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J 12/150 - 8 : Professional Audio Loudspeaker Music Industries

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® J 12/150 - 8 : Professional Audio Loudspeaker music industries Ref. # ZJ06510 GENERAL CHARACTERISTICS Nominal Overall Diameter ................. 318 mm Nominal Voice Coil Diameter .............. 50 mm Magnet Weight ............................... 1450 g Flux Density .................................. 1.16 T n° 8 holes 5×9 on Ø 300.0 : Hz : W W dB 318.0 285.0 g Pm/N Wb/m lt. mm % cm2 : mH 89.7 39.0 10.0 130.7 CONSTRUCTIVE CHARACTERISTICS Magnet ............................... Ferrite Voice Coil Winding.................. Copper Voice Coil Former................... Kapton Cone .................................. Paper Surround ............................. Treated Cloth Dust Dome ........................... Solid Paper Basket ................................ Pressed Sheet Steel 6.3 4.0 THIELE-SMALL PARAMETERS Voice Coil DC Resistance........... RE 6.30 Resonance Frequency .............. fs 53.0 Mechanical Q Factor................ QMS 11.50 Electrical Q Factor.................. QES 0.44 Total Q Factor....................... QTS 0.42 Mechanical Moving Mass ........... MMS 35.2 Mechanical Compliance ............ CMS 255.0 Force Factor ......................... B×l 12.95 Equivalent Acoustic Volume....... VAS 86.2 Maximum Linear Displacement ... XMAX 2.00 Reference Efficiency ............... 2.83 K0 Diaphragm Area ..................... SD 490.8 Losses Electrical Resistance ....... RES 164.0 Voice Coil Inductance @ 1kHz..... LE 0.92 ELECTRICAL CHARACTERISTICS Nominal Impedance .......................... 8 Rated Power (DIN 45573 - IEC 268.5) ...... 150 Musical Power (DIN 45500) .................. 300 Sensitivity @ 1 W, 1 m ....................... 97.6 Ø 154.0 Frequency Response on IEC Baffle (DIN 45575) @ 1 W, 1 m - Impedance + 110 500 + 105 200 + 100 + 95 100 d + 90 B 50 : + 85 S P L + 80 20 + 75 10 + 70 5 + 65 3 + 60 20 50 100 200 500 1k 2k 5k 10k 20k Hz 03/04/2001 Loudspeakers R & D - Via G. Galilei, 20 - 60010 PASSO RIPE (AN) - ITALY - Tel. +39-071-7958072 - Fax +39-071-7959006 - E-mail: [email protected]