Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. MTX Store
  3. MTX Car Audio & Electronics
  4. MTX Car Subwoofers
  5. MTX 15" Car Subwoofers

MTX 15" Car Subwoofers

Experience earth-shaking bass with MTX 15" Car Subwoofers.

Filters
MTX ✕
Clear Filters
Reset Done
Price Range
RMS Power Handling
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.
Peak Power Handling
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.
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.
Shallow Mount Installation
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.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
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.
Impedance (Per Voice Coil)
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.
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".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
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.

Xmax (millimeters)
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.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Availability

Shop the Category

filter-icon Filters & Sort

MTX 5515-44

800W Peak (400W RMS) 15" 55 Series Dual 4-ohm Car Subwoofer

5515-44 big
Go to item page Right Arrow Icon of Right Arrow

MTX 5515-44

800W Peak (400W RMS) 15" 55 Series Dual 4-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 8.00"
• Sensitivity: 85.4 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

1
$249.95

In stock

Only 3 Left!

Add to Cart

MTX 7515-44

1500W Peak (750W RMS) 15" 75 Series Dual 4-ohm Car Subwoofer

7515-44 big
Go to item page Right Arrow Icon of Right Arrow

MTX 7515-44

1500W Peak (750W RMS) 15" 75 Series Dual 4-ohm Car Subwoofer

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 8.375"
• Sensitivity: 87.85 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $55.00 in rewards to spend later

$549.95

Available

Ships in 10-14 days

Add to Cart

MTX 5515-22

800W Peak (400W RMS) 15" 55 Series Dual 2-ohm Car Subwoofer

5515-22 big
Go to item page Right Arrow Icon of Right Arrow

MTX 5515-22

800W Peak (400W RMS) 15" 55 Series Dual 2-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 8"
• Sensitivity: 85.4 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

2
$249.95

In stock

Only 2 Left!

Add to Cart

MTX 7515-22

1500W Peak (750W RMS) 15" 75 Series Dual 2-ohm Car Subwoofer

7515-22 big
Go to item page Right Arrow Icon of Right Arrow

MTX 7515-22

1500W Peak (750W RMS) 15" 75 Series Dual 2-ohm Car Subwoofer

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 8.375"
• Sensitivity: 87.53 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $55.00 in rewards to spend later

$549.95

Available

Ships in 10-14 days

Add to Cart

(2) MTX 5515-44 15" 1600 Watt Peak DVC 4-ohm Car Audio Subwoofers Subs

800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

5515-44 2 Pack big
Go to item page Right Arrow Icon of Right Arrow

(2) MTX 5515-44 15" 1600 Watt Peak DVC 4-ohm Car Audio Subwoofers Subs

800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

• 800W Peak
• 400W RMS
• Dual 4 ohm Voice Coil
• Polypropylene Cone
• Rubber Surround
• Spider Plateau Venting Mechanically Cools the Voice Coil
• Radial Ribbed T-Yoke Dissipates Heat and Decreases Distortion

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
$499.90

In stock

Only 1 Left!

Add to Cart

• 800W Peak
• 400W RMS
• Dual 4 ohm Voice Coil
• Polypropylene Cone
• Rubber Surround
• Spider Plateau Venting Mechanically Cools the Voice Coil
• Radial Ribbed T-Yoke Dissipates Heat and Decreases Distortion

 
    Clear all

    MTX 15" Car Subwoofers Information

    MTX carries a range of 15" car subwoofers for the bass you've been looking for. MTX engineers competition grade subwoofers that will both satisfy and last. Great for subwoofer boxes and other installations, these 15" MTX subs are an easy choice.
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2006 BMW 750i

    2018 Ford Fusion

    2000 Dodge Durango

    2013 BMW X6 M

    2016 Ram Promaster 1500

    1969 Mercury Comet

    1972 Mercury Capri

    2015 Audi Allroad

    2022 Cadillac XT6

    2016 Jeep Wrangler

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2006 750i
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

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

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo