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Introducing the Rockville RTB12A Powered Subwoofer Tube. Growing up one of my best friends bought a car and it had a powered tube in it. The sound that it produced was just amazing and I will never forget it. Tubes push out some of the punchiest bass available. I personally love punchy bass that is deep and clean. Bass is an integral part of any good audio system and the Rockville Bass Blaster amplified subwoofer tubes will add power and impact to your car audio system. The cylindrical shape of the enclosure helps focus the motion of the bass pressure so it maximizes that punchy output from both the woofers face and the tuned rear aero port. Strong deep bass will fire through your vehicle for astounding results. Since this is a powered tube you get everything you need! This is your entire bass system. The built in power amplifier will push this tube to the max. The amp sub and enclosure are perfectly tuned and matched to sound perfect together. As far as power is concerned the RTB12A is a powerhouse. The compact package features a high power 12woofer and 600-Watt amplifier that will literally shoot deep bass waves throughout your car. You can fine-tune the subwoofer with the built-in electronic low pass crossover so that your subwoofer meshes perfectly with the rest of your audio system. The built-in bass equalizer allows you to set in the exact amount of bass boost of up to 18dB’s @ 45Hz for real ground pounding bass while the included dashboard bass control knob allows you dial in all the bass directly and conveniently from the drivers seat. Installation is a breeze! No need for building and wiring enclosures to amplifiers. Simply power ground remote and send signal to the tube and you are ready to enjoy the most incredible bass you have ever heard.