Gravity

Gravity GRWF10 Car Audio Under Seat Subwoofer

Experience Powerful Bass in a Compact DesignThe Gravity GRWF10 Under Seat Powered Subwoofer delivers deep bass and exceptional audio performance for your car. Designed to fit under the seat, this subwoofer provides a powerful audio upgrade without sacrificing space. Specifications: Brand: G...

$149.99*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Oct 21, 2026.Price and availability are subject to change — details.

Affiliate Disclosure: As an Amazon Associate, Studio Supplies earns from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Experience Powerful Bass in a Compact Design

The Gravity GRWF10 Under Seat Powered Subwoofer delivers deep bass and exceptional audio performance for your car. Designed to fit under the seat, this subwoofer provides a powerful audio upgrade without sacrificing space.

Specifications:

  • Brand: Gravity
  • Model: GRWF10
  • Subwoofer Size: 10"
  • Power: 550 Watts
  • Frequency Response: 20Hz - 150KHz
  • THD: 0.4%
  • Signal to Noise Ratio: 90dB
  • Input Sensitivity: High level 0.5V, Low level 110mV
  • Bass Boost: 0 to +12 dB
  • Subsonic Filter: 20Hz fixed
  • Fuse Rating: 40A
  • Passive Radiator: 185x52mm

Key Features

POWERFUL - 550-watt active 10-inch under-seat subwoofer adds impactful low-frequency output to car and truck audio systems, combining an integrated amplifier with a long-throw driver in a compact bass upgrade.

SLIM - Super-slim aluminum construction is designed for space-conscious vehicle installations, making the GRWF10 an effective choice for mounting under or behind seats where a traditional large subwoofer enclosure cannot fit.

CONTROLLED - Built-in low-pass filter lets you set the upper bass frequency range, helping the GRWF10 blend smoothly with door speakers and component systems for cleaner, more focused low-end response.

ALIGNED - Phase-shift adjustment helps compensate for timing differences between the subwoofer and full-range speakers, supporting stronger bass integration and a more cohesive soundstage at the listening position.

AUTOMATIC - High-level input auto power on/off capability detects signal from factory-style speaker wiring, simplifying installation in vehicles without dedicated RCA subwoofer outputs or an aftermarket head unit.

ENHANCED - Adjustable bass boost increases low-frequency level when desired, while the bi-color power-status LED provides a quick visual indication of operating status for convenient system monitoring at a glance.

Specifications

Construction
High density and high quality
Phase Control
Phase shift for time alignment
Power Management
Auto power on/off for high level connection
Filter
Low pass filter
Audio Enhancement
Bass boost
Indicator
Bi-color Power status LED

Frequently Asked Questions

The phase shift feature on this subwoofer is designed to compensate for time alignment problems that can occur within the car audio system, helping to ensure synchronized sound delivery.
Yes, it features an auto power on/off function when using high-level connections, which can simplify its integration and use within your vehicle's audio system.
The low pass filter allows you to control the specific frequency range that the subwoofer reproduces, enabling you to tailor the bass output to blend seamlessly with your car's main speakers.
Yes, this subwoofer includes a bass boost feature that allows you to increase the sound level of the low frequencies, enhancing the impact of your audio.
The bi-color LED on the subwoofer serves as a power status indicator, providing a visual cue regarding the unit's operational state.