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8"- 90w Dual Cone Loudspeaker

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8"- 90W Dual Cone Loudspeaker LP 208.25/ 270 ER 4 Ω Code Z004209 GENERAL CHARACTERISTICS Nominal Overall Diameter ................. 208 mm Nominal Voice Coil Diameter .............. 25 mm Magnet Weight ............................... 270 g Flux Density................................... 0.90 T Weight ......................................... 1.00 Kg n° 4 holes 8×5 on Ø 197.0 Ω Hz Ω W W dB 208.0 183.0 g µm/N Wb/m lt. mm % cm2 Ω mH 22.8 Ø 86.0 46.6 6.0 69.4 CONSTRUCTIVE CHARACTERISTICS Magnet................................. Ferrite Voice Coil Winding................... Copper Voice Coil Former.................... Epotex Cone ................................... Paper Surround............................... Treated Cloth Dust Dome ............................ Dual-Cone Basket ................................. Pressed Sheet Steel 5.4 3.0 THIELE-SMALL PARAMETERS Voice Coil DC Resistance ........... RE 3.12 Resonance Frequency ............... fs 77.6 Mechanical Q Factor................. QMS 4.98 Electrical Q Factor................... QES 1.16 Total Q Factor........................ QTS 0.94 Mechanical Moving Mass ............ MMS 13.3 Mechanical Compliance ............. CMS 316 Force Factor .......................... B×l 4.18 Equivalent Acoustic Volume........ VAS 20.5 Maximum Linear Displacement .... XMAX +/-1.5 0.79 Reference Efficiency ................ η0 Diaphragm Area ...................... SD 213.8 Losses Electrical Resistance........ RES 13.4 Voice Coil Inductance @ 1kHz ..... LE 0.24 ELECTRICAL CHARACTERISTICS Nominal Impedance........................... 4 Musical Power ................................. 90 Rated Power* .................................. 45 Sensitivity @ 1 W, 1 m ....................... 92.3 *rated power measured with 2 hours test with pink noise signal, 6 dB crest factor, loudspeaker mounted on enclosure Thiele-Small parameters measured with LASER system Frequency Response on IEC Baffle (DIN 45575) @ 1 W, 1 m – Free Air Impedance +110 500 +105 200 +100 +95 d 100 +90 50 B S +85 Ω P L +80 20 +75 10 +70 5 +65 3 +60 20 50 100 200 500 Hz 1k 2k 5k 10k Due to continuing product improvement, the features and the design are subject to change without notice. SICA Altoparlanti s.r.l. - ITALY – website: www.sica.it - E-mail: [email protected] - Tel. +39-071-7958072 - Fax +39-071-7959006 20k 01/02/12