| SPECIFICATION | 
| Nominal Basket Diameter | 12", 305 mm | 
| Nominal Impedance* | 8 Ω | 
| Power Rating** | 
| Watts | 500 W | 
| Music Program | 1000 W | 
| Resonance | 51 Hz | 
| Usable Frequency Range | 44 Hz - 3 kHz | 
| Sensitivity*** | 94.6 dB | 
| Magnet Weight | 56 oz. | 
| Gap Height | 0.375", 9.5 mm | 
| Voice Coil Diameter | 2.5", 64 mm | 
| THIELE & SMALL PARAMETERS | 
| Resonant Frequency (fs) | 51 Hz | 
| DC Resistance (Re) | 6.06 Ω | 
| Coil Inductance (Le) | 1.45m H | 
| Mechanical Q (Qms) | 7.28 | 
| Electromagnetic Q (Qes) | 0.51 | 
| Total Q (Qts) | 0.47 | 
| Compliance Equivalent Volume (Vas) | 67.9 liters / 2.4 cu.ft. | 
| Peak Diaphragm Displacement Volume (Vd) | 243 cc | 
| Mechanical Compliance of Suspension (Cms) | 0.19 mm/N | 
| BL Product (BL) | 14.1 T-M | 
| Diaphragm Mass Inc. Airload (MMs) | 51 grams | 
| Efficiency Bandwidth Product (EBP) | 100 | 
| Maximum Linear Excursion (Xmax) | 4.8 mm | 
| Surface Area of Cone (Sd) | 506.7 cm2 | 
| Maximum Mechanical Limit (Xlim) | 13.5 mm | 
| MOUNTING INFORMATION | 
| Recommended Enclosure Volume | 
| Sealed | 19.80-28.00 liters / 0.70-1.00 cu.ft. | 
| Vented | 25.50-102.00 liters / 0.90-3.60 cu.ft. | 
| Driver Volume Displaced | 0.079 cu.ft. / 2.25 liters | 
| Overall Diameter | 12.03", 305.6 mm | 
| Baffle Hole Diameter | 11.07", 281.2 mm | 
| Front Sealing Gasket | Yes | 
| Rear Sealing Gasket | Yes | 
| Mounting Holes Diameter | 0.25", 6.4mm | 
| Mounting Holes B.C.D. | 11.59", 294.4mm | 
| Depth | 5.35", 135.9 mm | 
| Net Weight | 11.8 lbs, 5.35 kg | 
| Shipping Weight | 14 lbs, 6.35 kgs | 
| MATERIALS OF CONSTRUCTION | 
| Coil Construction | Copper voice coil | 
| Coil Former | Polyimide former | 
| Magnet Composition | Ferrite magnet | 
| Core Details | Vented and extended core | 
|   |   | 
| Basket Materials | Pressed steel basket | 
| Cone Composition | Paper cone | 
| Cone Edge Composition | Cloth cone edge | 
| Dust Cap Composition | Solid composition paper dust cap |