Altec Lansing 403A User's Manual
Contents
1. SOUND PRODUCTS DIVISION 403A LOUDSPEAKER DESCRIPTION The ALTEC 403A Loudspeaker is a moderately priced wide range unit designed specifically for use in indoor public address and music reproduction systems The 403A is especially desirable in multiple speaker applications because of its reasonable initial cost and high quality It can be flush mounted in either wall ceiling or baffle instal lations All metal parts are heavily cadmium plated A bracket is provided for mounting a 70 volt ALTEC 15132 Line Transformer Rugged voice coil construction assures a long life of trouble free performance These features make the 403A an excellent choice where quality and initial cost are important SPECIFICATIONS Power Rating 12 watts Magnet Structure Magnet Type Alnico V Flux Density 9000 gauss Pressure Sensitivity 95 dB SPL measured at 4 on Magnet Weight 6 80 ounces axis with 1 watt input of Dimensions 8 21 11 cm diameter band limited pink noise 4 10 d from 500 3000 Hz Equal to 10 16 cm deep EIA rating of 48 dB SPL at 30 Weight 3 pounds 1 36 kg with 1 milliwatt input Ref Mounting Data 0 dB 0 0002 dyne cm Mounting Hole Impedance 6 E Diameter 7 18 10 cm Frequency Response 70 11 000 Hz Nominal Free Air vs Bolt kai r MEE Cone Resonance 80 Hz emen OES apa lage i 734 19 69 cm diameter Voice Coil Diameter i circle ARCHITECT S AND ENGINEER S SPE2. CIFICATIONS The loudspeaker shall be 8 in diameter and 4 deep The voice coil shall have a diameter of 1 and shall operate in a magnetic field of at least 9000 gauss derived from an Alnico V magnet weighing at least 6 80 ounces The loudspeaker shall meet the following performance criteria Power rating 12 watts Frequency response uniform from 70 11 000 Hz Pressure sensitivity 95 dB SPL measured at 4 on axis with 1 watt input of band limited pink noise from 500 3000 Hz Impedance 8 ohms Nominal free air cone resonance 80 Hz Weight 3 pounds The loudspeaker shall be the ALTEC Model 403A 1515 SOUTH MANCHESTER AVENUE ANAHEIM CALIFORNIA 92803 Litho in U S A 375 5K AL 1447 5
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