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JBL BassPro SL 2

Compact powered subwoofer: 125 watts and an 8" sub

Item # 109BASPRO2

With cars getting smaller every year, JBL understands that the need for compact powered subs is greater than ever.

With cars getting smaller every year, JBL understands that the need for compact powered subs is greater than ever.

California customers:
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About the JBL BassPro SL 2

JBL's take on the compact sub

With cars getting smaller every year, JBL understands that the need for compact powered subs is greater than ever. Their latest BassPro SL 2 powered sub delivers impressive bass from a stealthy low-profile enclosure that'll fit under the seat in many vehicles. Its 8" shallow-profile woofer was designed especially for this compact enclosure, so you know you'll be hearing some strong bass.

JBL's take on the compact sub

With cars getting smaller every year, JBL understands that the need for compact powered subs is greater than ever. Their latest BassPro SL 2 powered sub delivers impressive bass from a stealthy low-profile enclosure that'll fit under the seat in many vehicles. Its 8" shallow-profile woofer was designed especially for this compact enclosure, so you know you'll be hearing some strong bass.

125 watts + 8" sub = nice bass

The built-in Class D amplifier delivers 125 watts RMS to the sub, and you can use the low-pass filter, bass boost, and phase switch to get the best possible performance in your vehicle. The amp hardly gets warm when it's working, so you don't have to worry about installing the Bass Pro SL 2 under your seat or in some other tight space.

The Bass Pro SL 2 includes line- and speaker-level inputs with an input load switch. 


Product highlights:

  • powered subwoofer with heavy-duty ABS plastic enclosure
  • 8" shallow-profile woofer
  • Class D amplifier (125 watts RMS)
  • 10-gauge amp wiring kit required (sold separately)
  • controls:
    • low-pass crossover variable from 50-120 Hz at 12 dB per octave
    • variable bass boost (0 to +9 dB at 70 Hz)
    • phase switch (selectable 0 or 180 degrees)
  • speaker and line-level inputs
  • frequency response: 35-120 Hz
  • dimensions: 13-9/16"W x 2-7/8"H x 10-1/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the box:

  • Powered 8" subwoofer (15A ATC fuse installed)
  • 8" Speaker-level input harness
  • Remote level control
  • 16.5' Remote cable (RJ-25 connectors on both ends)
  • Four 2-1/2" Hex-socket screws
  • Hex-socket bit
  • Two 1" Philips-head screws
  • Quickstart guide

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<< >>

More details on the JBL BassPro SL 2

Pat M.

Features & specs

Enclosure Type Sealed
Finish Material ABS
Grille Metal mesh
Connector Type RCA, speaker-level
Bi-amp Inputs No
Woofer Size (inches) 8
Woofer Material Poly
Passive Radiator None
Width 13-1/2"
Height 2-7/8"
Depth 10-1/8"
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 35-120
Amplifier Power (RMS) 125 watts
Maximum Wattage ---
Sensitivity ---
Impedance ---
Second Voice Coil Impedance ---
Crossover Point 50-120
The JBL BassPro SL 2 replaces these items:

Product Research


Enclosure & Driver: The JBL BassPro SL2 features a single 8" woofer in a compact sealed enclosure. The woofer driver features a polypropylene cone with a butyl rubber surround, mounted in a durable ABS enclosure that's compact enough for mounting under seats and in tight spaces.

Amplifier: The subwoofer enclosure is powered by a built-in 125 watt RMS Class-D amplifier. Class-D operation means the amp runs cooler and draws less current from the vehicle's electrical system.

High/Low Inputs: The BassPro SL2 includes a pair of RCA low-level signal inputs, accepting signals from 0.05V - 2.0V. If connecting to a factory headunit or radio without pre-amp outputs, a 2-channel speaker-level input harness is included, accepting signals from 0.5V - 20V.

Audio Sense: The Audio Sense switch, when set to On, allows the BassPro SL2 to power on when it senses voltage on the speaker-level inputs, eliminating the need for connecting a remote turn-on wire.

Crossover: The amplifier's low pass crossover point is continuously variable from 50 to 120 Hz; the crossover slope is 12 dB/octave.

Bass Boost: The bass boost circuit provides a variable (0-9 dB) signal boost centered at 70Hz.

Remote Level Control: A remote level control is provided, that can be mounted under a dash or console for easy adjustment of the bass level from the driver's location. The remote level control includes a 16.5' remote cable terminated in RJ-25 connectors on both ends.

Other Controls&Indicators:

  • Phase: A two position switch (0° or 180°) allows the subwoofer's phase to easily be inverted .
  • Level: A rotary knob adjusts the input signal level.
  • Input Load: Used in conjunction with the speaker-level inputs, this 2-postition switch (High/Low) can be set to provide the lowest amount of noise with a high-level input signal. Generally, this will be set to the High position for most factory radios.
  • Power LED: Lights to indicate unit is powered on.
  • Protect LED: Lights to indicate a fault or short-circuit.


  • Remote Bass: RJ-25 jack for use with included remote bass level control.
  • Fuse: A single 15 amp ATC fuse protects the amplifier.
  • High Level Input: Accommodates the included 4-pin Molex high-level input harness.
  • Power/Ground: Three set-screw terminals provide connections for Power, Ground, and Remote In, each accepting up to 8AWG wire.

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Customer Q&A

15 questions already asked

I have a 2018 Crosstrek with Android Auto but no cd player, I just upgraded speakers but still need bass, should I start with head unit or would this fit that head unit with an adapter?
[ T  Apr 25, 2022 ]
1 answer
The JBL BassPro SL 2 features a speaker level input harness you can use to tap directly into your stock wiring. We also have a car specific t-harness for your Crosstrek that would make it easier to integrate with your stock radio. We need a little more info about your Crosstrek to determine which t-harness would be best. Give us a call at 1-800-324-9695 and we'll be happy to help find the right gear!
[ Allison  Apr 29, 2022 ]  Staff
Can this be installed into the already existing JBL speaker system on a 3rd Generation 2022 Tacoma?
[ Elliot  Jan 10, 2022 ]
2 answers
I am not a professional experienced here but I believe you can do it as when I bought this one, I was asked to install with factory speakers or upgrade to better ones.
[ M  Jan 10, 2022 ]
You should be able to. Just need a sub out from your head unit and a reference line so the amp will automatically turn on.
[ Adrian  Jan 10, 2022 ]
Can I integrate this with my 2021 Toyota 4Runner car stereo system? Is there a wiring harness kit to facilitate this?
[ Ralph  Jun 21, 2021 ]
1 answer
This powered subwoofer can be installed into 2021 4Runners and depending on the stock system, we may have parts that plug into the stock wiring to get the audio for it. I recommend contacting an advisor by calling 1-800-324-9695 to discuss your 4Runner and get a recommendation on all the gear needed to install it
[ Paul  Jul 07, 2021 ]  Staff
Does this come with high level speaker harness?
[ Larry  Jun 03, 2021 ]
4 answers
No it doesn`t come with a harness.
[ CHARLIE ZARATE  Jun 23, 2021 ]
[ Georg  Jun 22, 2021 ]
Mine did
[ JASON  Jun 22, 2021 ]
It does have a speaker level input harness in the box which plugs into the amp allowing it to use speaker level inputs. We have advisors that can be reached by calling 1-800-324-9695 who can help you get wiring and connectors to connect that harness to the speaker wiring
[ Paul  Jun 22, 2021 ]  Staff
I have a 2nd Gen tacoma (2014) double cab. It has ac/heater vents under the front seat for the back seat passengers. Can this be installed under the front seat over the vents or will this cause damage to the product?
[ alex  Apr 20, 2021 ]
1 answer
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
[ Calvin  May 07, 2021 ]  Staff
Can I instal the job probass sl 2 for 2019 Toyota Highlander hybrid?
[ Kiran  Mar 23, 2021 ]
1 answer
If you are looking to put it under a seat, it should fit. I would look up the sub dimensions and measure the spots your are looking to install it. Also remember when picking a spot to install it to account for the cable lengths.
[ Adrian  Mar 23, 2021 ]
Is it possible to use one remote to control both of these subs? it looks like they just use a standard ethernet (RJ45) connector for the remote, so could you just use a splitter to split the signal from one remote to have control of both?
[ Nick  Feb 18, 2021 ]
1 answer
The remote level controller cable has RJ-25 connections on each end. We have not tested a splitter to know if one controller will operate two of these subwoofers. I recommend contacting JBL's support using 800-336-4525 to check with them if it will work
[ Paul  Mar 09, 2021 ]  Staff
I have little room under the seat and the unit would be quite cramped with little to no air space. Is that going to be an issue?
[ LAVERNE  Feb 15, 2021 ]
2 answers
This powered subwoofer is designed to be installed in tight spaces without causing any issues and sounds like it will work under the seat in your vehicle.
[ Paul  Mar 04, 2021 ]  Staff
I made a custom installation on my 2021 rav4, I made an adapter plate and installed the powered subwoofer on the rear cargo area...
[ MIGUEL A.  Mar 01, 2021 ]
This looks exactly like the Infinity BassLink sm2. Are they one, and the same?
[ molinholin  Jan 27, 2021 ]
2 answers
no and be careful it doesn't fit under the mustangs seat
[ RAYMOND  Jan 27, 2021 ]
Both Harman Audio. Probably.... I'd bet they both have a bit of a house sound. Infinity tends to be a bit brighter, JBL tends to have a thicker mid-bass, though they frequently use the same components, with different crossovers after Harman/Samsung bought them. I own the JBL in an old pickup that I wanted to keep looking relatively stock, and not put much money into improving a 40-yo stereo. It's a great little sub for "fill" in the low end. Don't expect your friends to hear you a half mile away.
[ Andrew  Jan 27, 2021 ]
Do you need an amp for this JBL Basspro SL2?
[ Fernando  Oct 26, 2020 ]
7 answers
No...It has its own amp built in. Of course the receiver has its own amp as well. No separate amp required.
[ MATTHEW  Oct 26, 2020 ]
No it has an amp installed with the sub.
[ Jerry  Oct 26, 2020 ]
This has a built in amplifier
[ NATHAN  Oct 26, 2020 ]
[ RAYMOND  Oct 26, 2020 ]
[ CORTNEY  Oct 26, 2020 ]
It have a built in amp already. So no.
[ Tuyen  Oct 26, 2020 ]
It's a powered sub, so... No.
[ Andrew  Oct 26, 2020 ]
[ JOSH ZUVER  Oct 24, 2020 ]
1 answer
It will be easier to install two of these using a dual amp wiring kit for the power. The signal is be a different story and is dependent on the system in the vehicle, and your preferences for the sound clarity and control. I recommend contacting an advisor by calling 1-800-324-9695 to get a personal recommendation on all that installation gear
[ Paul  Nov 22, 2020 ]  Staff
Is it possible to have 2 of these JBL Basspro SL2 in my 2017 Jeep Wrangler? If so, what (accessories, kits, etc.) would I need to make it work?
[ Carlo Raffaele  Aug 25, 2020 ]
1 answer
Hi Carlo, thank you for your question. We will need to gather a little more information regarding your factory setup, and if you are currently using, or plan to use an aftermarket stereo for connection of a powered subwoofer. Please chat with us online or by phone 1-800-324-9695, we will be happy to go over this with you.
[ Jess  Sep 13, 2020 ]  Staff
What the difference between SL2 and previous gen?
[ Justin  Feb 28, 2020 ]
1 answer
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
[ Krissy  Mar 13, 2020 ]  Staff

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