The instruction manual is a general one. Please refer to the description for details. The product is low level input, Beschreibung: Dieses Produkt Ist Ein Car-audio-modifizierter 8-Zoll-subwoofer Mit Hohen Aktivlautsprechern Und Verstärker-subwoofer. Kann Direkt Unter Dem Copilotensitz Montiert Werden. Hervorragende Niederfrequenzleistung, Reine Musikausgabe Und Soundeffekte. Lieferinhalt: 1 Lautsprecher 1 Remote-kabelsatz 1 Schraubensatz Spezifikationen: Nennleistung: 600w Frequenzgang: 20 Hz – 150 Hz Impedanz: 4? Spannung: 12v Signal-rausch-verhältnis: > 90 Db Material: Aluminiumlegierung Farbe: Schwarz. 600W 8 in Under-Seat Powered Subwoofer Sub Bass Speaker Car/Truck Audio Slim Kit. The product is low level input. This product is a car audio modified 8 inch subwoofer with high powered speakers and amplifier subwoofer. Can be mounted directly under the co-driver’s seat. Excellent low frequency performance, pure music output and sound effects. 1 Remote cable set. 8-inch woofer, Pure Music Output And Sound Effects Are More Circumstantial. High performance design, more powerful sound. Multiple cooling holes on both sides to ensure heat dissipation and prevent speaker from burning. Stainless steel body, durable. High strength protective alloy mesh for better protection of tweeters. Frequency Response: 20 Hz – 150 Hz. Signal-to-noise ratio: > 90 Db. Wiring: Three Wires Must Be Connected. (If There Is No Sound After Installation, Please Check Whether the Wiring Is Connected to the Three Wires: 12v to the Battery Positive Stage, Rem to the Host Acc or 12v in Series, Gnd Ground). 2 Adaptation: All Cars with 12v Power Supply Can Be Used. France, Germany, spain, Italy. Feedback is very important to us. It is impossible to address issues if we do not know about them! Please keep the original box or packaging within 15days since item received. Your satisfaction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.