JBL Bass Pro SL2 8-inch Underseat Subwoofer Boombox | Deep Car Bass

Turn Every Drive into a Concert with JBL Bass Pro SL2

The BassPro SL2 under-seat subwoofer fits under the front seat of many vehicles, turning your driver's seat into the best seat in the house. Its compact 8-inch driver is powered by a built-in Class D amplifier, delivering clean, punchy low end without adding bulk to your cabin. The design emphasizes efficiency and minimal heat generation, supporting longer listening sessions on the road.

Key advantages at a glance

• 8-inch woofer with 125W RMS power
• Frequency response from 35 Hz to 120 Hz for deep, controlled bass
• Low heat operation thanks to an efficient built-in amplifier and thermal management

Tailor the sound to your space

• Manual crossover control 50 Hz – 120 Hz lets you decide how much upper and mid bass reach the car speakers
• Level control to match the sub volume with the rest of the system; bass boost control from 0 dB to +9 dB at 70 Hz
• Line-level and high-level inputs provide flexible integration with factory or aftermarket systems

Setup and usability

Auto set features help adapt to your car acoustic while you fine tune for the sweet spot behind the wheel. The subwoofer footprint 344 x 71 x 250 mm keeps a tidy dashboard area, and the kit includes fixing screws and a manual for straightforward installation. GTO-RBC remote control compatibility adds another layer of convenience for on-the-go tuning.

In the box

Inside you will find the BassPro SL2 subwoofer, a wired bass level remote, four fixing screws, and the manual. Everything you need for a quick setup and solid mounting.

Why choose JBL

• Reputable car audio brand with a focus on clear bass and reliable performance
• Integrated amplifier for a compact, standalone subwoofer experience
• Built-in protections and filters to help keep sound clean

Real world uses

• Daily commutes with rich bass for hip hop or rock playlists
• Road trips with consistent low end while keeping cabin space intact
• Urban driving with a compact setup that avoids clutter

Technical snapshot

Woofer 8-inch, Amplifier 125W RMS, Frequency 35 Hz - 120 Hz, Crossover 50 Hz - 120 Hz, Bass boost 0 dB to +9 dB at 70 Hz, Inputs line level and high level, Fuse 15 A, Max current draw 12 A, Quiescent current < 800 mA, Dimensions 344 x 71 x 250 mm, Remote compatibility GTO RBC.