MTX Audio Thunderform DDXP201U (Black, Unloaded)

Dodge Dakota Club Cab 1997-2004 Unloaded Dual 10" Bass Slammer Subwoofer Enclosure


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Bass Slammer unloaded, vehicle-specific enclosures are inspired by the same technology incorporated in MTX ThunderForm enclosures. Bass Slammer enclosures are available for many of the hottest-selling vehicles on the market and are made of a high-density polyethylene resin to ensure that you don’t get any of the “ping” common in fiberglass enclosures. The resin is color-matched to the interior color options available for each vehicle.

Authorized MTX Dealer

Enclosure Features:

  • Unloaded Dual 10" Thunder Form Subwoofer Enclosure
  • For 1997-2004 Dodge Dakota Club Cab Trucks vehicles
  • Designed for under rear jump seat (replaces OEM tool tray)
  • Install hardware supplied
  • Box volume: 1.8 cubic feet
  • Dimensions: 18-1/2"D x 57-1/2"W x 8-1/4"H
  • Also can be found as: MTX Audio Thunder Form DDX-P201U
  • Authorized Internet Dealer
  • 1-year Manufacturer’s warranty

Subwoofer Specifications

Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.

Enclosure Specifications

Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.
Dodge Dakota
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Vehicle Specific
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Spring posts
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Type of Enclosure
Some of our Vehicle Specific enclosures are loaded with a subwoofer and an amplifier, some are only loaded with a subwoofer, while some are empty boxes.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Denison, IA

box for 01 dakota

January 12, 2010

Its a great box if you want the sound quality of subs and also the use of the back seat. It took a little while to put in because you have to take out the back side panels to be able to unfasten the stock compartment. I put 2 MTX thunder-thin series subs in and they fit perfectly and produce much better sound than the two 12" JL Audio W1s i had before that just sat ontop of my seat in a custom box i built. The only real downfall of this box is that it is completely plastic and at higher volume levels there is much more rattling than I would like but that is pushing the subs pretty hard. Also the box rises the seat to a slight incline from its stock position. Overall its a great buy and I recommend it to anyone who wants the use of their back seat but doesn't want to give up sound quality.

16 of 20 found this helpful

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Atlanta, GA

Cool sub box

August 23, 2010

1) cool design, allowing full function of back seats
2) its made of sturdy plastic
3) has a spot for the truck jack
4) includes gaskets & screws for the subs & mounting bolts
5) it makes the back seat rise at a 15-20 degree angle & a half inch height increase, it more comfortable for adults.

1) mounting holes don't line up exactly, need to angle the mounting bolts when installing.
2) the radius for subs to be installed from the top, is very small. It needs to be wider.
3) the wire terminal is setup for bridged connection. I had to buy another terminal to a regular setup.
4) its made of plastic
5) this box is mainly or only made for SHALLOW SUBS.
6) not much room for sub
7) the mounting screws do not screw down all the way, so I'm needing to buy more washers to make it bolt down securely
8) too much for a box made of plastic & measurements inaccurate

Other thoughts:
I bought 2 Kicker 07CVR104, it does not fit. After contacting Kicker & MTX about subs that may fit this box, I get the run around. To be safe, buy only a shallow-mount sub for this box. I then bought Kicker CVT104 (10CVT104), it fits (had to press really hard on the mounts to get it flushed). I think MTX had grad students design the measurements for this box. I would recommend this box ONLY since it allows full function of the back seat (this is a must when you have a family). The wire terminal i bought had 2 pairs of terminals. This terminal is very rare, I found it only at Amazon

13 of 17 found this helpful

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pittsburgh, pa

quality product

August 19, 2010

I have this setup in my truck, it is a great sub enclosure. They pound hard and don't rattle the truck at all if you know how to set up the subs. it is a bit hard to install considering you have to basically tear down the rear interior of the truck. I love my subs and all my friends say they can hear me coming. I would most definitely recommend this to a friend, the only downfall is you need to find a place to put the amp.

14 of 19 found this helpful

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Browse 1 question and 2 answers
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Why did you choose this?
Sonic Electronix Store
I like the product
Wilhelmina t on Jan 3, 2017
I chose this model because I wanted to research and install my own subwoofers and amp for the enclosure. I'm "restoring" a 2004 Dakota 4x4 with 120,000 miles on it and after getting the engine and suspension dialed in (along with some shiny things) I now need better sound!
Joseph H on Mar 7, 2015

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: MTX Audio Thunderform DDXP201U (Black, Unloaded)

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MTX Audio Thunderform DDXP201U (Black, Unloaded)

Dodge Dakota Club Cab 1997-2004 Unloaded Dual 10" Bass Slammer Subwoofer Enclosure


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