[. . . ] [. . . ] LOW LEAKAGE FLUX TYPE FULL RANGE SPEAKER UNIT Features · `ES cone' paper made of banana plant's fiber · Newly designed center cap · Repulsion type magnetically shielded circuit · Ferrite magnet FE127E Specifications & Thiele/Small Parameters Size : 120 mm / 4. 7 Voice Coil Diameter : 20 mm / 0. 8 Cast / Stamped : Stamped Impedance : 8 Reproduction Frequency Response :fs 20 kHz Sound Pressure Level : 91 dB/W(m) Rated Input : 15 W Music Power : 45 W Magnet Material : Ferrite Magnet Weight (main) : 100 g / 0. 220 (cancel) : 59 g / 0. 130 Net Weight g / 1. 265 574 in in Frequency Response / Impedance 110 100 90 80 70 60 50 (dB) 16 Impedance 8 4 lb lb lb 20 Hz 50 100 200 500 1k 2k 5k 10k 20k 40k a: 46 mm D: 92 mm Sd : 0. 00665 m2 Zn : 8 Fs : 70. 4 Hz Re : 6. 50 Le : n/a mH Qms : 3. 33 Qes : 0. 50 Qts : 0. 43 Mms : 2. 98 g BL : 4. 14 Telsa/m Vas : 9. 9 L Xmax : 0. 67 mm Eff/0 : 0. 35 % Cms : 0. 0016 mm/N EBP : 141 Dimensions & Mounting Information R63 117 36. 6 ø73. 7 ø102. 2 Overall Diameter : Baffle Hole Diameter : Depth : 117 mm / 102. 2 mm / 64. 7 mm / 4. 6 in 4. 0 in 2. 5 in 64. 7 [. . . ] [. . . ]