Car Subwoofers for your 2004 Focus

Find the best car subwoofers and sub boxes to enhance your car audio system. We're the #1 subwoofer experts since 2000. Boost your bass with our selection of component subwoofers, subwoofer boxes, subwoofers with amplifier packages, and subwoofer installation accessories. Explore our selection and find the best options for a component subwoofer or two, and find loaded, sealed, ported, and bandpass enclosures, as well as complete subwoofer bass packages.

Your Vehicle

2004 Focus

Product results for your vehicle – confirm details to verify fitment.

Update vehicle | Remove vehicle | Vehicle store

Trending Deals in Car Subwoofers

All Deals

Kicker 20% Off

Shop by Category

Products in these categories contain items that carry a guarantee to fit your Ford Focus (change vehicle)

Thumbnail icon for All Component Car Subwoofers

All Car Subwoofers

12-inch Subwoofers

10-inch Subwoofers

Underseat Subwoofers

Spare Tire Subwoofers

Thumbnail icon for Car Bass Packages & Powered Subs

Bass Packages & Powered Subwoofers

8-inch Subwoofers

15-inch Subwoofers

18-inch Subwoofers

Thumbnail icon for 6.5" & Small Car Subwoofers

6.5" & Small Size Subwoofers

Thumbnail icon for Other Sizes of Car Subwoofers

Other Sizes of Subs

Subwoofer Installation

All Car Subwoofer Boxes (Loaded & Empty)

Thumbnail icon for Empty Car Subwoofer Enclosures & Boxes

Empty Subwoofer Boxes

Subwoofers with a Box

Marine Subwoofers

Additional Categories

You can shop these categories, but we cannot guarantee fit and/or we do not have products that fit your vehicle.

Custom-fit Subwoofer Boxes

Thumbnail icon for Factory Replacement Subwoofers

Factory Replacement Subs

Top sellers

Clear all

FAQ Frequently asked questions in Car Subwoofers

What is a car subwoofer, and why do I need one?

A car subwoofer is a specialized speaker designed to reproduce low-frequency bass sounds. It enhances the audio system by delivering deep and powerful bass that standard car speakers cannot produce. Subwoofers are essential for experiencing the full range of frequencies in music and enhancing the overall audio quality. They add depth and impact to the sound, creating a more immersive and enjoyable listening experience. Whether you enjoy rock, hip-hop, or electronic music, a car subwoofer ensures that you can feel the music as well as hear it, adding a whole new dimension to your car audio system.

How do I choose the right car subwoofer for my vehicle?

Choosing the right car subwoofer involves considering factors such as the size of your vehicle, available space, power handling capabilities, and personal audio preferences. The most common subwoofer sizes for cars are 8-inch, 10-inch, 12-inch, and 15-inch. Smaller subwoofers are suitable for compact cars with limited space, while larger ones provide more bass output for larger vehicles or enthusiasts seeking a more robust bass experience. Additionally, consider the subwoofer's power handling (RMS and peak power) and impedance to match it with your car amplifier. If you're unsure about which subwoofer to choose, consult with a car audio professional who can recommend the best option based on your vehicle and audio preferences.

Can I install a car subwoofer myself, or do I need professional installation?

While some car audio enthusiasts may have the knowledge and experience to install a car subwoofer themselves, professional installation is generally recommended. Installing a subwoofer involves more than just connecting wires; it requires proper placement, enclosure design, and tuning to achieve optimal sound quality and performance. A professional installer has the expertise and tools to ensure that the subwoofer is installed correctly, reducing the risk of damage to the vehicle and audio equipment. Additionally, they can help integrate the subwoofer seamlessly into your car's interior and fine-tune the audio system for the best possible sound. Investing in professional installation guarantees that your car subwoofer performs at its best and provides a satisfying bass experience.

What's the difference between a powered and passive car subwoofer?

A powered car subwoofer, also known as an active subwoofer, has a built-in amplifier, whereas a passive subwoofer requires an external amplifier to power it. The advantage of a powered subwoofer is its simplicity; it can be easily connected to the car's audio system without the need for a separate amplifier. This makes powered subwoofers a popular choice for those looking to add bass to their car audio system without extensive modifications. On the other hand, passive subwoofers offer more flexibility for audiophiles who want to customize their audio setup. They allow for the use of external amplifiers, giving users greater control over their audio system's performance. The choice between powered and passive subwoofers depends on your preferences and the level of customization you desire for your car audio setup.

Can I use multiple subwoofers in my car audio system?

Yes, using multiple subwoofers in your car audio system is possible and can lead to improved bass performance. Multiple subwoofers can help distribute bass more evenly throughout the vehicle, reducing peaks and nulls in bass response. This can result in smoother and more consistent bass across different seating positions. Additionally, using multiple subwoofers can increase overall bass output, allowing for a more impactful and immersive listening experience. When using multiple subwoofers, it's essential to properly match them with the car's amplifier and consider enclosure designs that complement each subwoofer's characteristics. Integrating multiple subwoofers may require more complex installation and tuning, so consulting with a car audio professional is advisable to achieve the best results.

All About

Car Subwoofers

If you're on the hunt for the best quality car subwoofers to elevate your audio experience, look no further. Explore our extensive collection now and discover the perfect subwoofer that will bring new life to your car's sound system.

Car subwoofers are the heartbeat of any audio system, adding depth and power to your music that standard speakers alone cannot replicate. These specialized speakers are designed to handle low-frequency sounds, commonly referred to as bass. By reproducing these low notes accurately, car subwoofers enrich the audio experience, providing a full-bodied, immersive sound that you can feel.

One of the key advantages of having car subwoofers is their ability to enhance the overall sound quality. By taking on the responsibility of reproducing bass frequencies, subwoofers relieve the main speakers of this task, allowing them to focus on delivering crisp and clear mid and high-range sounds. The result is a well-balanced and dynamic audio experience that can transform your daily commute into a concert-like journey.

Beyond music, car subwoofers also enhance the enjoyment of movies, audiobooks, and podcasts. Whether you're a music enthusiast, a movie buff, or simply someone who appreciates high-quality audio, adding a subwoofer to your car's audio system will undoubtedly elevate your entertainment experience on the road.

At Sonic Electronix, we take pride in offering a diverse range of top-tier car subwoofers from leading brands in the industry. Our team of audio experts is dedicated to assisting you in finding the best car subwoofer that aligns with your audio preferences and vehicle specifications. Whether you're seeking bone-rattling bass or a smooth, refined sound, we have the perfect options to meet your audio aspirations.

For personalized guidance and expert assistance, don't hesitate to reach out to our knowledgeable staff at 1-502-200-8010. Our audio specialists are ready to help you create a custom car audio setup that perfectly complements your driving style and audio preferences.

Sonic Electronix Learning Center: Differences in Subwoofer Sizes

Popular Brands in Car Subwoofers

Shop all brands

Hide all brands

Related Categories in Car Subwoofers

Car Amplifiers

Car Speakers

Car Audio Installation & Accessories

Car Video, GPS & Safety

Marine Audio & Electronics

UTV & ATV Audio

Motorcycle & Harley-Davidson Audio

Car Stereos

Car Subwoofer Grilles

Car Subwoofer Recone Kits

Equalizers & Sound Processors

Midbass Drivers & Midrange Speakers

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

Free perks, no Prime^TM fees

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.

Free install gear for stereos

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.

Authentic & Authorized

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.

View best sellers, deals, and 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!

Learn about All Car Audio

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!

Call or email our experts

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?

Subscribe

Welcome to the Team!

Car Subwoofers for your 2004 Focus

Your Vehicle

Product results for your vehicle – confirm details to verify fitment.

Trending Deals in Car Subwoofers

Shop by Category

Additional Categories

Top sellers

Kicker C84 (43C84)

Kicker C84 (43C84)

Kicker L7T82 (46L7T82)

Kicker L7T82 (46L7T82)

Kicker TCWRT82 (48TCWRT82)

Kicker TCWRT82 (48TCWRT82)

DS18 IXS12.2D

DS18 IXS12.2D

JL Audio MicroSub+ ACP112LG-TW1

JL Audio MicroSub+ ACP112LG-TW1

MTX SLH12X2S

MTX SLH12X2S

JBL CLUB1200P (JBLSUBCB1200P)

JBL CLUB1200P (JBLSUBCB1200P)

JVC CW-DR1040ML

JVC CW-DR1040ML

Hertz MPS 300 S4

Hertz MPS 300 S4

Diamond Audio DES82

Diamond Audio DES82

DS18 SQBASSx2

DS18 SQBASSx2

JBL CLUB1000D (JBLSUBCB1000D)

JBL CLUB1000D (JBLSUBCB1000D)

Diamond Audio DPST12

Diamond Audio DPST12

DS18 PSW10.2D

DS18 PSW10.2D

Kicker CVR12 (52CVR122)

Kicker CVR12 (52CVR122)

JBL Stage 102 (JBLSUBST102AM)

JBL Stage 102 (JBLSUBST102AM)

Alpine RS-W10D4

Alpine RS-W10D4

Hertz MPBX 250 S2

Hertz MPBX 250 S2

Cerwin Vega H7124D

Cerwin Vega H7124D

Sony XS-W124GS

Sony XS-W124GS

FAQ Frequently asked questions in Car Subwoofers

All About

Popular Brands in Car Subwoofers

Related Categories in Car Subwoofers

Are you sure you want to clear your garage?

This category was not designed for products.

Didn't find your car?

Account

Shopping help

Company

Everyday heroes

Brand stores

Useful links