Gravity GSC-W12P 12-Inch Powered Slim Subwoofer

The Gravity GSC-W12P is a self-powered 12-inch subwoofer enclosure designed to add low-frequency output without requiring a separate subwoofer amplifier. Its slim, compact enclosure is intended for vehicles where conventional large subwoofer boxes are impractical. With the amplifier integrated into the enclosure, it provides a simplified path to adding bass in cars, trucks, and SUVs.

Rated at 600 watts RMS and 1200 watts peak power, the GSC-W12P is built for listeners who want stronger bass presence from a compact installation. Its specified 40Hz to 200Hz frequency response focuses on the low-frequency range used for bass reinforcement. The adjustable controls allow the subwoofer output to be blended with factory or aftermarket speakers.

A Darlington Class A/B amplifier is built into the enclosure, eliminating the need to select and mount a separate external amplifier. The variable low-pass filter operates from 40Hz to 200Hz and uses a stated ±12dB-per-octave slope. This lets the installer limit higher bass frequencies so the enclosure works more naturally with the vehicle's main speakers.

The GSC-W12P supports both low-level RCA and high-level speaker-level connections. This flexibility is useful for aftermarket receivers with RCA preamp outputs as well as factory audio systems that do not provide them. An included external bass-level remote gives the driver a convenient way to adjust subwoofer level from the seating position.

Additional tuning includes variable phase adjustment from 0 to 180 degrees and bass boost adjustment from 0 to 12dB. These settings can help align bass output with the rest of the vehicle audio system after installation. The GSC-W12P is a practical all-in-one bass upgrade for compact mounting locations, including under-seat or trunk applications where its dimensions permit secure placement.

Key Features

• 12-Inch Powered Enclosure: Combines a subwoofer and built-in amplifier in one unit.
• 600W RMS Power: Provides continuous power capability for bass reinforcement.
• Low-Pass Crossover: Adjustable 40Hz to 200Hz range helps match main speakers.
• Dual Input Support: Accepts RCA low-level and high-level speaker connections.
• Phase Adjustment: Variable 0 to 180 degree control supports system integration.
• External Bass Remote: Lets the driver adjust bass level conveniently.

Design & Installation

The GSC-W12P uses a slim, self-contained active-enclosure design measuring 15.85 x 21.75 x 5.85 inches. Gravity's available technical details do not specify the enclosure material, but the unit is documented as a compact powered subwoofer enclosure with the amplifier integrated into the assembly. Its form factor is intended for space-conscious vehicle installations rather than a separate subwoofer-and-amplifier layout.

Mount the enclosure securely in a location with adequate clearance and ventilation, such as a suitable under-seat area or trunk space. Connect it through the RCA low-level input when the source unit has preamp outputs, or use the high-level input with compatible factory speaker wiring. Set input level, low-pass filter, phase, and bass boost gradually after installation, then use the included remote to make normal listening-level adjustments.