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8"- 50W AlNiCo Guitar Loudspeaker P 8 R - 16 ? Code ZJ04045 GENERAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS Nominal Overall Diameter ................. 207 mm Nominal Impedance........................... 16 ? Nominal Voice Coil Diameter .............. 25 mm Musical Power ................................. 50 W Magnet Weight ............................... 200 g Rated Power* .................................. 25 W Flux Density................................... 0.96 T Sensitivity @ 1 W, 1 m ....................... 93.8 dB Weight......................................... 1.20 Kg THIELE-SMALL PARAMETERS n°4 holes O 8 ? 5 Voice Coil DC Resistance ........... R E 12.10 ? at 90° on O 197.0 Resonance Frequency ............... f s 126.2 Hz 207.0 Mechanical Q Factor................. Q MS 9.86 Electrical Q Factor................... Q ES 1.85 Total Q Factor........................ Q TS 1.56 Mechanical Moving Mass ............ M MS 9.7 g Mechanical Compliance............. C MS 163 µm/N Force Factor .......................... B?l 7.12 Wb/m Equivalent Acoustic Volume........ V AS 10.5 lt. 178.5 Maximum Linear Displacement .... X MAX +/-1.0 mm Reference Efficiency ................ ? 0 1.10 % 2 Diaphragm Area ...................... S D 213.8 cm Losses Electrical Resistance........ R ES 64.5 ? Voice Coil Inductance @ 1kHz ..... L E 0.71 mH 1.0 5.0 CONSTRUCTIVE CHARACTERISTICS Magnet................................. AlNiCo Voice Coil Winding................... Copper 49.0 Voice Coil Former.................... Kapton 6.0 Cone ................................... Paper 98.5 Surround............................... Paper - Integrated 49.5 Dust Dome ............................ Solid Paper Basket ................................. Pressed Sheet Steel *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 - Impedance + 110 50 0 + 105 20 0 + 100 +9 5 10 0 d +9 0 B 50 +8 5 ? S P L +8 0 20 +7 5 10 +7 0 5 +6 5 3 +6 0 20 50 1 00 200 500 1 k 2k 5k 1 0 k 20 k Hz Due to continuing product improvement, the features and the design are subject to change without notice. 12/09/08 SICA Altoparlanti s.r.l. - ITALY – website: www.sica.it - E-mail: lab@sica.it - Tel. +39-071-7958072 - Fax +39-071-7959006