal for use in wide range sound reinforcement and high fidelity systems Performance is charac terized by smooth response with extraordinary linearity A structurally reinforced frame rigid enough to permit front or rear mounting supports a heavy permanent magnet providing high flux density The low mass voice coil is made from edge wound copper ribbon to provide more turns of wire in the voice coil gap The cone suspension has exceptionally high compliance for accurate reproduction of low frequencies The 416 8B loudspeaker complements a wide selection of ALTEC designed enclosures 416 8B LOW FREQUENCY SPECIFICATIONS Frame Diameter Power Rating Frequency Response Hz Pressure Sensitivity 1 watt E Z min with pink noise band limited 100 1000 Hz Maximum Sound Pressure Full power E Z min with pink noise band limited 100 1000 Hz Impedance Maximum Excursion Before Damage Peak to Peak Voice Coil Diameter Thiele Small Parameters Free Air Resonance f Equivalent Volume Compliance Vs Total Q Qs Electrical Q Qes Mechanical Q Qus LOUDSPEAKER 16 150 watts program material 75 watts continuous pink noise band limited 30 1600 98 dB at 1 meter 117 dB at 1 meter 8 ohms minimum 3in 24 Hz 22 9 ft 23 24 62. 4 Reference Efficiency mo D C Resistance R Peak Linear Displacement Xmax Peak Linear Volume Displacement Vp Effective Surface Area of Driver Diagram Sp Additional Parameters Effective Piston Diameter Voice Coil Inductance BL Factor Magnet Type Magnet Weight Flux Density Mounting Information Baffle Opening Diameter Mounting Bolt Circle Diameter Loudspeaker Depth front mounting Loudspeaker Depth rear mounting Weight 12 75 in 2 5mH 16 0 Alnico 39 oz 11 Tesla 14 35 87 cm 15 38 1 cm 6 15 88 cm 7 17 78 cm 17 5 Ibs 7 94 kg AES power rating measured E Z min where E 25V Z 80 band limited 40 400 Hz AES Recommended Practice Specification of Loudspeaker Compo nents Used in Professional Audio and Sound Reinforcement See J Audio Eng Soc Vol 30 No 3 1982 March LOUDSPEAKER MOUNTING DIMENSIONS A Loudspeaker Diameter 16 40 64 cm B Depth When Front Mounted 61 15 88 cm Br Depth When Rear Mounted 7 17 78 cm C Baffle Opening Diameter 14 35 87 cm D Bolt Circle Diameter 15 38 1 cm E Bolt Hole Slots 4 0 64 cm x 3 4 2 02 cm 8 slots spaced 45 apart ARCHITECT S AND ENGINEER S SPECIFICATIONS The low frequency loudspeaker shall meet the following criteria AES power rating up to 75 watts of band limited pink noise 40 400 Hz Frequency re
3. sponse uniform from 30 1600 Hz when mounted in a suitable enclosure Pressure Sensitivity 98 dB SPL when measured at 1 meter on axis from front edge of the system with one watt of band limited pink noise from 100 1000 Hz Ref 0 0002 dyne cm Minimum impedance 8 ohms Nominal free air LF cone resonance 24 Hz The voice coil shall be 3 in diameter driven by an alnico magnet having a flux density of 1 1 Tesla Dimensions 16 diameter x 7 deep Weight 17 5 pounds The low frequency loudspeaker shall be the ALTEC LANSING Model 416 8B ALTEC P O BOX 26105 OKLAHOMA CITY OK 73126 0105 U S A 1987 ALTEC LANSING CORPORATION PRINTED IN U S A 12 87 2m REVISION 7 AL 1852 42 07 027083
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