Contact us
Close contact box
Connect ID #
803 935 222 3

Our hours

Connect ID #
803 935 222 3
Chat
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

We're sorry, chat is not available at this time.

Please enter your name.  
Please enter a valid email address. Why is this required?
Please enter your US phone number.  

For Tech Support, call 1-800-955-9091

Thank you, !
Our conversation will be emailed to
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

MTX ThunderForms

Custom-fit subwoofer for 2000-14 Ford F-250/F-350 SuperCab (Tan)

Item # 236F250TN

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden...

Find what Fits your car

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden...

California customers:
Please click here for your Proposition 65 warning.

Item # 236F250TN

$449.99

Other options

About 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. ThunderForm enclosures fill the nooks and crannies of your vehicle with low tones that stand out, but their factory look blends right in.

Crinkled french fries, discarded receipts, old gum wrappers — you probably have everything in the hidden corners of your vehicle except great bass. ThunderForm enclosures fill the nooks and crannies of your vehicle with low tones that stand out, but their factory look blends right in.

MTX engineers evaluate the "sonic signatures" of top-selling vehicles so they can design ThunderForms as custom acoustic matches. Each ThunderForm fits and blends inconspicuously into your vehicle, so you get great bass without losing any space. They're made of high-density polyethylene resin to curb resonances — they deliver bass that's tight, hard-hitting, and way down low. The airtight enclosure provides the correct internal volume to yield optimum bass response.

This molded MTX ThunderForm comes loaded with two premium-quality 10" Terminator speakers. It mounts under the rear seat of select 2000-2014 Ford F-250 and F-350 SuperCab pickups. Hardware is included.

READ LESS

Product highlights:

  • tan custom-fit subwoofer enclosure
  • mounts under back seat
  • high-density polyethylene resin enclosure
  • two 10" Terminator 4-ohm subwoofers
  • power range: 100-400 watts RMS (800 watts peak power)
  • frequency range: 29-160 Hz
  • sensitivity: 85 dB
  • dimensions: 55-1/8"W x 7"H x 10-3/4
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # F250X00T20-TN

What's in the box:

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

Customer reviews

Loading reviews...

MTX ThunderForms reviews

Average review:

2 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

More details on the MTX ThunderForms

Pat M.

Product Research

Features

Vehicle-Specific Custom Enclosure: This MTX ThunderForm enclosure is specifically designed to fit select 2000-2014 Ford F-250 Super Cab pickups.

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

Mounting Location: This enclosure is designed to mount under the rear seat. The jack stays in the factory location; the jack tools are relocated to the center compartment under the enclosure. 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
  • 6" Bit Extension
  • 5/16" Wrench
  • Wire Cutters
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.

Loading accessories...

Customer Q&A

7 questions already asked

Q
whats the mounting depth on the subwoofers?
[ ethan  Apr 25, 2018 ]
1 answer
A
The 10" MTX Terminator subs have a mounting depth of 4-11/16". Hope that helps! : )
[ Larry  May 04, 2018 ]  Staff
Q
Could I purchase just the enclosure itself without the subwoofers? If so how much would the price be?
[ Bobby  Aug 23, 2016 ]
1 answer
A
Thanks for your question. Only the loaded version is available. MTX matches the subs to the internal volume to yield optimum bass response.
[ Kenny  Aug 23, 2016 ]  Staff
Q
Is there any room to mount 12 inch subs in this box? or is there something Similar too this box that would fit the f250 super cab with suicide back doors?
[ Stump  Jan 04, 2020 ]
1 answer
A
That MTX Thunderform enclosure comes pre-loaded with 10" woofer.s You wouldn't be able to fit 12" without making serious modifications, and even then, there is likely not enough airspace for bigger subs. What year is your F250? We can help explore other options. You can connect with one of our friendly product advisors for live help here: https://www.crutchfield.com/I-rET1c290/S-SUliZgSTXG7/support/ContactUs.aspx
[ Cosmo  Feb 11, 2020 ]  Staff
Q
What size amp would I need to get best performance from this set up?
[ Marvin  Apr 20, 2017 ]
1 answer
A
Thanks for your question. For information on selecting the best amp/sub combo 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.
[ Kenny  Apr 22, 2017 ]  Staff
Q
Is it possible to make this enclosure fit a Crew cab?
[ Peter  Dec 22, 2018 ]
1 answer
A
Hi Peter, I won't tell you anything is impossible but that MTX Thunderform enclosure is specifically designed to fit 2000-2010 F250 SuperCab trucks. It's possible you could make it fit in a crew cab but it would certainly require custom modifications and work - kind of nullifying the advantage of buying a custom enclosure. What is the exact year make and model of your truck? We may have some other options that are a better fit. You can reach out to one of our Product Advisors to get some personal recommendations.: https://bit.ly/2QNxGQB Let me know if you have any other questions or concerns. --Cosmo
[ Cosmo  Dec 31, 2018 ]  Staff
Q
Does it come with the wires to wire to the vehicle and to a amplifier?
[ Clint H  Mar 02, 2017 ]
1 answer
A
The only wires that connect to this Thunderform is speaker wire. The amp will need power wiring and signal input wires to install it. None of this wiring is included in the packaging with this sub box. I recommend calling an advisor on 1-800-324-9695 for a personal recommendation on all this needed gear. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=101
[ Paul  Mar 12, 2017 ]  Staff
SHOW MORESHOW LESS

Loading articles...

TOP