Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience

$249.95249.95 each

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The easiest way to add high-output, low-distortion bass to any car audio system is with the JBL® GT-BassPro12 – a powered subwoofer that pumps out car-rocking bass through a design so cool you won’t want to hide it in your trunk. Simply put, it’s a complete subwoofer system for your vehicle. Its patented Slipstream port design delivers deep, bottom-end bass while minimizing port noise. Its woofer features improved motor-structure venting for thermal protection and a progressive spider to ensure superior mechanical reliability even at the highest output levels. Its amplifier delivers maximum power and the flexibility to connect to any factory-installed or aftermarket head unit. And with the system’s included remote level control, which lets you adjust the bass level from the driver’s seat, the only time you’ll need to stop is for gas.


General Specifications

Size 305mm; (12")
Type Enclosed

Audio Specifications

Frequency Response 35Hz-120Hz
Power Handling (RMS) 150W
Sensitivity 50mV – 4V (line-level input); 0.4V – 16V (speaker-level input)
Power Handling (Peak) 450W
Peak Power 450W
Amplifier Power 150 watts RMS; 450 watts max power
Max Current Draw 13.5A
Idle Current Draw less than 500mA
Crossover Frequency 70Hz – 120Hz


Weight (lb) 38.6
Depth (in) 12
Depth (mm) 305
Weight (kg) 17.5
Width (in) 22-7/16
Height (in) 14-1/2
Height (mm) 360

Woofer Specifications

Crossover Slope 12dB
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 1 MB

Spec Sheet (EN)

English 812 KB
  • (1) GT-BassPro12 Enclosed Subwoofer
  • (1) Owners Manual

Manuals & Downloads

The latest owner's manuals, quick start guides, and documents.

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1 Year Warranty

Note: the Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.

Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship. Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.

Call us: 1.800.336.4525

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GT-BASSPRO12 is rated 4.1 out of 5 by 14.
Rated 5 out of 5 by from Sound is amazing I'm am so happy with this buy. One of the best products ever!
Date published: 2017-05-24
Rated 5 out of 5 by from Great bass! I bought this a while ago and love it it has great bass and use it always I definitely recommend this
Date published: 2017-04-29
Rated 5 out of 5 by from All around, Great This product is all around amazing. Loud, clear, and deep bass. Easy to install. And the remote control and the built in amp is something that everyone wishes they had. It has a fresh look sitting in the trunk. I would highly recommend it.
Date published: 2017-03-20
Rated 5 out of 5 by from Perfect All-in-One since i got rid of my old subs & amp, i was looking for a set up. JBL, is able to provide this all in one set. None of all the hassle of looking up a sub, amp, & box. its all provided. sounds great too!!
Date published: 2017-01-25
Rated 5 out of 5 by from Wowwed by both the performance and reliability Been using the JBL GT-BassPro for the last 2 years and am very satisfied with its performance and durability. I like my music cranked and this subwoofer gives me what I want with no complaints. From Classical to AC/DC it fills the bill in my 300C.
Date published: 2016-08-09
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What wiring kit do I need for this? I don't know the slightest thing about this stuff so an exact name or a link would be very appreciated.

Asked by: Brennen
If your car audio system’s head unit has front or rear stereo line-level outputs: Use a stereo RCA audio cable to connect the GT-BASSPRO12's line-level input connectors to the head unit’s front or rear left and right line-level outputs. If your car audio system’s head unit has a line-level subwoofer output: You can connect it to either of the GT-BASSPRO12’s line-level input connectors. If your car audio system’s head unit does not have line-level outputs: Connect the GT-BASSPRO12’s high-level inputs to either the front or the rear speaker outputs of your car audio system’s head unit (splice crimps not included). Make sure to connect the car audio system’s “+” speaker wires to the “+” wires on the GT-BASSPRO12’s high-level input wiring harness (the gray and white leads without stripes); connect the car audio system’s “–” speaker wires to the “–” wires on the GT-BASSPRO12’s high-level input wiring harness (the leads with black stripes). Use least #20 AWG (0.8128mm) speaker wire for speaker-level input connections.
Answered by: Miko at Customer Service
Date published: 2017-12-07

Does it have an inbuilt 2 channel or 4 channel amplifier? if it has a 4 channel amplifier then it can be connected to the other speakers in the car?

Asked by: Namin
The built-in 150W RMS amplifier in the GT BASSPRO-12 is dedicated to power only the subwoofer. It does not have other outputs that you can connect other speakers to.
Answered by: Ren at Customer Service
Date published: 2017-12-02

Im just curious what the best amp installation kit would be for this sub Thanks!

Asked by: Chris111
The GT-BASSPRO12’s Owner’s Manual available on this product page under Manuals & Downloads would indicate the recommended wiring gauge to use. This will also help you determine the type of kit to use depending on your existing car system.
Answered by: Ren at Customer Service
Date published: 2017-12-02

Can you buy the remote level control?

Asked by: Reginald
The part number of the GT-BASSPRO 12’s remote level control is “PA072000A01”. Please submit a case at jbl.com/contact us and our Customer Service Team will be glad to assist you with price and availability.
Answered by: Ren at Customer Service
Date published: 2017-12-08
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