MTX Audio TR5512-04

12" Single 4 ohm TR55 Thunder Round Series Subwoofer

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12" Single 4 ohm TR55 Thunder Round Series Subwoofer • 800W Max • 400W RMS • Impedance: Single 4 ohms • Polypropylene cone woofer • Die-cast, stamped aluminum basket

Learn more about the tr551204

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

mtx-551222 thumbnail

MTX 5512-22

OUR PRICE: $159.95

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Product Highlights

12" Single 4 ohm TR55 Thunder Round Series Subwoofer • 800W Max • 400W RMS • Impedance: Single 4 ohms • Polypropylene cone woofer • Die-cast, stamped aluminum basket



Authorized dealer

Thunderous Output

MTX Audio has taken subwoofer design and bass output to the next level with the introduction of MTX’s new thunder round subwoofers. These subs were designed with one goal, to bring the noise! Updating and upgrading the technology found in past MTX Super and High Performance Subwoofers, the TR Series has all the beef and brawn you need to be the loudest ride on the block. Whether you are looking to hit some sick SPL numbers or you want to roll with your favorite tunes, the Thunder Round subwoofers are up to the task.

The TR55 series subwoofers don't hold anything back and also deliver the heaviest beats. These subs have a glossy black metallic paint on the polypropylene dust cap with a raised MTX Audio gothic logo, stitched surround for durability, stamped basket design, and a rubber magnet boot to enhance the look of the subs when reversed mounted.

Authorized MTX Dealer
  • 12" Single 4 ohm TR55 Thunder Round Series Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Impedance: Single 4 ohm
  • Polypropylene cone woofer
  • Stitched NBR surround
  • Die-cast, stamped aluminum basket
  • 8-gauge nickel compression terminals
  • Rubber magnet boot
  • ALDS (Asymmetrical Linear Drive System)
  • Flat progressive spider
  • Extended pole piece for smooth, linear, piston like drive
  • Exclusive spider plateau venting cooling system
  • 1.75" High temperature single 4 ohms voice coil
  • 70oz. Magnet
  • Frequency response: 29-150 Hz
  • Sensitivity: 87 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Product history:

MTX 5512-22 thumbnail
(newest, current model)
MTX TR5512-04 thumbnail
(previous model, replaced by MTX 5512-22)
MTX T5512-04 thumbnail
(previous model, replaced by MTX Audio TR5512-04)

Subwoofer Wiring Guide

Wiring Guide to Wire 1 MTX Audio TR5512-04 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MTX Audio TR5512-04 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MTX Audio TR5512-04 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 MTX Audio TR5512-04 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details

Subwoofer Specifications
Subwoofer Size
Peak Power Handling
800 watts
RMS Power Handling
400 watts
Voice Coil(s)
Impedance (Per Voice Coil)
4 ohms
Frequency Response
29 - 150 Hz
87 dB
Xmax (millimeters)
13 mm
Subwoofer Design
Round / Circle
Main Cone Color
Woofer Composition
Woofer Surround
Nitrile Butadiene Rubber NBR
Subwoofer Grille
Optional (Accessory required and sold separately)
Re-Cone Kit Available
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Minimum Sealed Box Volume
1.25 cubic feet
Maximum Sealed Box Volume
1.25 cubic feet
Minimum Ported Box Volume
2.0 cubic feet
Maximum Ported Box Volume
2.0 cubic feet
Top-Mount Depth (Mounting Depth)
Cutout Diameter
Shallow Mount Installation
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



Model Number:




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Product and How-to Videos

  • MTX Thunder Round 5500 Car Subwoofer Loaded Enclosure Loud Sub Shows Bass Thumps
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews

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Customer Reviews

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Great Sub

I have two of these in a ported box and they pound. I have them running at 500watts total and I would put them up against any 12 inch sub near this price and it would be unmatched.

By Jordan on January 10, 2011


found this helpful.

Love these subs.

I hand built a home stereo and decided to go with the best of the best and which inevitably lead me to MTX. I installed two of these subs with two BASH 300W amps and have had no complaints except for my brother telling me he swears the house is going to fall down. I would recommend these subs to anyone.

By Schen on December 14, 2009


found this helpful.


I do reccommend this product to anyone who has an MTX AMP! I HAVE TWO MTX 12" 55 SERIES THUNDER AND THEY HIT SO HARD!! and they HAVE been hitting hard for over a year now.. i suggest you get a 400 watt mtx amp it hits other set blew out like two years after getting them, so i got a new set!! .have a good one.

By Chris from Florida on August 5, 2009


found this helpful.


Great speakers I recommend getting 2ohms and not 4ohms I had for almost a year until I blew them! My amp was too big.

By EDDIEMO on September 20, 2010


found this helpful.


i really enjoy the quality the subs have and they sound the same as if they were brand new

By brucey on January 13, 2011


found this helpful.

very nice for the money

i got this subwoofer for a pretty good price and it hits hard and sounds really clean. In my opinion tho it doesnt produce the same sound quality as a Kicker or JL Audio but it is stil really nice and loud. i recomend it to anyone who is on a budget but still wants something nice. Be careful not to blow them tho because I had one on a JH300 MTX Audio amp and blew it in just one day ha. just go low on the bass boost.

By stef on November 9, 2010


found this helpful.

Boooooom that has good SQL

This sub hits hard, dont know if its my tuning or the amp i have but sometimes the double bass can sound a little funky. I would recommend this sub to anyone plus i got a nice discount from one of the customer service guys.

By Travis on June 9, 2010


found this helpful.


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