Altec Lansing 414-8C User's Manual
Contents
1. SOUND PRODUCTS DIVISION DESCRIPTION The ALTEC 414 8C 12 inch Low Frequency Loudspeaker provides optimum performance in medium sized enclosures 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 414 8C LOW FREQUENCY LOUDSPEAKER wound copper ribbon to provide more turns of wire in the voice coil gap Cone suspension pro vides high compliance for accurate reproduc tion of low frequencies An exceptionally fine crafted speaker for use in moderate sized sound reinforcement and high fidelity systems SPECIFICATIONS Power Rating Frequency Response Pressure Sensitivity Impedance Nominal Free Air Cone Resonance Voice Coil 50 watts of continuous pink noise Uniform 30 4000 Hz 96 dB SPL at 4 when installed in ALTEC 614D enclosure and measured on axis with 1 watt input of pink noise band limited from 500 1500 Hz and calculated to 4 equivalent Ref 0 dB 0 0002 dyne cm 8 ohms 30 Hz 3 diameter edge wound copper ribbon Magnet Construction Frame Basket Cone Cone Suspension Dimensions Weight Mounting Data Baffle Opening Mounting Bolt Centers Alnico 1 8 pounds 9 000 gauss flux density Structurally reinforced die cast aluminum Molded fiber High compliance cloth surround with mechanical2. resistance 12 31 1 cm diameter 5 14 3 cm depth 15 pounds 6 8 kg 11 28 3 cm front or rear mounting 4 bolts equally spaced on 11 28 5 cm diameter circle ARCHITECT S AND ENGINEER S SPECIFICATIONS The low frequency loudspeaker shall meet the following criteria Frame structurally reinforced die cast aluminum rigid enough to permit front or rear mounting Voice coil 3 diameter of edge wound copper ribbon Flux density 9 000 gauss Magnet weight 1 8 pounds Power rating 50 watts of continuous pink noise Frequency response uniform from 30 4000 Hz Pressure sensitivity 96 dB SPL at 4 when measured on axis with 1 watt input of pink noise band limited from 500 1500 Hz Impedance 8 ohms Nominal free air cone resonance 30 Hz Dimensions 1214 diameter x 558 deep Weight 15 pounds The low frequency loudspeaker shall be the ALTEC Model 414 8C 7 aN es i E SOUND PRODUCTS DIVISION 1515 SOUTH MANCHESTER AVENUE ANAHEIM CALIFORNIA 92803 LITHO IN U S A 277 2 5K AL 1851 2
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