Eminence The Tonker A Very fat, clean and warm tone through the midrange, with a smooth top end. | THE TONKER™ | | | SPECIFICATION | | | Nominal Basket Diameter | 12 , 304.8mm | | Nominal Impedance* | 8 ohms | | Power Rating | |  Watts | 150W | | Music Program | | | Resonance | 89Hz | | Usable Frequency Range | 70Hz-5.5kHz | | Sensitivity*** | 102 | | Magnet Weight | 59 oz. | | Gap Height | 0.312 , 7.92mm | | Voice Coil Diameter | 2 , 50.8mm | | | | | THIELE & SMALL PARAMETERS | | | Resonant Frequency (fs) | 89Hz | | DC Resistance (Re) | 7.36 | | Coil Inductance (Le) | 0.47mH | | Mechanical Q (Qms) | 10.02 | | Electromagnetic Q (Qes) | 0.49 | | Total Q (Qts) | 0.47 | | Compliance Equivalent Volume (Vas) | 34.1 liters / 1.2 cu. ft. | | Peak Diaphragm Displacement Volume (Vd) | 42cc | | Mechanical Compliance of Suspension (Cms) | 0.09mm/N | | BL Product (BL) | 17.4 T-M | | Diaphram Mass inc. Airload (Mms) | 36 grams | | Efficiency Bandwidth Product (EBP) | 181 | | Maximum Linear Excursion (Xmax) | 0.8mm | | Surface Area of Cone (Sd) | 519.5 cm2 | | Maximum Mechanical Limit (Xlim) | | | | | | MOUNTING INFORMATION | | | Recommended Enclosure | | | Sealed | Acceptable | | Vented | Acceptable | | Overall Diameter | 12.02 , 305.3mm | | Baffle Hole Diameter | 10.97 , 278.6mm | | Front Sealing Gasket | fitted as standard | | Rear Sealing Gasket | fitted as standard | | Mounting Holes Diameter | 0.25 , 6.4mm | | Mounting Holes B.C. D. | 11.63 , 295.4mm | | Depth | 5.2 , 132mm | | Net Weight | 11.1 lbs., 5 kg | | Shipping Weight | 13.2 lbs., 6 kg | | | | | MATERIALS OF CONSTRUCTION | | | Coil Construction | Copper voice coil | | Coil Former | Polyimide former | | Magnet Composition | Ferrite magnet | | Core Details | Non-vented core | | Basket Materials | Pressed steel basket | | Cone Composition | Paper Cone | | Cone Edge Composition | Paper cone edge | | Dustcap Composition | Zurette dust cap |
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