JBL SUBBP12AM + Free NVX Sound Dampening Kit

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

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• 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 subbp12am_sdrf20
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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.

JBL BassPro 12

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System
Quantity: 1

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


Five Sheets of 18" x 32" (20 sq. ft.) Tri-Layer Sound Damping Material (Sound Deadening) Adhesive Black Foam Rubber
Quantity: 1

Product Details:

  • NVX SDRF20
  • Five Sheets of 18" x 32" (20 sq. ft.) Tri-Layer Sound Damping Adhesive Black Foam Rubber
  • Tri Layer Design: Combines 100% Butyl Rubber, aluminum Foil, and Foam
  • Total Thickness: 1/8 inch
  • Easy to install self adhesive sheets
  • Built to withstand temperatures of -40℉ to 300℉
  • Perfect for applications on the roof, firewall, floor, quarter panels, doors, and more
  • Offers flexible and lightweight construction
  • Reduce rattles and shakes in your car
  • Increase SPL as well as overall sound quality and output of your car audio system
  • Combine this kit with the NVX SDRLR1 Sound Dampening Rubber Roller for a quick and easy installation
  • Dimensions: 18"L x 32"W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

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
Number of Channels
1 - Mono
Maximum Input Gauge Size
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
40 - 200 Hz
Subsonic Filter
24 - 15 Hz
Low-Level Input Sensitivity
Bass Boost
0 - 12 dB
Remote bass/level controller
Fuse Rating
25A x 1 
CEA-2031 Compliant
Subwoofer Specifications
Subwoofer Size
RMS Power Handling
150 watts
Peak Power Handling
450 watts
Woofer Surround
Butyl Rubber
Woofer Composition
Magnet Type
Frequency Response
35 - 120 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported Bandpass
Number of Subs/Speakers
Box Style/Shape
Hatchback Style, Angled Back
Total Box Volume
Second Depth
Wood Thickness
Number of Terminals
Terminal Type
Box Exterior Color
Box Finish
Tuning Frequency
Final Wired Impedance
Amplifier Wiring Kit
Is Amplifier Wiring Kit included?
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



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Customer Ratings & Reviews

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Better than EVER

The following review is for SDRF20, which is a part of the bundle you are viewing.

I really like the upgrades over the previous design. The rubber may be a little thinner but the foam definitely makes up for it. I love how easy it is to manipulate into the small spots on the installation to make it so much easier. I love the direction NVX took adding the foam to the design.
Keep it up guys.

By Anonymous on July 2, 2019


found this helpful.

hits hard

The following review is for BassPro 12, which is a part of the bundle you are viewing.

love my base package. it came with an amp and it was an easy install. It really upgraded my factory sound and it hits super nice and loud.

By Wichi on November 29, 2021


found this helpful.

Nice improvement

The following review is for SDRF20, which is a part of the bundle you are viewing.

Using this product in the door areas for mid bass improvement. I used 2 of the SDBBP40 (without the third layer of foam) to cover the whole inside of the vehicle. When I ran out of material and needed a bit more for the doors, I was thrilled to Find NVX added a dampening material with the foam backing. This is a NVX install all the way: speakers, amps, cables...

By Manic Mike on January 25, 2020 checkmarkIcon Verified purchase


found this helpful.

Great value, excellent product

The following review is for SDRF20, which is a part of the bundle you are viewing.

I'm not sure how there could be a complaint here. I was pleased with the quantity of material I received given the price I paid. It's extremely adhesive material and very easy to roll down. It's malleable, yet heavy. It worked very well for the trunk and rear doors, and I may need a smaller quantity to cover the front doors, but that's still a full car under $100. 5 stars.

By Andrew on January 18, 2020 checkmarkIcon Verified purchase


found this helpful.

Good product

The following review is for SDRF20, which is a part of the bundle you are viewing.

Decided to try this over the regular sound dampener due to the foam layer. So far it seems to be working and has minimized the rattling from my bass speaker in the trunk.

By Simeon on January 21, 2020 checkmarkIcon Verified purchase


found this helpful.

Works amazingly well, Super easy Install.

The following review is for SDRF20, which is a part of the bundle you are viewing.

This multi layer sound deadening is great. In the past I have used multiple layers to get the best results for my vans and this stuff combines them to cut install time in half. Noise inside my camper van is significantly cut making long drives much more pleasant. The sheet size is perfect to cover large areas. My only complaint is that some of the foam layer tore while rolling making it hard to get super clean look. But since most areas get hidden this is not a problem

By DonGor on October 14, 2020 checkmarkIcon Verified purchase


found this helpful.


The following review is for SDRF20, which is a part of the bundle you are viewing.

It work so good my trunk stop from shaking, and it was a great price

By Anonymous on December 9, 2019


found this helpful.

Best bang for your buck

The following review is for SDRF20, which is a part of the bundle you are viewing.

I would recommend this product because I feel it compares very greatly to other high end brands of their competition. The only negative thing I have to say about it is that the top foam layer can rip very easily if your not very careful and try to rush the install. There’s no smell compared to brands of the same price of similar items .

By Ant on July 19, 2022 checkmarkIcon Verified purchase


found this helpful.

Great Service!

The following review is for SDRF20, which is a part of the bundle you are viewing.

The NVX SDRF40 bundled package arrived in ONE day, of the offered 2-day FREE shipping to PA! You can’t beat that.
Accurate tracking information, great value and very fast shipping.
Consider me a return customer!

By Jeffery on May 19, 2023 checkmarkIcon Verified purchase


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SUBBP12AM, SDRF20 small

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Essential add-ons

100% Copper, 2-Channel True Spec 8 Gauge Amplifier Installation Kit



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Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)



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