Gravity GWS-W12S 12" Powered Slim Subwoofer

The Gravity GWS-W12S is a self-powered 12-inch slim subwoofer system designed to add low-frequency output without using a conventional large subwoofer enclosure and separate amplifier. Its sealed, behind-the-seat enclosure format is suited to cars, trucks, and SUVs where cargo-room preservation is important. With the amplifier integrated into the enclosure, it provides a more consolidated bass upgrade than a separate component subwoofer system.

This model is rated for 500 watts RMS and up to 1,000 watts peak power. Its specified 40Hz-200Hz frequency response and adjustable low-pass filtering allow it to cover the bass range while helping blend with full-range vehicle speakers. The sealed enclosure design is intended for controlled, punchy low-end response rather than the character of a ported box.

A built-in Darlington Class A/B amplifier powers the subwoofer, eliminating the need to match and mount a separate external amplifier. The GWS-W12S accepts both low-level RCA and high-level speaker-level input signals, supporting installation with many factory or aftermarket audio systems. Variable input sensitivity provides adjustment range for matching the signal source.

For system tuning, the powered enclosure includes an adjustable low-pass filter, phase adjustment, and variable bass boost. An external bass-level remote is included for convenient level adjustment from the driver's seat. These controls help tailor the subwoofer's output to the vehicle, source unit, and listener preference.

The GWS-W12S uses a high-density laminated rubber surround, strontium magnet, and high-BL motor structure. Its aluminum construction is described for heat management, while a front metal grille helps protect the woofer. It is a practical choice for an installer building a compact bass system around an existing head unit and full-range speakers.

Key Features

• 12-Inch Powered Subwoofer: Combines a 12-inch subwoofer and built-in amplifier in one enclosure.
• 500W RMS Rating: Provides a continuous-power specification for sustained bass performance.
• Sealed Slim Enclosure: Supports compact behind-the-seat placement and controlled bass character.
• Low- And High-Level Inputs: Allows connection to RCA-equipped or speaker-level audio systems.
• Adjustable Bass Controls: Includes low-pass, phase, bass-boost, and input-sensitivity adjustments.
• External Bass Remote: Lets the driver adjust subwoofer level from the seating area.

Design & Installation

The GWS-W12S is built as a single amplified subwoofer enclosure with an aluminum exterior structure, high-density laminated rubber surround, high-power strontium magnet, and front metal grille. Its sealed enclosure and slim cabinet profile are intended for space-conscious installations. Protection features are listed for overheating and reverse-polarity conditions.

Measure the available mounting area before installation; the listed enclosure dimensions are 15.85 x 21.75 x 5.85 inches. Connect it to a 11-15V DC vehicle electrical system and use either its RCA low-level input or high-level input, as appropriate for the source unit. Set the input sensitivity, low-pass filter, phase, bass boost, and remote level conservatively during initial setup, then fine-tune for balanced integration with the vehicle's main speakers.