Pioneer 12 Subwoofer IMPP Cone with VCCS This Pioneer 12 Subwoofer helps you to get the sound output that you need. It is easy to install so you can start using it right away! This Pioneer subwoofer handles 1 300W max power and normally operates at 300W. It s Voice Coil Cooling System prevents it from overheating. SPECIALLY DESIGNED VOICE COIL: Specially designed voice coil offers higher power handling linear movement and greater excursion for extreme bass output. VOICE COIL COOLING SYSTEM: The Voice Coil Cooling System (VCCS) improves durability and faithfully reproduces the sound of original sources. IMPP: IMPP cone provides increased strength and rigidity for optimized bass response.