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  1. Home
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  3. MTX Car Audio & Electronics
  4. MTX Car Subwoofers
  5. MTX Custom-fit Subwoofer Boxes
  6. MTX MTX Thunderform Boxes

MTX MTX Thunderform Boxes for your 2014 Sierra 2500 HD close

Transform your vehicle's sound with MTX Thunderform Boxes, designed for a perfect fit.

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Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.

Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

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2014 Sierra 2500 HD
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MTX C1500C-07A

250W RMS Loaded Single 10" Amplified Sealed Enclosure for select 2007-2016 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

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MTX C1500C-07A

250W RMS Loaded Single 10" Amplified Sealed Enclosure for select 2007-2016 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

• 10" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D amplifier
• Speaker-level inputs
• External bass control

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$719.95

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MTX C1500EX-07A

250W RMS Loaded Single 10" Amplified Sealed Enclosure for select 2007-2015 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

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MTX C1500EX-07A

250W RMS Loaded Single 10" Amplified Sealed Enclosure for select 2007-2015 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

• 10" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D amplifier
• Speaker-level inputs
• External bass control

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $72.00 in rewards to spend later

Fits select models only.
Add details to confirm fitment.
$719.95

Available

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MTX Audio Thunderform C1500C-07L

Loaded 10" 4 ohm Thunderform Subwoofer Enclosure for select 2007-2016 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

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MTX Audio Thunderform C1500C-07L

Loaded 10" 4 ohm Thunderform Subwoofer Enclosure for select 2007-2016 Silverado 1500 / 2500 HD / 3500 HD / Hybrid and Sierra 1500 / 2500 HD / 3500 HD / Denali / Hybrid

• Loaded 10" Enclosure
• Fits: 2007-2016 Silverado / Sierra CREW CAB

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Add details to confirm fitment.
$599.95

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Add to Cart
 
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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