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MTX ThunderForm Unloaded Enclosure

Holds a single 10" sub — fits 2007-up Chevrolet Silverado/GMC Sierra Crew Cab (Black)

Item # 23615B10U

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...

Item # 23615B10U

Ships from distributor

In Stock
C$449.99
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About the MTX ThunderForm Unloaded Enclosure

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 black enclosure comes without a speaker — you install your favorite 10" subwoofer. For best results, MTX strongly recommends using a speaker designed for an enclosure with a volume of 1.0 cubic foot. The enclosure mounts under the rear seat of select 2007-up Chevrolet Silverado or GMC Sierra Crew Cab pickups.

Please check with us before purchasing by using the vehicle selector on our site, or calling an Advisor at 1-888-955-6000 to verify fit information.

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Product highlights:

  • custom-fit black subwoofer enclosure for 10" sub
  • mounts under rear seat
  • fiberglass construction
  • volume: 1 cubic foot (sealed)
  • dimensions: 22"L x 8"H x 18-1/2"D
  • mounting depth: 5-1/4"
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # C15C07FB10U
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What's in the box:

  • Custom-fit unloaded 10" subwoofer enclosure
  • Installation instructions

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MTX ThunderForm Unloaded Enclosure reviews

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MTX ThunderForm Unloaded Enclosure

Ricky from Providence, NC on 11/21/2017

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I'm very picky about my vehicles wanted something that fit and looked right. This box was a little pricey but you get what you pay for. I'm very satisfied with the look, fit and performance of this box 100%.

Pros: Fit,look,and performance is great.

Cons: A little pricey but for what I got very happy

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MTX ThunderForm Unloaded Enclosure

Crutchfield customer from Glasgow, KY on 5/8/2017

2013 Chevrolet Silverado 1500

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Well built box that sounds good with a Kicker speaker. Does require you to bolt it to the floor for proper installation.

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Cons:

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More details on the MTX ThunderForm Unloaded Enclosure

Pat M.

Product Research

Features

Vehicle-Specific Custom Enclosure: The enclosure mounts behind rear seat, firing forward, in a 2007-2010 Chevy/GMC 1500 Crew Cab truck.

Note: Please refer to the Crutchfield Vehicle Selector to confirm fit for your vehicle.

Construction: The sealed enclosure features fiberglass construction with a black finish.

Tools For Installation:

  • Powered screwdriver
  • #2 Phillips head bit
  • 6" Bit holder extension
  • 10mm socket
  • Socket Wrench

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Customer Q&A

1 question already asked

Q
If I purchased two, could both fit under the seats one on each side of my 2008 GMC Sierra Crew Cab?
[ Ernest  Jul 21, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Greg  Jul 21, 2015 ]  Staff

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