Altec Lansing 3154 User's Manual
Contents
1. DESCRIPTION The Altec Lansing Model 3154 15 inch low frequency loudspeaker is part of Altec s new generation of woofers Each loudspeaker in this line was engineered for a particular purpose The 3154 is designed specifically for the repro duction of low frequencies with minimum distortion in a direct radiator enclosure When used as an integral component of the 8154 Loudspeaker System 6 cubic foot vented enclosure full capability of the 3154 is achieved This system provides a 3 dB down frequency of 40 Hz with an optimum Thiele Small alignment Power capacity for the 3154 is 250 watts when measured by the new AES standard specifica tions The 3154 will handle 500 watts of program material when configured as the 8154 system or mounted in another suitable enclosure As with all Altec professional series woofers the 3154 is built with a structurally reinforced die cast frame The ferrite magnet structure coupled with an exceptionally high power voice coil pro vides low distortion even at very high sound pressure levels 3154 LOW FREQUENCY LOUDSPEAKER SPECIFICATIONS Frame Diameter Power Rating Frequency Response Hz Pressure Sensitivity 1 watt E x I with pink noise band limited 100 1000 Hz Maximum Sound Pressure Full power E Z with pink noise band limited 40 400 Hz Impedance Recommended2. 1283 5M Revision 4 AL 2417 42 02 024904
3. March In 8154X Enclosure LITHO IN U S A 100 200 Hz 500 1000 5000 Figure 1 Frequency Response 10 20 50 100 200 Hz 500 1000 Figure 2 Impedance Be LOUDSPEAKER MOUNTING DIMENSIONS A Loudspeaker Diameter 16 40 64 cm Br Depth When Front Mounted 5 14 13 cm Bg Depth When Rear Mounted 634 16 20 cm ARCHITECT S AND ENGINEER S SPECIFICATIONS The low frequency loudspeaker shall meet the fol lowing criteria AES power rating up to 250 watts of band limited pink noise 40 400 Hz Frequency response uniform from 30 2000 Hz when mounted in a suitable enclosure Pressure Sensitivity 94 dB SPL when measured at 1 meter on axis from front edge of Altc Model 8154 Loudspeaker System containing one Model 3154 speaker with one watt of band C Baffle Opening Diameter 14 35 87 cm D Bolt Circle Diameter 15 38 1 cm E Bolt Hole Slots 14 0 64 cm x 3 4 2 02 cm 8 slots spaced 45 apart limited pink noise from 100 1000 Hz Ref 0 0002 dyne cm Minimum impedance 8 ohms Nominal free air LF cone resonance 25 Hz The voice coil shall be 3 in diameter driven by a ferrite magnet having a flux density of 10 000 gauss Dimensions 16 diam eter x 6 deep Weight 23 1 pounds The low frequency loudspeaker shall be the ALTEC LANSING Model 3154 ALTEC 1250 NORTH RED GUM STREET ANAHEIM CALIFORNIA 92806 ALTEC CORPORATION
4. System Maximum Excursion Before Damage Peak to Peak Voice Coil Diameter Thiele Small Parameters Free Air Resonance fs Equivalent Volume Compliance Vas Total Q Qrs Electrical Q Qes Mechanical Q Qus Reference Efficiency yo D C Resistance Re 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 16 500 watts program material 250 watts continuous pink noise band limited 30 2000 93 dB at 4 feet 95 dB at 1 meter 115 dB at 4 feet 117 dB at 1 meter 8 ohms nominal 8154 6 ft System F 40 Hz 1 54 in 3 in 25 Hz 13 9 fe 0 33 0 38 22 1 5 6 4 ohms 0 25 in 31 9 in 128 in 12 75 in 4 5 mH 16 2 ferrite 48 oz 10 000 gauss 141 35 87 cm 15 38 1 cm 5 14 13 cm 636 16 20 cm 23 1 Ibs 10 5 kg AES power rating measured E7 Z where E 45V Z 82 band limited 40 400 Hz AES Recommended Practice Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforce ment See J Audio Eng Soc Vol 30 No 3 1982
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