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JBL BassPro Micro

8" compact powered subwoofer enclosure

Item # 109BASPROM

You want some bass in your vehicle, but you also need to be able to maximize your cargo space every once in a while.

You want some bass in your vehicle, but you also need to be able to maximize your cargo space every once in a while.

California customers:
Please click here for your Proposition 65 warning.

In stock

About the JBL BassPro Micro

Bass that gives you cargo space

You want some bass in your vehicle, but you also need to be able to maximize your cargo space every once in a while. JBL's BassPro Micro powered sub gives you the bass you need in a compact package with a unique twist! You can undock the speaker enclosure from the permanently-mounted amplifier base for instant cargo room when it's needed. 

Bass that gives you cargo space

You want some bass in your vehicle, but you also need to be able to maximize your cargo space every once in a while. JBL's BassPro Micro powered sub gives you the bass you need in a compact package with a unique twist! You can undock the speaker enclosure from the permanently-mounted amplifier base for instant cargo room when it's needed. 

Versatile amplifier

The BassPro Micro features a Class D amplifier that delivers 140 watts RMS to its 8" subwoofer for surprisingly powerful output. The amp includes speaker-level and line-level inputs to allow you to connect the sub to your vehicle's audio system. JBL includes controls for input sensitivity, crossover frequency, and phase, along with a bass EQ with 9 dB of boost, making it easy to match this sub up with your speaker system.

Double up

Need more bass? You can daisy-chain this sub with another BassPro Micro to give you even more thump. The BassPro Micro gives you the bass you're looking for, and the dockable enclosure gives you extra space when you need it.


Product highlights:

  • powered subwoofer with heavy-duty ABS plastic enclosure
  • 8" subwoofer
  • Class D amplifier (140 watts RMS)
  • sub enclosure separates from amplifier base to accommodate cargo
  • 10-gauge amp wiring kit required (sold separately)
  • adjustable low-pass crossover (50-120 Hz)
  • bass boost (0 to +9 dB at 65 Hz) and phase switch
  • speaker and line-level inputs
  • frequency response: 35-120 Hz
  • dimensions: 16-3/16"W x 10-7/8"H x 7"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the box:

  • Amplifier base with 15A ATM mini-blade fuse installed
  • Subwoofer enclosure
  • 2 RCA adapters
  • 2 Thumbscrews
  • 4 Self-tapping screws (length 1")
  • 4 Flat washers
  • Quick Start Guide

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Crutchfield response

<< >>

More details on the JBL BassPro Micro

Pat M.

Features & specs

Enclosure Type Sealed
Finish Material ABS
Grille Metal
Connector Type RCA (amp) Dock (sub)
Bi-amp Inputs No
Woofer Size (inches) 8
Woofer Material Not given
Passive Radiator ---
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 35-120
Amplifier Power (RMS) 140 watts
Maximum Wattage ---
Sensitivity ---
Impedance ---
Second Voice Coil Impedance ---
Crossover Point 50-120

Product Research


Overview: The JBL BassPro Micro is a dockable powered subwoofer for your vehicle. The low-profile 140-watt (RMS) amplifier is built into the base, and the ABS sub enclosure docks on top of the amp/base. The subwoofer can be easily removed if you need extra cargo room.

Mounting: The amplifier should be permanently mounted to a flat surface in your vehicle using the included hardware. Although you will mount the amplifier base without the enclosure docked, you should first test-fit the entire assembly with the enclosure before securing it to the mounting location. The enclosure docks to the amplifier base in either direction, and is secured with two thumbscrews.

Connections and Controls: All of the controls and connections are located on one side of the base for convenient access. Four spring-loaded docking pins are provided on the top of the amplifier base for connecting to the subwoofer enclosure when it is docked.

  • Connections:
    • Power/Ground/Remote Turn-on: Screw terminals are provided for +12V, Ground, and Remote Turn-on. 10-gauge power and ground wire is recommended. A flat head or Phillips head screwdriver is needed to tighten/loosen the screw terminals.
    • Audio In: These stereo RCA jacks will accept line-level or speaker-level signals. For speaker-level inputs, you can connect the left and right speaker wires to the included RCA adapters before connecting.
    • Remote: RJ-25 modular jack for connecting the optional Harman RBC Remote Bass Control
    • Fuse: 15A ATO mini-blade fuse installed
    • Link: 3.5mm Audio link connection for daisy-chaining two BassPro Micro systems together. This prevents you from having to run a separate signal cable from the head unit to the second unit.
  • Controls:
    • Auto Turn-on: When the speaker level inputs are used, the system can automatically turn on and off by sensing the voltage on the speaker input. After 3 minutes of no audio, the unit will turn itself off. If you prefer, auto turn-on can be turned off, so the amp turns on/off using the wired remote terminal. The auto turn-on feature does not operate when the preamp level inputs are used.
    • Input Level: 3-way switch; Low (for preamp level inputs), Hi1 or Hi2 (for speaker level inputs)
    • Gain: Rotary control for matching the amplifier to the output of the source unit (requires flat head or Phillips screwdriver)
    • Crossover (low-pass filter): Rotary control for filtering out unwanted high frequencies so the unit plays only bass (adjustable from 50Hz to 120Hz 12dB/octave)
    • Bass EQ: Rotary control for boosting bass frequencies up to +9dB, centered at 65 Hz
    • Phase: 2-way switch for setting the phase at 0° or 180°
    • Link: 2-way switch for setting the Audio Link 3.5mm jack as an Input (slave) or an Output (master)


  • Frequency Response: 35Hz - 120Hz
  • Amplifier Power: 140 watts RMS
  • Maximum Current Draw: 14.5A (<800mA in standby)
  • Crossover Frequency: 50Hz - 120Hz
  • Bass Boost: +9dB at 65Hz
  • Dimensions:
    • Amplifier Base: Width 6-1/8" Height 1-3/8" Length 13-3/4"
    • With Enclosure: Width 7" Height 10-13/15" Length 16-1/4"
  • Weight:
    • Amplifier Base: 4.25 pounds
    • With Enclosure: 18.75 pounds

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Customer Q&A

8 questions already asked

If Splicing into rear speakers will I still have control over the car speakers without having affect on the sub eq?
[ Tripp  Jun 08, 2021 ]
2 answers
No. I have mine set up that way, I set the eq on my rear speakers first without the sub then adjusted the sub
[ WILLIAM  Jun 10, 2021 ]
If you are using eq on the speakers, it will translate to the sub, because it's using the same signal. You can then adjust the levels and crossover frequency on the jbl. I've used both with mine, but am now on the line level input from a new head unit, which is preferable.
[ DAVID  Jun 08, 2021 ]
Will this sub fit behind my seat in my 2007 chevy silverado regular cab?
[ Jeff  Apr 06, 2021 ]
1 answer
We do not have the measurements of the space behind the seat in your pickup. This needs 16-3/16" wide x 10-7/8" tall x 7" deep space to fit.
[ Paul  Apr 18, 2021 ]  Staff
Why does the power light flash? Speaker is not working
[ Jason  Sep 20, 2020 ]
2 answers
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Oct 05, 2020 ]  Staff
It's not hooked up correct, or it's not grounded. I think it's most likely the ground. I don't know how your setup looks so my answer is a broad one.
[ Elbridge  Sep 21, 2020 ]
My car battery is weak is that ok if I'm using bass oro micro.. or need to change car battery??
[ Byiju  Sep 20, 2019 ]
1 answer
Not sure what you mean by weak battery. A standard 12v car battery will power this device. No need for a separate battery.
[ brianfranklin  Sep 20, 2019 ]
Need powerful battery???
[ Byiju  Sep 20, 2019 ]
1 answer
No. I installed in my EV and tapped directly into the drive battery. For an ICE vehicle, the existing 12v battery will power this just fine.
[ brianfranklin  Sep 20, 2019 ]
Do I have to use RCA cables or can I use the Link Audio-In from an AUX cable from a cell phone or something to send in the audio signal instead of RCA's?
[ Jerry  Feb 19, 2019 ]
2 answers
I used the RCA 's , that was the way the advisor from Crutchfield suggested, but I think you can get a signal from one of your rear speaker wires but I would ask a professional at Crutchfield their opinion after explaining what type of system you are setting up.
[ Joanne  Feb 21, 2019 ]
You'll need an RCA cable to send signal to the JBL. I tapped into my speaker wires coming out of the factory head unit. That way the speaker works regardless of what input source is being played (radio, satellite, CD, Aux, etc).
[ brianfranklin  Feb 21, 2019 ]
Would output decrease if i daisychain 2 together?
[ Brandon  Apr 03, 2018 ]
1 answer
Not at all! If anything, you should expect an increase in output by daisy-chaining two of the BassPro Micro's together. JBL also includes a convenient 3.5mm "Audio link" connection to make daisy-chaining a simpler process. For more details or to discuss further, please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
[ Larry  Apr 10, 2018 ]  Staff
Can I install this with my factory head unit?
[ Ross  Feb 24, 2018 ]
1 answer
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Krissy  Mar 01, 2018 ]  Staff

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