Recommended for professional audio as a mid/hi or full-range and monitor; also for bass guitar, Works well in sealed or vented enclosures, Impedance: 8 ohms, Power Rating: 300W, Maximum Power: 600W, Frequency Response: 54Hz-3, 7kHz, Voice Coil Diameter: 2, 5"" 63, 5mm, Depth: 6, 81"" 173mm, Coil Contruction: Aluminum voice coil, Magnet Composition: Neodymium magnet, Cone composition: Paper Cone, Nominal Basket Diameter:15"" 381mm, Sensitivity: 99, 2, Magnet Weight: 7 oz, Core Details: Vented core, Coil Former: Polyimide former SKU: TBAL5599