Description 10-inch Features: – 10-inch ultra-thin car subwoofer with amplifier, full-featured and easy to debug. – 3D surround, powerful bass, bring immersive music experience. – Made of aluminum alloy, the box can reduce resonance and improve driving stability. – The metal protective net can efficiently dissipate heat and protect the internal speaker with high strength. – Compact size, ultra-thin design, can be installed directly under the seat. Specifications: Product Name: Car Subwoofer Material: Aluminum Alloy Power: 800W SNR: ≥89dB Output Impedance: 4Ω Speaker Unit Size: 7x10in Frequency Response: 20Hz~160Hz Appropriate Space: Suitable for DC12V Car Size: 31.5*24*8cm/12.4×9.4×3.1in Package Included: 1 x Car Subwoofer 1 x Power Cord (Used to Connect the Positive Pole) 1 x Connection Line 1 x Ground Wire 1 x Control Line 2 x Audio Cable 1 Set Installation Accessories 1 x User Manual Tips: When connecting the power supply, at first plug the audio cable in, then connect the power ground(-), and then connect the power positive( ), and finally connected to the control line. You must use a qualified power cord (2.5 ㎡) and a fuse (20A) control line can use fine lines (0.1㎡)   8-inch Specification: Sound type: Active subwoofer Speaker size: 5 * 8 inches Rated power:150W Peak power: 600W Frequency response: 20Hz ~ 150Hz