Garage
Shop

See all parts that fit your 1978 TR8

JBL GT-BassPro12

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

JBL
Shop all JBL
Product videos
highlight-star-icon

• 12" GT Series Subwoofer
• GT Series Mono block Car Amplifier
• 450W Peak
• 150W RMS
• 12" Single Ported Subwoofer Enclosure
• Variable low-pass filter (40-200 Hz, 24 dB/Octave)

Learn more about the gtbasspro12am

We apologize

This item has been discontinued


Loading...
TS-A1081F main

Pioneer TS-A1081F

460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers

3
-18.18%

$90.00

List price $110.00

DB402 main

Polk Audio DB402 (DB 402)

270W Peak (90W RMS) 4" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

4
-9.99%

$90.00

List price $99.99

51KSC404 main

Kicker KSC4 (51KSC404)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

3
-16.67%

$99.99

List price $119.99

C1-400x main

JL Audio C1-400x

70W RMS 4" C1 Series 2 Way Coaxial 4-ohm Car Speakers

8
Limited time!
R14X2 main

Rockford Fosgate Prime R14X2

120W Peak (60W RMS) 4” Prime Series 2 Way Coaxial 4-ohm Speakers

14
-7.69%

$59.99

List price $64.99

ZXI-44 main

DS18 ZXI-44

300W Peak (100W RMS) 4" ZXI Series 2-way 4-ohm Coaxial Car Speakers

C2-400X main

JL Audio C2-400x

70W RMS 4" C2 Series 2-Way Coaxial 4-ohm Car Speakers

9
Stage3 427F main

JBL Stage3 427F (STAGE3427FAM)

300W Peak (60W RMS) 4" Stage3 Series 2-Way Coaxial 3-ohm Car Speakers

3
-22.23%

$69.95

List price $89.95

P142 main

Rockford Fosgate Punch P1 P142

120W Peak (60W RMS) 4" Punch Series 2 Way Coaxial 4-ohm Speakers

11
Limited time!
46CSC44 main

Kicker CSC4 (46CSC44)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

1
-29.45%

$59.96

List price $84.99

Product Highlights


• 12" GT Series Subwoofer
• GT Series Mono block Car Amplifier
• 450W Peak
• 150W RMS
• 12" Single Ported Subwoofer Enclosure
• Variable low-pass filter (40-200 Hz, 24 dB/Octave)

Description


JBL brand icon

Authorized dealer


Ready to go Bass

JBL's GT-BassPro12 powered subwoofer enclosure gives you the bass you and your vehicle deserve. Now you'll really be able feel your music's kick as you drive down the road. JBL designed this all-in-one bass system to shine in any car. It has been tuned for tight and responsive low notes.




The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.


Subwoofer Specification:

  • 12" GT Series subwoofer
  • Power Handling:
    • Peak: 450 watts
    • RMS: 150 watts
  • Subwoofer material: Polypropylene
  • Woofer surround type: Butyl Rubber
  • Oversized, stacked magnets to increase magnetic flux
  • Frequency response: 35Hz – 120Hz

Amplifier Specifications:

  • GT Series Mono block Car Amplifier counter sunk into back panel of enclosure
    • RMS Power Rating: 150 watts
    • Max power output: 450 watts x 1 chan.
  • Wired 16-1/2' remote bass level control included
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Auto turn-on
  • Nickel-plated RCA level inputs
  • Screw terminals for power, ground, and remote turn-on
  • Input sensitivity:
    • Low level: 50mV-4V
    • High level: 0.4V-16V
  • Variable low-pass filter (40-200 Hz, 24 dB/octave)
  • Subsonic filter (24 dB at 15 Hz)
  • Phase Shift: 0-180°
  • Damping factor: 200
  • Frequency response: 35-120 Hz
  • Eight gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.

Enclosure Specifications:

  • 12" Single Ported Subwoofer Enclosure
  • Round Slipstream port
  • Finish Material: Carpet
  • Dimensions: 12"D x 22-1/2"W x 14-5/8"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Best selling similar products

NPKG212 small

NVX NPKG212 Dual 12" Bass Package

• 12" Loaded Dual Subwoofer Enclosure with Amplifier
• 500 watts RMS
• Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

(11)

$374.99

List price $419.99

MB210SP small

MTX Audio Magnum MB210SP

• 10" Amplified Loaded Subwoofer System
• 400 watts RMS
• Built-In Class D amplifier
• Variable bass boost
• Speaker-level inputs

(65)

$269.95

List price $299.95

F-150EX-09A small

MTX F-150EX-09A

• 10" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D amplifier
• Speaker-level inputs
• External bass control

$719.95

List price $637.95

W10S4_2, BXD3K, BAK42BK small

(2) Alpine W10S4 10" Bass Subwoofers + Belva 3000W Amplifier + 4 Gauge Amp Kit

• 750W Max
• 250W RMS
• Polypropylene-Mica cone
• High-excursion poly-foam surround
• High-strength custom steel frame
• Progressive Wavelit Ribs (P.W.R.) cone design

(82)

$364.88

List price $489.98

MBQBRO-302 small

MB Quart MBQBRO-302

• 12" Amplified Loaded Subwoofer System
• 400 watts peak
• Built-In class D amplifier
• Variable bass boost
• Speaker-level (high-level) inputs (Requires adapter like the Kicker KISL)

$679.99

List price $899.99

RTP8A small

MTX Audio RTP8A

• 8" Amplified Loaded Subwoofer System
• 120 watts RMS (360 watts Peak)
• Built-In amplifier
• Variable bass boost
• Speaker-Level Inputs
• EBC wired remote bass level control

(8)

$199.95

List price $219.95

JBLBassPro 12 small

JBL BassPro 12

• 12" Amplified Loaded Subwoofer System
• 150 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs

(1)

$364.95

List price $419.95

TNP212D2 small

MTX Audio TNP212D2

• 12" Amplified Loaded Subwoofer System
• 400 watts RMS
MTX TN250/1 amplifier included
• Selectable bass boost
• Speaker-level (high-level) inputs (adapter included)
• Wired remote bass level control

(156)

$369.95

List price $399.95

51PTRTP10 small

Kicker PTRTP10 (51PTRTP10)

• 10" Amplified Loaded Subwoofer System
• 400 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

$499.99

List price $549.99

Specifications & Details


Subwoofer Amplifier Power Specifications
RMS Power @ 4 ohms
150 watts x 1 channel
Peak Power Output
450 watts x 1 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Maximum Input Gauge Size
8 AWG
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
40 - 200 Hz
Subsonic Filter
24 - 15 Hz
Bass Boost
0 - 12 dB
Remote bass/level controller
Yes
Fuse Rating
25A x 1 
CEA-2031 Compliant
No
Subwoofer Specifications
Subwoofer Size
12"
RMS Power Handling
150 watts
Peak Power Handling
450 watts
Woofer Surround
Butyl Rubber
Woofer Composition
Polypropylene
Frequency Response
35 - 120 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Bandpass Ported
Number of Subwoofers
1
Box Style/Shape
Hatchback Style, Angled Back
Height
14-1/2"
Width
22-7/16"
Depth
9-1/8"
Second Width
12"
Wood Thickness
5/8"
Box Exterior Color
Black
Box Finish
Carpet
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

GT-BASSPRO12AM

Weight:

37.00lbs

Internal SKU:

gtbasspro12am

Internal Product ID:

45053

Product and How-to Videos


Customer Ratings & Reviews


JBL GT-BassPro12 thumbnail image

5 star
50%
4 star
50%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.8
Features
4.8
Design
4.8
Usability
4.8

Customer Reviews

Sort by:

Loading...

jbl basspro 12

Awesome bump and sweet set up. Easy installation and satisfaction through the roof. Simple and stylish, recommend to anyone looking for a good ride and good music.

By Hondakid32 on July 18, 2012

40 found this helpful


Great all-in-one sub for the money

Put this sub into the trunk of my Prelude because I wanted some better lows. Easy installation due to built-in amp. Sounds good. Would sound better in a larger box but then it wouldn't fit in my small car so that was a worthy trade-off. Plays pretty loud -- not really loud enough to hear outside the vehicle but what do you expect from a single twelve in sub? Recommended.

By Mark on September 5, 2012

39 found this helpful


JBL GT-Basspro12

Amazing sound and quality in a compact like box. Built for quaility and the bass fills my vehicle like nothing else.

I am sincerely very happy with this product, it has made my lows even pound hard and makes my hair on the back of my neck stand up!

I totally recommend this product for people who are seeking a loud robust sound without the sacrificing your trunk.

By Izzy Moralez on June 17, 2013

37 found this helpful


Fits an old BMW 2002

My son love the power and still has truck space remaining.

By Geroge on September 17, 2013

38 found this helpful




No picture

Clif Designs CD60.2DLX Factory Refurbished

2-Channel Amplifier

$199.99

List price $649.99

1SL15-2.0-GRAY small

Sonic Sub Box: 1SL15-2.0 (Gray)

Single 15" Sealed MDF Enclosure

(2)

$29.99

List price $59.99

CEX12TE small

Audiobahn CEX12TE

Triple 12" Subwoofer Enclosure Custom Fit for a Ford Expedition

$99.99

List price $249.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1978 Triumph TR8

2004 Subaru Impreza

2017 Dodge Durango

2015 Dodge Viper

2005 Chrysler Pacifica

2018 Ford Explorer

2011 BMW 760Li

2010 Dodge Ram 2500

2013 Ford Fiesta

2003 BMW 540i

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.