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MTX ThunderForm

Custom-fit black subwoofer — fits 2007-up Chevrolet Silverado and GMC Sierra Extended Cab

Item # 236C150E7L

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:
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Item # 236C150E7L

$449.99

About the MTX ThunderForm

Big bass, factory look

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.

Big bass, factory look

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.

Made for your Silverado or Sierra

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. The enclosure curbs unwanted resonances from your sub, so you'll hear bass that's tight, hard-hitting, and way down low.

Fits under the rear seat

This rugged MTX ThunderForm comes loaded with a premium-quality 10" Terminator subwoofer, and mounts under the driver side rear seat of your Silverado or Sierra Extended Cab. The enclosure is seamless and airtight, with the correct internal volume to yield optimum bass response from the subwoofer. 

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Product highlights:

  • custom-fit subwoofer
  • black MDF enclosure with aviation-grade carpet cover
  • fits under the driver side rear seat
  • one 10" 4-ohm Terminator subwoofer
  • power handling: 250 watts RMS
  • frequency response: 39-150 Hz
  • sensitivity: 90.7 dB
  • 16-3/8"H x 20-3/4"W x 8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # C1500EX-07L

What's in the box:

  • ThunderForm enclosure loaded with a single 10" Terminator subwoofer

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More details on the MTX ThunderForm

Pat M.
The MTX ThunderForm replaces these items:

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Features

Vehicle Compatibility: This Thunderform custom-fit, pre-loaded enclosure is designed specifically to fit the 2007-2015 Chevrolet Silverado and GMC Sierra 1500/2500 Double Cab pickup trucks.

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

Mounting Location: Then enclosure mounts under the driver's side rear seat without taking up any usable interior space.

Enclosure: The Thunderform enclosure is made from durable MDF (Medium Density Fiberboard), that resists flexing and dampens resonance, and covered in aviation grade carpet.

Single 10" Terminator Subwoofer: The MTX enclosure comes loaded with single 10" MTX Terminator series 4 ohm subwoofer. The subwoofer is capable of handling up to 250 watts RMS and has a frequency response of 39Hz-150Hz.

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