– Full music sounds – This thing is rock solid! Hard hitting bass that is sure to bring a smile. Overall, music is so much fuller has a new dimension. – Rugged construction minimizes vibration caused by car noise and won’t rattle windows – 8″ Super Slim Active Subwoofer with Amplifier – Low frequency ability of the bass horn, high quality low tone output. – Fine workmanship and good performance. – Easy to install, can be installed directly under the driver’s seat. – Durable in use. – Bass Speaker Unit Size: 8 Inch – Treble Speaker Unit Size: 3 Inch – Max output power: 600w – RMS: 200W – Normal impedance: 4Ω – Voltage: 12V – SNR: >90db – THD:<0.4% – Size: 350*245*85mm – Fuse: 20A – Package includes only the subwoofer speaker and nothing else