Sky High Car Audio FEX Series 18" Subwoofer 1250W RMS

Sky High Car Audio FEX Series 18" Subwoofer 1250W RMS

Sky High Car Audio FEX Series 18" Subwoofer 1250W RMS
Sold by AudioSellerz.com.

The Sky High Car Audio FEX Series 18" Subwoofer is built for customers who want serious bass performance, strong daily output, and real value from a large 18" subwoofer platform. The FEX Series sits between the FE and FXB platforms, giving customers more performance than the entry-level style option without jumping all the way into the higher-cost Sky High subwoofer lines.

Rated at 1,250 watts RMS, the FEX 18" is made for daily bass builds, musical systems, SUV builds, wall builds, custom enclosures, demo systems, and car audio setups that need big low-end output with serious cone area. With a 2.75" 4-layer high-temperature voice coil, 19mm one-way Xmax, oversized suspension, and a large motor assembly, this subwoofer is designed to stay responsive, musical, and controlled while still delivering hard-hitting bass.

The 18" FEX uses dual 10" spiders for improved cone control and long-term durability. That oversized dual progressive spider suspension helps the subwoofer stay stable under power while still allowing the movement needed for deep, clean bass. The result is an 18" subwoofer that can work well in daily driver systems and louder high-output builds when matched with the right amplifier and enclosure.

One of the biggest differences in the FEX Series is the proprietary Sky High stamped steel basket. Instead of using the cast aluminum frame found on higher series models, the FEX uses a newly engineered stamped steel basket to reduce cost and mounting depth while still keeping the performance characteristics customers expect from Sky High Car Audio.

If you want a large 18" subwoofer that offers serious output, low-frequency authority, and strong performance per dollar, the Sky High FEX 18" is a strong fit. It is built for customers who want loud, clean bass, solid musical response, and a serious upgrade without moving into the higher-priced custom subwoofer platforms.

If you are building the rest of your bass setup, compare more 18 inch car audio subwoofers, browse the full car audio subwoofer collection, or shop the complete Sky High Car Audio collection at Audio Sellerz.

Key Features

• Sky High Car Audio FEX Series 18" subwoofer
• 1,250 watts RMS power handling
• 2.75" 4-layer high-temperature voice coil
• 19mm one-way Xmax
• Dual 10" spiders on the 18" model
• Oversized dual progressive spider suspension
• Large motor assembly
• Proprietary Sky High stamped steel basket
• Lower moving mass for improved efficiency and musical response
• Purpose-built performance bridge between the FE and FXB Series
• Strong option for daily bass and high-output car audio systems
• Designed for maximum value without sacrificing useful performance

Product Specifications

• Brand: Sky High Car Audio
• Model: FEX Series 18"
• SKU: SHCA-FEX-18
• Subwoofer Size: 18"
• RMS Power Handling: 1,250 watts RMS
• Voice Coil: 2.75" 4-layer high-temperature voice coil
• Xmax: 19mm one-way
• Spider Setup: Dual 10" spiders
• Suspension: Oversized dual progressive spider suspension
• Basket: Proprietary Sky High stamped steel basket
• Motor: Large motor assembly
• Series Position: Performance bridge between the FE and FXB Series
• Available FEX Sizes: 10", 12", 15", and 18"
• Impedance: Select the available impedance option before checkout

Great For

• Daily bass builds
• 18" subwoofer upgrades
• Single 18" subwoofer systems
• SUV bass systems
• Wall builds and larger custom enclosures
• Musical low-end performance
• High-output daily systems
• Customers who want more cone area than a 10", 12", or 15" subwoofer
• Customers who want strong value before stepping into higher Sky High subwoofer lines

Why Choose the Sky High FEX Series?

The FEX Series was designed for customers who want serious Sky High bass without stretching the budget too far. It takes ideas from the FE and FXB platforms and blends them into a subwoofer that offers strong output, good musical response, and useful long-term durability.

This is not just a basic budget woofer. The FEX Series uses the same style of premium material focus found throughout the Sky High subwoofer lineup, including a high-temperature voice coil, oversized suspension, large motor assembly, and a frame designed to keep cost and mounting depth under control.

18" FEX Subwoofer Performance

An 18" subwoofer is a strong choice for customers who want bigger cone area, deeper bass feel, and more low-frequency authority than smaller subwoofer setups can usually provide. The Sky High FEX 18" gives customers a serious 1,250W RMS platform with the size and suspension needed for strong daily bass.

The 19mm one-way Xmax helps the subwoofer move air for strong low-frequency output, while the dual 10" spider setup helps keep the cone controlled under power. That makes the FEX 18" useful for customers who want hard-hitting bass, clean daily performance, and better value from a serious 18" subwoofer.

Build the Bass System Correctly

The Sky High FEX 18" should be matched with the right amplifier, enclosure, wiring, electrical support, impedance configuration, and tuning. A 1,250W RMS subwoofer needs clean power and a properly built box to perform correctly.

Use clean amplifier power and avoid clipped signal. A poor tune, weak electrical system, incorrect enclosure, bad wiring, or wrong final impedance can make a good subwoofer sound bad or fail early. Proper setup is what lets the FEX 18" deliver the bass it was built for.

For best results, pair this subwoofer with a properly matched 1,000 to 1,999 watt monoblock amplifier, quality car audio wire, and the right electrical upgrades for your build.

Electrical and Wiring Support

A subwoofer in this power range should be supported by proper power wire, ground wire, fuse protection, battery condition, and charging system health. If the amplifier is not getting stable voltage, the system can lose output, create heat, clip sooner, or become unreliable.

For stronger systems, shop car audio amp kits, upgrade charging and ground wiring with a Big 3 upgrade kit, and compare car audio batteries and electrical support.

For more help planning your wiring and fuse protection, read the Audio Sellerz car audio wire gauge and fuse guide.

Enclosure and Tuning Notes

The enclosure is a major part of how any subwoofer performs. Box size, tuning frequency, port area, airspace, bracing, subwoofer loading, and vehicle layout all matter. An 18" subwoofer usually needs more enclosure space than a smaller subwoofer, so make sure the FEX 18" is a good match for the vehicle, enclosure, and bass goal before ordering.

If you are unsure how to wire the subwoofer or what final impedance your amplifier needs, use the Audio Sellerz subwoofer wiring diagrams and ohm load guide before building the system.

Important Customization Note

The Sky High FE, FEX, and FXB Series subwoofers are not customizable. If you need custom options such as forged carbon fiber cones, additional spiders, upgraded glue packages, or colorful basket finishes, look at the higher Sky High BMX, FMX, or FXXL Series options instead.

Manufacturer Warranty Note

Sky High Car Audio subwoofers include a standard 1-year manufacturer warranty against manufacturer defects. Warranty coverage does not replace proper installation, correct wiring, clean amplifier power, correct enclosure design, or proper tuning. Damage from improper installation, misuse, abuse, incorrect wiring, operating outside specifications, burned tinsel leads, or unwound voice coils is not covered.

Helpful Bass Setup Guides

Plan the build with the subwoofer wiring diagrams and ohm load guide, choose safe wiring with the wire gauge and fuse guide, and set clean power with the amp gain guide for subs, mids, and highs.

Shop Sky High Car Audio at Audio Sellerz

Browse the complete Sky High Car Audio collection at Audio Sellerz for subwoofers, amplifiers, speakers, wire, amp kits, electrical upgrades, installation accessories, and supporting equipment.

Dealers, shops, installers, builders, and resellers who want to sell Sky High Car Audio and many other car audio products Audio Sellerz offers can apply for a wholesale/dealer account through AudioResellerz.com.

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