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Product Description
Product Description
JBL BassPro SL2 Self-Powered Underseat Subwoofer System with 8" Woofer - Black
Shallow-Profile 8-Inch Woofer
At the heart of the JBL BassPro SL2 is a proprietary 8-inch, or 200mm, shallow-profile woofer. JBL designed it specifically to produce low distortion and strong bass performance inside a compact ABS enclosure. Think of it like fitting a larger bass presence into a much smaller footprint, giving you added low-frequency output without requiring a bulky enclosure.
125W RMS Class D Amplifier
The built-in Class D amplifier delivers 125 watts RMS while producing minimal heat. Moreover, it does not require a large amount of current from your vehicle’s electrical system. With a maximum current draw of 12A and a 15A fuse, the JBL BassPro SL2 combines efficient amplification with the convenience of an all-in-one powered design.
Compact Underseat Design
Space can disappear quickly inside a vehicle, so why dedicate a large section of it to a subwoofer? The JBL BassPro SL2 measures just 13-9/16 inches long, 9-7/8 inches wide, and 2-13/16 inches high. Its low-profile enclosure fits under the front seat of many vehicles, helping you add bass while keeping the system tucked away.
35Hz–120Hz Frequency Response
With a frequency response of 35Hz to 120Hz, the system focuses directly on the low frequencies that add weight and fullness to your music. Its custom-tuned enclosure works alongside the shallow woofer and amplifier, creating a complete bass system rather than a collection of separate components.
Adjustable 50Hz–120Hz Crossover
The JBL BassPro SL2 includes a manual crossover adjustable from 50Hz to 120Hz with a 12dB-per-octave slope. This control lets you determine how much upper bass and mid-bass the subwoofer produces. As a result, you can fine-tune the transition between the subwoofer and the rest of your vehicle’s speakers for a smoother overall response.
Flexible Level and Bass Boost Controls
Built-in EQ controls give you additional ways to shape the sound. The level control lets you balance the JBL BassPro SL2 with the other speakers in your system. Meanwhile, Bass Boost adjusts from 0dB to +9dB at 70Hz, helping you minimize peaks or dips caused by your vehicle’s acoustic environment.
Intelligent Electronic Design
High-pass filters and limiters help the JBL BassPro SL2 maintain strong performance when pushed toward its operating limits. These electronic controls work behind the scenes like a traffic controller, helping manage the signal so the system can deliver controlled bass performance across demanding listening conditions.
Line-Level and High-Level Inputs
For greater connection flexibility, the system supports both line-level and high-level inputs. Line-level input sensitivity ranges from 0.05V to 2V, while high-level sensitivity ranges from 0.5V to 20V. When using the high-level inputs with a head unit, an input load switch lets you select between “Low” and “High” settings to achieve optimum results.
Included Wired Remote Bass Control
You do not have to reach under the seat whenever you want to change the bass level. The JBL BassPro SL2 includes a JBL GTO-RBC remote bass level control, giving you convenient wired adjustment from a more accessible location inside the vehicle.
What’s in the Box?
- 1 x Powered woofer enclosure
- 4 x Mounting screws
- 1 x Remote bass level control
- 1 x Owner’s manual
A Compact Way to Add More Bass
The JBL BassPro SL2 combines an 8-inch woofer, 125W RMS amplification, and additionally includes crossover and Bass Boost controls. Moreover, flexible inputs and remote level adjustment give you convenient control from one compact enclosure. Therefore, its underseat-friendly dimensions add deeper, fuller bass without requiring a large enclosure elsewhere in your vehicle.
Frequently Asked Questions
How much power does the JBL BassPro SL2 produce? It delivers 125 watts RMS through its built-in Class D amplifier.
What size woofer does the BassPro SL2 use? It uses a proprietary shallow-profile 8-inch, or 200mm, woofer designed for low distortion and strong bass performance.
What is the frequency response of the BassPro SL2? Its specified frequency response is 35Hz to 120Hz.
Can I adjust the BassPro SL2 crossover? Yes. The crossover is adjustable from 50Hz to 120Hz and uses a 12dB-per-octave slope.
Does the BassPro SL2 include a remote bass control? Yes. A JBL GTO-RBC wired remote bass level control is included in the box.








