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MTX ThunderForms

Custom-fit enclosure for select 1999-02 GMC Sierra and 1999-07 Chevrolet Silverado Extended Cab pickups (Charcoal)

| 4 questions - 4 answers

Item #: 236CXP2CTN

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MTX ThunderForms

Overview

Our take on the MTX ThunderForms

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden corners of your vehicle except great bass. But with custom ThunderForm enclosures, you can fill the nooks and crannies of your car, truck, or SUV with low tones that stand out.

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden corners of your vehicle except great bass. But with custom ThunderForm enclosures, you can fill the nooks and crannies of your car, truck, or SUV with low tones that stand out.

MTX engineers evaluate the "sonic signatures" of top-selling vehicles so they can design ThunderForms as custom acoustic matches. With "rotational molding," MTX ensures that each ThunderForm fits and blends inconspicuously into your vehicle. They're made of high-density polyethylene resin to curb resonances and deliver bass that's tight, hard-hitting, and way down low.

This molded MTX ThunderForm comes loaded with two premium-quality 10" Terminator subwoofers. It installs in your 1999-02 GMC Sierra or 1999-07 Chevrolet Silverado Extra Cab pickup under the rear seat on the driver's side. The enclosure is seamless and airtight, with the correct internal volume to yield optimum bass response from the subwoofers. Hardware is included. For the ultimate in Thundering bass, drive one with an MTX Thunder amp.

What's in the Box:

  • ThunderForm enclosure loaded with two 10" Terminator subwoofers
  • Mounting hardware
  • Installation instructions

Product Highlights:

  • custom-fit subwoofer
  • enclosure mounts under rear seat on driver's side
  • high-density polyethylene resin enclosure
  • two 10" Terminator 4-ohm subwoofers
  • power range: 100-400 watts RMS (800 watts peak power)
  • warranty: 2 years
  • Our 60-day money-back guarantee
Reviews

MTX ThunderForms Reviews


Details

Hands-on research

What's in the box?

Download the MTX ThunderForms manual

  • ThunderForm enclosure loaded with two 10" Terminator subwoofers
  • Mounting hardware
  • Installation instructions

Product Research

Features

Vehicle-Specific Custom Enclosure: This MTX ThunderForm enclosure is specifically designed to fit select full size GM extra cab pickups. Please refer to the Crutchfield Car Selector to confirm fit for your vehicle.

Enclosure: The ThunderForm enclosure is made of molded high-density polyethylene resin, which dampens resonance and is rigid enough to resist flexing. The color of the enclosure matches factory GM colors. It is an acoustic suspension (sealed) chamber.

Mounting Location: This enclosure is designed and molded to mount under the rear seat. The jack does not need to be relocated. Note: The provided dimensions are taken at the widest points of the enclosure. Keep in mind that these enclosures are custom made to fit in this particular vehicle, so the enclosure will fit properly in only one specific location.

Woofers: The ThunderForm enclosure is loaded with two 8Ω, 10" MTX Terminator subwoofers. The subwoofers are wired in parallel to a single terminal, presenting a 4Ω load to your amplifier.

Tools Required: The manual provides this list of required tools:

  • Powered Screwdriver
  • #2 Phillips Head Bit
  • Wire Cutters
  • T50 Torx
  • 5/16" Wrench
  • Terminal Crimper
  • 6" Bit Holder Extension
  • 7mm Nut Driver
Note: The manual provided is for both the amplified and non-amplified versions of this ThunderForm. Some of the tools may not be needed for this non-amplified ThunderForm.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

4 questions already asked

I forwarded your question to an Advisor and they responded with the following: We do have an empty version of the dual 10" MTX Thunderform. We have it in both Black, Charcoal and Tan, but you would still have to put in your vehicle information online to make sure it will fit in your vehicle. You can view the empty 10" Thunderform here: http://www.crutchfield.com/p_23625RB20U/MTX-ThunderForm-Unloaded-Enclosure-Black.html?tp=61653 If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Mar 17, 2015 ]  Staff
This actually protects the domes and actually I have these in my sons truck and I have the ones that fit upright behind the back of the back seat of mine and I believe his bass is deeper. [ JASON  Aug 13, 2014 ]
This box does not come with an amplifier. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Jeff  May 08, 2014 ]  Staff
We show the dimensions as 48.5" Wide x 10.5" High x 15.5" Deep. [ Jeff  Feb 06, 2014 ]  Staff
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