Assessments - 4, GPA: 4.3
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The low-mass voice coil is made from edge- wound copper ribbon to provide more turns of wire in the voice-coil gap. Cone suspension provides high compliance for accurate reproduction 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/cm2) 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 mechanical resistance MVa" (31.1 cm) diameter 5%" (14.3 cm) depth 15 pounds (6.8 kg) 11 Vi" (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, 121A" diameter x55/s" deep. Weight, 15 pounds. The low-frequency loudspeaker shall be the ALTEC Model 414-80 ALTTEEC SOUND PRODUCTS DIVISION 1515 SOUTH MANCHESTER AVENUE, ANAHEIM, CALIFORNIA 92803 LITHO IN U.S.A. 277-2.5K AL-1851-2...