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The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
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Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
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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.
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Refers to the diameter of the subwoofer, measured in inches.
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This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

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Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
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The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
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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.

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This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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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".
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This is the color of the speaker's or subwoofer's cone.
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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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Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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MTX Audio Thunderform DRQC20C-TN (Charcoal, Loaded)

Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure for select 2002-2018 vehicles from Ram, Dodge

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Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure for select 2002-2018 vehicles from Ram, Dodge

• Dual 10" Loaded MTX Thunderform Subwoofer Enclosure
• For Dodge Ram Quad Cab 2002-2014
• Loaded with Dual Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms
• Polypropylene Cone

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MTX Audio Thunderform DRQC20AC-TN (Charcoal, Amplified)

select 2002-2018 vehicles from Ram, Dodge Amplified 2 10" 4 ohm Vehicle Specific Thunderform Subwoofer Enclosure

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select 2002-2018 vehicles from Ram, Dodge Amplified 2 10" 4 ohm Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded Amplified MTX Thunderform Subwoofer Enclosure
• For Dodge Ram Quad Cab 2002-2014
• Loaded with Dual Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 Ohms

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MTX F-150EX-09A

250W RMS 10" 4-Ohm Super Cab Amplified Subwoofer Enclosure Fits Ford F-150

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250W RMS 10" 4-Ohm Super Cab Amplified Subwoofer Enclosure Fits Ford F-150

• 250W Single 10" Sealed Subwoofer Enclosure with Built-In Amplifier
• 10" Terminator Subwoofer
• Built-In 250W Terminator Amplifier
• Sealed enclosure with aviation grade carpet finish
• Enclosure Dimensions: 36-1/3" L x 7-1/4" H x 14-1/8" D

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Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart
18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness.

$9.95

$9.95

Add to cart
Install Bay BS9HD

Heavy Duty Metal Mounting Backstrap

$9.99

$1.49

Add to cart

MTX Audio Thunderform F150C04BK12A-TN (Black, Amplified)

Amplified 12" 4 ohm Loaded Car Specific Thunderform Sub Enclosure select 2004-2008 Ford F-150

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Amplified 12" 4 ohm Loaded Car Specific Thunderform Sub Enclosure select 2004-2008 Ford F-150

• Amplified 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Crew/Ext Cab
• Loaded with 12" Terminator Series Subwoofers
• 400W Max
• 200W RMS
• 4 Ohms

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MTX Audio Thunderform F150C04C12A-TN (Charcoal, Amplified)

Amplified 12" 4 ohm Loaded Car Specific Thunderform Sub Enclosure for select 2004-2008 Ford F-150

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Amplified 12" 4 ohm Loaded Car Specific Thunderform Sub Enclosure for select 2004-2008 Ford F-150

• Amplified 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Crew/Ext Cab
• Loaded With 12" Terminator Series Subwoofer
• 400W Max
• 200W RMS
• 4 Ohms

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MTX TTDDC07FB10-FPR

10" 200W Loaded Thunderform Subwoofer Enclosure for select 2007-2013 Toyota Tundra- Black

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10" 200W Loaded Thunderform Subwoofer Enclosure for select 2007-2013 Toyota Tundra- Black

• 200W Single 10" Sealed Subwoofer Enclosure
• RMS: 200 W Total
• Preloaded with single 10" FPR-Series Subwoofers
• 10" Sealed Vehicle Specific Enclosure
• Hand Laid Fiberglass Construction - Black

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MTX C1500C-07A

250W RMS 10" Amplified Vehicle Specific Custom Subwoofer Enclosure for select 2007-2016 vehicles from GMC, Chevrolet

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250W RMS 10" Amplified Vehicle Specific Custom Subwoofer Enclosure for select 2007-2016 vehicles from GMC, Chevrolet

• 10" Amplified Loaded Subwoofer System
• Compatible with select 2007-2016 vehicles from GMC, Chevrolet Vehicles
• 250 Watt RMS
• Built-In Class D Amplifier

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• 10" Amplified Loaded Subwoofer System
• Compatible with select 2007-2016 vehicles from GMC, Chevrolet Vehicles
• 250 Watt RMS
• Built-In Class D Amplifier

C1500C-07A small

Item added to your cart.

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart
18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness.

$9.95

$9.95

Add to cart
Install Bay BS9HD

Heavy Duty Metal Mounting Backstrap

$9.99

$1.49

Add to cart

MTX C1500EX-07A

250W RMS 10" Amplified Extended Cab Subwoofer Enclosure for select 2007-2015 vehicles from GMC, Chevrolet

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250W RMS 10" Amplified Extended Cab Subwoofer Enclosure for select 2007-2015 vehicles from GMC, Chevrolet

• 10" Amplified Loaded Subwoofer System
• Compatible with select 2007-2015 vehicles from GMC, Chevrolet Vehicles
• 250 Watt RMS
• Built-In Class D Amplifier

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• 10" Amplified Loaded Subwoofer System
• Compatible with select 2007-2015 vehicles from GMC, Chevrolet Vehicles
• 250 Watt RMS
• Built-In Class D Amplifier

C1500EX-07A small

Item added to your cart.

Price: $579.95

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart
18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness.

$9.95

$9.95

Add to cart
Install Bay BS9HD

Heavy Duty Metal Mounting Backstrap

$9.99

$1.49

Add to cart

MTX Audio Thunderform FMUST05BK12-TN (Black, Loaded)

select 2005-2014 Ford Mustang 12" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

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select 2005-2014 Ford Mustang 12" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Single 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2005-2008 Ford Mustang
• Loaded With a Terminator Series Subwoofer
• 400W Max
• 200W RMS
• 4 ohms

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MTX Audio Thunderform JWTJ97C20-TN (Charcoal, Loaded)

select 1997-2006 Jeep Wrangler, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

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select 1997-2006 Jeep Wrangler, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• 1997-2006 Jeep Wrangler TJ
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform F250X00BK20A-TN (Black, Amplified)

select 2000-2014 Ford F-250 Super Duty, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

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select 2000-2014 Ford F-250 Super Duty, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Super Cab
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 Ohms

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform JWTJ97C20A-TN (Charcoal, Amplified)

select 1997-2006 Jeep Wrangler, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Sub Enclosure

JWTJ97C20A-TN big
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select 1997-2006 Jeep Wrangler, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Sub Enclosure

• Amplified 2 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• 1997-2006 Jeep Wrangler TJ
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform F250X00C20-TN (Charcoal, Loaded)

select 2008-2014 Ford F-250 Super Duty Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

F250X00C20-TN big
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select 2008-2014 Ford F-250 Super Duty Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Super Cab
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms
• Polypropylene Cone

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform F250X00C20A-TN (Charcoal, Amplified)

select 2008-2014 Ford F-250 Super Duty, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

F250X00C20A-TN big
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select 2008-2014 Ford F-250 Super Duty, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Super Cab
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

MTX Audio Thunderform F250X00BK20-TN (Black, Loaded)

select 2008-2014 Ford F-250 Super Duty Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

F250X00BK20-TN big
Go to item page Right Arrow Icon of Right Arrow

select 2008-2014 Ford F-250 Super Duty Two 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Super Cab
• Loaded With Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohms
• Polypropylene Cone

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

MTX Audio Thunderform F150C04C12-TN (Charcoal, Loaded)

12" 4 ohm Loaded Vehicle Specific Thunderform Subwoofer Enclosure for select 2004-2008 Ford F-150

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12" 4 ohm Loaded Vehicle Specific Thunderform Subwoofer Enclosure for select 2004-2008 Ford F-150

• Loaded 12" Subwoofer Enclosure Custom-Fit for 2004-2007 Ford F-150 Pickup
• 400W Max
• 200W RMS
• Polypropylene Woofer Cone • Rubber Surround
• 28oz. Magnet Structure

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• Loaded 12" Subwoofer Enclosure Custom-Fit for 2004-2007 Ford F-150 Pickup
• 400W Max
• 200W RMS
• Polypropylene Woofer Cone • Rubber Surround
• 28oz. Magnet Structure

F150C04C12-TN small

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Price: $479.95

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform C1500C-07L

Loaded 10" 4 ohm Thunderform Subwoofer Enclosure for select 2007-2016 vehicles from GMC, Chevrolet

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Loaded 10" 4 ohm Thunderform Subwoofer Enclosure for select 2007-2016 vehicles from GMC, Chevrolet

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

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform F150C04BK12-TN (Black, Loaded)

12" Loaded Sub Enclosure Custom-Fit for select 2004-2008 Ford F-150 (STX, XL, XLT, Base, FX4, Lariat)

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12" Loaded Sub Enclosure Custom-Fit for select 2004-2008 Ford F-150 (STX, XL, XLT, Base, FX4, Lariat)

• Loaded 12" Subwoofer Enclosure Custom-Fit for 2004-2007 Ford F-150 Pickup
• 400W Max
• 200W RMS
• Polypropylene Woofer Cone
• Rubber Surround
• 28oz. Magnet Structure

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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MTX Audio Thunderform F150C09FB10-TN (Black, Loaded)

select 2009-2015 Ford F-150, Loaded 10" 4 ohm Subwoofer Enclosure

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select 2009-2015 Ford F-150, Loaded 10" 4 ohm Subwoofer Enclosure

• Loaded 10" Subwoofer Enclosure
• Fits in Ford F-150 SuperCrew Cab 2009-2010
• 400W Max
• 200W RMS
• Fiberglass Construction
• 1.5" Voice Coil
• 28oz. Magnet
• Enclosure Volume: 1.0 Cubic Ft

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MTX TTDDC07FB10U

10" 200W Thunderform Subwoofer Enclosure for select 2007-2013 Toyota Tundra- Black

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10" 200W Thunderform Subwoofer Enclosure for select 2007-2013 Toyota Tundra- Black

• Single 10" Sealed Subwoofer Enclosure
• Hand Laid Fiberglass Construction
• Installs Under Rear Seat • Hand Laid Fiberglass Construction - Black

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    FAQ Frequently asked questions in MTX Thunderform Boxes


    MTX Thunderform Boxes Frequently Asked Questions (FAQ)
    MTX Thunderform Boxes are custom-fit enclosures for motorcycle speakers. They are designed to be aerodynamic and stealthy, so they do not disrupt the airflow around your motorcycle. They also come with a built-in amplifier, which makes them a great option for riders who want a powerful and easy-to-install audio system.
    There are many benefits to using MTX Thunderform Boxes, including: Aerodynamic design: MTX Thunderform Boxes are designed to be aerodynamic, so they do not disrupt the airflow around your motorcycle. This can improve fuel economy and make your motorcycle more stable at high speeds. Stealthy design: MTX Thunderform Boxes are designed to be stealthy, so they do not look like they are there. This can make your motorcycle look more streamlined and can help to prevent theft. Integrated amplifier: MTX Thunderform Boxes come with a built-in amplifier, which makes them a great option for riders who want a powerful and easy-to-install audio system. High-quality speakers: MTX Thunderform Boxes come with high-quality speakers that produce excellent sound quality. Durable construction: MTX Thunderform Boxes are made from durable materials that can withstand the elements. Easy installation: MTX Thunderform Boxes are designed to be easy to install. Most models can be installed in minutes using the included hardware.
    There are a few factors to consider when choosing an MTX Thunderform Box, including: The type of motorcycle you have: MTX Thunderform Boxes are made for specific models of motorcycles. Make sure to choose an enclosure that is made for your motorcycle. The type of music you listen to: If you listen to a lot of bass-heavy music, you will need an enclosure with a subwoofer. Your budget: MTX Thunderform Boxes range in price from a few hundred dollars to a few thousand dollars. It is important to set a budget before you start shopping. The warranty: Make sure the enclosure you choose comes with a good warranty. This will protect you in case something goes wrong.
    Installing an MTX Thunderform Box is a relatively simple process, but it is important to follow the manufacturer's instructions carefully. Here are the basic steps involved in installing an MTX Thunderform Box: 1. Choose a location for the enclosure. The enclosure should be located in a place where it is not likely to be damaged by wind or rain. 2. Secure the enclosure in place. The enclosure should be secured in place to prevent it from moving around. 3. Connect the speakers to the enclosure. The speakers should be connected to the enclosure using speaker wire. 4. Connect the enclosure to the motorcycle's electrical system. The enclosure should be connected to the motorcycle's electrical system using a wiring kit. 5. Test the system. Once the system is installed, test it to make sure it is working properly.
    MTX Thunderform Boxes are available at a variety of retailers, including motorcycle audio stores, electronics stores, and online retailers. When choosing a retailer, it is important to make sure that they offer a wide selection of products and that they have a good reputation for customer service.

    All About MTX Thunderform Boxes


    MTX takes the cake as the vehicle specific sub box inventors. They provide an awesome and easy bang for your buck and plenty of options to choose from.

    Looking for the best MTX Thunderform Box for your car audio system? Look no further than Sonic Electronix! We offer a wide selection of high-quality MTX Thunderform Boxes that are sure to fit your needs and budget.

    MTX Thunderform Boxes are the perfect way to add bass and power to your car audio system. These enclosures are designed to house a subwoofer and an amplifier, and they can provide a significant boost in sound quality. MTX Thunderform Boxes are made with the highest quality materials and components, and they're backed by MTX's legendary warranty.

    An MTX Thunderform Box is a subwoofer enclosure that is designed to be installed in a car. Thunderform Boxes are typically made from fiberglass or MDF, and they are designed to fit in specific locations in the car, such as the trunk or the rear deck. Thunderform Boxes typically house a subwoofer and an amplifier, and they can provide a significant boost in sound quality for your car audio system.

    Advantages of MTX Thunderform Boxes

    There are many advantages to using MTX Thunderform Boxes. Here are just a few:

    Sound quality: MTX Thunderform Boxes are designed to provide excellent sound quality. The custom-fit design ensures that the subwoofer is positioned in the ideal location for optimal sound reproduction.

    Power: MTX Thunderform Boxes are designed to provide plenty of power for your subwoofer. This means that you can crank up the volume and enjoy your music without sacrificing sound quality.

    Durability: MTX Thunderform Boxes are made with the highest quality materials and components, so they can withstand the rigors of everyday use.

    Warranty: MTX Thunderform Boxes are backed by MTX's legendary warranty. This means that you can be confident that your enclosure will perform for years to come.

    Sonic Electronix is here to help you find the best MTX Thunderform Box for your car audio system. We offer a wide selection of products from the top brands in the industry, and our staff is knowledgeable and experienced. We can help you choose the right enclosure for your budget and your needs, and we can also install it for you.

    If you're looking for the best MTX Thunderform Box, don't hesitate to contact Sonic Electronix. We're here to help you make your car audio system sound its best.

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