Very Strong Aluminum Box for better sound, heat dissipation and lightweight construction High Efficiency Digital Amplifier Built-In Auto Turn-On Function when using Hi-Level Input for easier installation Remote Level Knob to get easy amount of Bass control Passive Radiator Design for deeper and louder sound output in a smaller enclosure DS18 Amplified Loaded Subwoofer Enclosure with 8" Active and 8" Passive Subs This listing includes: (1) Amplified Loaded Enclosure SQ82A Feel the vibrations as your favorite tunes come alive with DS18’s SQ82A, the ultimate solution for car audio enthusiasts who crave exceptional bass performance without compromising on space. The SQ82A is engineered for vehicles that demand extraordinary bass but have limited room for large subwoofers and enclosures. This compact powerhouse combines an 8-inch active subwoofer with an 8-inch passive woofer, working harmoniously to enrich the tone and elevate the bass levels in a remarkable high-end aluminum enclosure. What sets the SQ82A apart is its built-in amplifier, conveniently packed with all the essential settings right at your fingertips. Unleash the true potential of your music when you; adjust the bass boost, gain control, and low-pass filter settings effortlessly. No need for complex installations or external devices – the SQ82A is a self-contained marvel that tailors the sound to your exact preferences. Its versatility shines through with high-level inputs and RCA inputs, ensuring compatibility with any vehicle. And let's not forget the aluminum enclosure that houses the SQ82A, elevating its performance to unprecedented heights. Crafted with the utmost precision and attention to detail, this high-end enclosure not only enhances the subwoofer's aesthetic appeal but also plays a vital role in optimizing its sound reproduction. The aluminum enclosure acts as a resonance-free environment for the subwoofer, preventing unwanted vibrations and distortions from corrupting the audio signal. This compact subwoofer is ingeniously crafted to fit seamlessly behind most conventional car seating, rear cubbies, or small-sized storage compartments. DS18’s SQ82A ensures you get vibrant bass in any vehicle no matter how limited your space may be. Specifications: Speaker Type / Size: 8" Active + 8" Passive Total Impedance: 2 Ohm Total RMS Power Handling: 300W Total MAX Power Handling: 1200W Sensitivity (1w/1m): 83dB Frequency Response: 30-350Hz Speaker Specifications: Voice Coil Diameter: 1.52" / 38.6mm Voice Coil Former Material: Aluminum Winding Material: Copper Cone Material: Non-Press Cone Dust Cap Material: Paper Surround Material: Rubber Basket Material: Steel Magnet Material: Ferrite Magnet Weight: 32 Oz / 914.0g Amplifier Specifications: Amplifier Class: Class D Amplifier Type: Subwoofer Monoblock Number of Channels: 1 Minimum Impedance: 2 ohm Signal to Noise Ratio: >80dB Efficiency @ 4ohm: 75% Total Harmonic Distortion (THD): <0.5% Low Level Input Range: 200mv - 6V High Level Input: 2-9V Auto Turn-On: Yes (Hi-Level Input) Selectable X-Over: LPH Fixed X-Over Filter Range: 35-180Hz Bass Boost Range: 0-12dB Bass Boost Frequency: 50Hz Infrasonic Filter: No Led Indicator: Power / Protection Power Input Terminal Size: 8Ga Fuse Size: 30A Remote Level Control: Yes (Dash Mount Included) Cooling Fan: No Voltmeter: No Thermal Protection: Yes (>75?) Over-Load Protection: No DC Output Protection: Yes (>2V) Short Circuit Output Protection: Yes Voltage Input Protection: Yes (>17vdc) Clipping Protection: No Box Specifications: Internal Volume: 10.8L / 0.38ft3 Box Tune FB: 50Hz Load Configuration: parallel In Box Type: Passive active (Sealed) Box Material: Aluminum Finish Material: Anodic Black -3Db Dropping Point F3: 35Hz Measurements: Overall Height: 9" / 230mm Overall Width: 9" / 230mm Overall Depth: 12" / 304mm