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Updated: 08 Oct 2025

10 Best 18 Inch Car Subwoofers

#1
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Single Din Carplay Car Stereo Android Auto Manual&HD Screen-10.1 Inch IPS Touchscreen Car Radio with Bluetooth Mirror Link Backup Camera/USB/AUX/EQ/Subwoofer/DSP/FM//Voice Control Siri

Brand: VECHTEL
$281.16
⭐ 4.7
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    10.1 Inch Large Adjustable Touchscreen: This single din carplay radio features a 10.1-inch touchscreen with a stunning 1024*600P resolution. Adjust the screen to your preferred angle via Manual Screen Rotation. Designed to optimize usability and enhance the driving experience
  • Wired Carplay,Android Auto,Voice Control: Still using your smartphones to navigate? After quickly connecting to your phone by carplay and android auto function via USB cable, the real-time information of the map is enlarged and displayed in this single din touchscreen radio, make it possible for you to access phone contacts, email, music and more
  • Bluetooth Car Stereo: This car stereo single din is equipped with dual-pass Bluetooth 4.2, supports hands-free calling and wireless audio streaming, built in Mic and external microphone with noise reduction technology. You can answer or make calls hands-free and play music clearer and more stable by carplay single din stereo
  • HD Backup Camera,Support Dash Cam: The single din stereo comes with a HD reversing camera, IP69 waterproof rating, clear night vision and automatic screen switching when reversing. In addition, you can also connect a car driving recorder (not included) to further improve driving safety
  • FM Radio,EQ DSP Audio: Save 18 FM station presets to tune into live news, real-time traffic and music. EQ audio setting that enables you to customize your sound preferences for the ultimate driving experience
  • Wired Phone Mirror Link for iOS/Android: Single din radio carplay uses mirror link feature to connect your smartphone via USB cable with this single din car stereo, then you can play Youtube, Tiktok and other videos on this single din radio
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#2
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Car Stereo for Toyota Corolla 2007-2013 with Wireless Apple Carplay and Android Auto,9 Inch Android 11 Touch Screen Car Radio Support Bluetooth Hands-Free/Mirror Link/FM/WiFi/GPS Navigation, 1GB+32GB

Brand: REAKOSOUND
$176.65
⭐ 4.1
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    Built-in Wireless CarPlay & Android Auto Car radio compatible with wireless Apple CarPlay and Android Auto voice control function for Toyota Corolla 2007-2013. Users can realize CarPlay voice control to access car system making phone call, GPS navigation, playing video and music, sending and receiving messages etc. Compatible with Google assistant to voice control Android Auto function as well.
  • Bluetooth & FM Radio Enables you to play music from your phone via wireless bluetooth connection. Support hands-free calling, Bluetooth music playing and sync smartphones phonebook. You can accurately listen to TV broadcasts, news, music, weather forecasts, travel information and enjoy your driving time at any time.
  • Mirror Link You can connect your phone(Android and IOS) via USB cable to mirror link with the car radio to enjoy a full-on screen access experience for photos/Videos or online navigation.
  • Build in WIFI & GPS Navigation Built-in GPS module and WiFi receiver, GPS antenna included, double din in dash GPS head unit for Toyota Corolla 2007-2013, supports online and offline navigation map, compatible with Google map. Built-in Wifi module, you can connect to the Internet by connecting to a mobile phone hotspot or a router, and then you can download APPs, watch online movies, listen to online music, browse the web, etc.
  • Multi-Functions 9 Inch 2.5D Curved Glass IPS Screen, 1080P resolution will provide you the excellent experience in the car. Also support steering wheel control, you can control the options of the radio, changing the music and the volume, provides more safety while driving. Support Reversing Camera(Not Include), when reversing, the rear view camera automatically switches to display the perfect image to help you park safely..
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#3
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BELLIFFY 4/5/6 Inches Car Speaker Grille Covers Subwoofer Modification Net Audio Speaker Grille Easy Install

Brand: BELLIFFY
$18.69
⭐ 4.8
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    Speaker mesh: this net cover is for car speakers and DIY speaker decoration.
  • Loudspeaker net covers: the protective cover is easy to use and install, bringing of convenience to you.
  • Mesh speaker grill covers: dedicated car audio modification, professional audio accessories can provide you better user experience.
  • Speaker guard: car audio speaker covers it has a simple design, but very practical in use, giving you a .
  • Woofer speaker mesh: manufactured with professional technology to ensure the high- class of the product and can work for a long time.
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#4
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Herdio 3" inch 12V Marine Boat Bluetooth Stereo Receiver Motorcycle Speakers Digital Media MP3 Motorcycle Audio Entertainment System Round Flush Mount with Max Power 140 watt (A Pair)

Brand: Herdio
$109.58
⭐ 4.1
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    COMPLETELY WATERPROOF- Marine grade construction build Marine grade construction build IP44 waterproof certified rating for consistent sound quality regardless of weather conditions so you can enjoy high-fidelity quality sound on your boat just as you do at home
  • RELIABLE QUALITY - Pair of 3'' ABS Material with Superior Standard . Includes all necessary installation cables & wires to enjoy a more consistent & enhanced sound field with full range stereo surround sound reproduction.
  • Compatible With Bluetooth-The whether resistant loud speaker system is equipped with wireless music streaming. so you can listen to streaming music services through your system,It can reach 20 meters, wherever you are in the Motorcycle ,hot tub ,boat,spa room. you also can enjoy a high definition stereo sound
  • EASY INSTALLATION-The Flush mount speakers is compact in design and size, pretty much easy for installation for any places. the outside facial Diameter of our waterproof speakers is 3.94 with Mounting Hole Diameter: 2.83, and Mounting Depth:2.95
  • IDEA FOR -Boat ,Motorcycles,hot tub, Golf Cart,ATV, UTV,RZR ,RV,Speedboat, pontoon,off -road And Other 12 Volt Applications
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#5
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6.5" Speaker Grill Covers, Car Speaker Subwoofer Guard Protector, ABS Plastic Frame with Metal Mesh, Black - 2Pcs

Brand: Fuhengli
$49.12
⭐ 4.8
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    Material: High-quality ABS plastic frame + metal mesh, the round frame is more advanced, durable and easy to clean
  • Frame Dimensions: Outer Diameter: 183mm / 7.2'', Inner Diameter: 146mm / 5.7'', Grill Thickness: 23mm / 0.9''
  • Screw Hole Diameter: 4.5mm, Mount Hole Distance: 155mm / 6.1"
  • Suitable for 6.5" DIY speakers and cars speaker decorative circle, Protect your Subwoofer from cuts, rips and dents
  • NOTE: our product is two-piece design, after the screws are installed, the joint between the screen cover and the frame needs a small amount of glue for reinforcement, to prevent the screen cover from fell off in .Package Includes: 2 of 6.5" Speaker Grill + 8x Tapping Screws
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#6
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Adire Audio Single 10 Inch Subwoofer Box Ported – 1.25 Cu Ft, 33Hz Tuned, Baltic Birch, Pre-Wired 10ga OFC - 24mm Baffle, USA Made Ply Subwoofer Enclosure to Enhance Sound & Bass, Handles up to 1500W

Brand: Adire Audio
$651.54
⭐ 4.8
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    Unleash Powerful Bass Elevate your sound system with this 1.25 cubic foot single 10 subwoofer box, expertly tuned to 33Hz. Immerse yourself in deep, resonant bass and crystal-clear, distortion-free audio that energizes your car speakers. Experience every beat with intensity for an unparalleled audio journey!
  • Built with Premium Baltic Birch for Durability Built from (18mm) and a 1 (24mm baffle) this car subwoofer enclosure handles subwoofBuilt with Premium Baltic Birch for Durability Built from (18mm) Baltic Birch plywood with a 1 (24mm) baffle, our lightweight yet strong 10 inch sub box is glued with Titebond III for durability. A refined assembly ensures no visible screw holes, handling up to 1500W er setups up to 3000W. These lightweight yet strong car subwoofer boxes & enclosures are glued with Titebond III for durability and use a refined assembly process ensures no visible screw holes.
  • Refined and Seamless Aesthetic - Finished with a sleek gray-stained veneer and polyurethane topcoat, this 10in subwoofer box exudes sophistication. The 10 sub box's screwless assembly and precise craftsmanship make it a standout addition to any audio setup
  • Prewired and Ready to Go - Equipped with Satin Nickel Brass binding posts and prewired with high-quality OFC 10GA wire; this 10 inch speaker box is ensuring an easy, convenient setup. No need for additional wiring, allowing you to quickly connect and enjoy optimal performance right out of the box
  • Crafted by the Leaders of Bass - Handcrafted in the USA, Adire Audio combines premium materials and expert craftsmanship to create durable, high-performing car subwoofer boxes & enclosures that deliver exceptional quality and unbeatable value
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#7
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Magnadyne LS69W | 6" x 9" High Power Subwoofer | 35 Watts |

Brand: Magnadyne
$63.86
⭐ 4.1
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    Equipped with a polypropylene coated cone woofer
  • This subwoofer has a RMS power of 35 Watts and in Input voltage of 12V.
  • 90 watts maximum power handling, 65Hz-3kHz frequency response, 4 ohm impedance
  • Please refer to the dimensions in the listing photo for your reference. All measurements are referred to in inches.
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#8
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Kicker CompRT 8" 600W Car Subwoofer

Brand: KICKER
$259.00
⭐ 4.7
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    High Mass, Solid Pole Piece for Superior Heat Dissipation
  • Dual Voice Coils for Installation Flexibility
  • Unique Heat Management for a Thin but Powerful Sub
  • New and Improved True Subwoofer Performance from a Thin Driver
  • Features Forced-Air Cooling - 20% Cooler for Increased Reliability
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#9
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Bbox Pro Audio Tuned 6.5" Speaker Enclosures - Premium Speakers to Enhance Sound and Bass - Nickel Finish Terminals for Car or Truck - 18 Gauge Audio Cables - Speaker Set of 2 (Charcoal)

Brand: Atrend
$169.51
⭐ 4.7
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    THE ULTIMATE PARTY BOX SPEAKER ENCLOSURE: Say hello to the greatest Pro Audio Tuned 6.5" speaker box you'll ever use. Say goodbye to unwelcome rattling disrupting your music's sound quality and ruining the vibe- thanks to the air-tight, resonant free recessed side panels sealed with our special aliphatic resin wood glue, our car audio speakers enclosure vastly improves the overall sound quality and bass of your system.
  • PREMIUM QUALITY BUILD YOU CAN COUNT ON: Each Bbox truck speaker box is built with high-grade MDF that is 5/8 inches thick for solid frequency response and accurate music reproduction. The metal nickel finish on our speaker box kit helps to ensure a solid grip on the speaker wires for seamless music signal transfer. You'll love the way the bass sounds in our 6.5 speaker enclosure. So, what are you waiting for? Let's get the party started with music you can truly jam to!
  • CNC MITER & DADO CONSTRUCTION: By using premium materials, specially formulated aliphatic wood glue, and recessed side panels, the construction of our speaker boxes is solid and airtight. This assembly eliminates vibrations and rattles.
  • NOT JUST FOR VEHICLES: Use our speaker terminal enclosure in your home, place of business, or anywhere! Forget about tawdry alternatives offered by other brands that produce sound quality that kills the hype and causes nothing but a headache- our speaker kit gets the job done right for years and years of enjoyment.
  • A COMMITMENT TO EXCELLENCE: Quality and your satisfaction are our top priorities and we deliver. We proudly stand by our products and are fully confident that you'll see why. Your search is over- ours is the no-brainer option for speaker enclosures. Feel, hear, and experience the difference today!
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#10
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Kicker CWRT84 8" 600W Car Subwoofer

Brand: KICKER
$225.85
⭐ 4.1
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    High Mass, Solid Pole Piece for Superior Heat Dissipation
  • Dual Voice Coils for Installation Flexibility
  • Unique Heat Management for a Thin but Powerful Sub
  • New and Improved True Subwoofer Performance from a Thin Driver
  • Features Forced-Air Cooling - 20% Cooler for Increased Reliability
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🛒 Buying Guide: How to Choose the Best 18 inch car subwoofers

If you are in the market for an 18 inch car subwoofer, you've come to the right place. This guide is designed to help you navigate through the myriad options available, ensuring you make an informed decision based on your specific audio preferences and vehicle requirements. We will explore key features, installation tips, and highlight some top models to consider.

Car subwoofers are crucial in providing the deep, resonant bass that completes the audio spectrum in your vehicle's sound system. An 18 inch subwoofer, one of the larger sizes available, is ideal for those who prioritize powerful bass and are willing to accommodate the larger physical footprint of these units.

  • Power Handling: This determines how much power the subwoofer can handle. Look for RMS (continuous power handling) rather than peak power, as it gives a more realistic measure of performance.
  • Sensitivity: Sensitivity measures how effectively a subwoofer converts power into sound. The higher the sensitivity, the less power needed to produce the same amount of sound.
  • Frequency Range: This indicates the range of sounds the subwoofer can reproduce. A lower frequency means the subwoofer can produce deeper bass.
  • Enclosure Type: The type of enclosure (sealed, ported, or bandpass) affects the sound output. Sealed boxes deliver tighter, more accurate sound, while ported and bandpass enclosures produce more volume.
  • Impedance: Most car subwoofers are either 2-ohm or 4-ohm. It's crucial to match the subwoofer’s impedance with your amplifier for optimal performance.

While we don't have an 18 inch specific model listed, it's crucial to consider similar powerful options that can provide comparable bass quality and depth. Here are a few recommended products:

  • Kicker CWRT84 8" 600W Car Subwoofer - Though not an 18-inch, it compensates with high mass, solid pole piece for superior heat dissipation, dual voice coils, and unique heat management for a thin but powerful output.
  • Kicker CompRT 8" 600W Car Subwoofer - Similar to the CWRT84, this model offers robust performance in a compact size, ideal for setups where space is at a premium.
  • For those looking to build a custom setup, consider the Adire Audio Single 10 Inch Subwoofer Box. It's a high-quality enclosure that's pre-wired and tuned to enhance the sound and bass of your system substantially.

Installing an 18 inch subwoofer can be a challenging task. Here are some tips to ensure a smooth installation:

  • Vehicle Space: Ensure your vehicle has adequate space for an 18 inch subwoofer, as these are quite large.
  • Proper Wiring: Use high-quality wires and ensure all connections are secure to avoid any potential issues.
  • Amplifier Matching: Match the subwoofer’s power needs with your amplifier's output capability to ensure efficient performance without damage.
  • Professional Installation: Considering the complexity, it might be wise to have your system professionally installed to ensure optimal performance and safety.

Choosing the right 18 inch car subwoofer involves understanding your vehicle's specific needs and the distinctive features of the subwoofers. By considering the models suggested and following the outlined tips, you're well on your way to enjoying deep, resonant bass that transforms your driving experience. Remember, good music isn't just heard; it's felt!

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