Check the listing for details. 600W Slim Under-Seat Subwoofer Powered Car Truck Sub w/ Amp Kit Speaker 8" New. Condition: New. Listed at 53.39 USD. Description: This product is a car audio modified subwoofer 8 inch shock with high-pitched active speakers with amplifier subwoofer. Can be mounted directly under the co-pilot seat. Excellent low-frequency performance, pure low music output, and sound effects. feature 1.8-inch woofers, pure music output, sound effects are even more awkward. 2. High power design, stronger sound. 3. There are multiple cooling holes on both sides to ensure heat dissipation and avoid burning of the speakers. 4. Stainless steel body, durable. 5. High-strength protection alloy mesh for better protection of tweeters. Product specifications 1. Rated power: 600W 2. Frequency response: 20HZ-150Hz 3. Impedance: 4Ω 4. Voltage: 12V 5. Signal to noise ratio: > 90dB 6. Material: aluminum alloy Package Included 1* speak.