Sky High Car Audio Subwoofers

Sky High Car Audio Subwoofers

Sold by AudioSellerz.com

Shop Sky High Car Audio subwoofers for compact daily systems, trucks, loud trunk builds, demo vehicles, walls and competition-style installations. The Sky High subwoofer lineup includes FE Slim, FE, FXB, BMX, FMX and FXXL series with options ranging from space-saving daily bass to extreme high-output systems.

Start by comparing the FE Slim Series, FE Series, FXB Series, BMX Series, FMX Series and FXXL Series.

Choose the subwoofer around your available enclosure space, amplifier power, voice-coil configuration, final impedance, electrical support and real system goal—not simply the largest woofer or highest power rating.

Compare Sky High Subwoofer Series

FE Slim Series: Shallow-Mount Bass

Sky High FE Slim subwoofers are designed for installations where mounting depth and enclosure space are limited. They can fit behind seats, under seats, in standard-cab trucks, compact SUVs and other applications where a conventional deep subwoofer may not fit.

The Sky High FE-12SL 12-inch shallow subwoofer is rated at 300 watts RMS and is available in dual 2-ohm and dual 4-ohm configurations.

Choose FE Slim when saving space is more important than building the largest possible bass system.

FE Series: Practical Daily Bass

Sky High FE subwoofers are the practical starting point for customers who want a genuine aftermarket bass upgrade without immediately moving into high-power amplifiers and major electrical upgrades.

The Sky High FE Series 12-inch subwoofer is rated at 700 watts RMS and is offered in dual 2-ohm and dual 4-ohm versions.

Choose FE for first-time subwoofer builds, daily drivers, single-subwoofer systems and customers who want useful output with manageable amplifier requirements.

FXB Series: Louder Daily Performance

Sky High FXB subwoofers step beyond the FE line with increased power capability for louder daily systems, stronger ported enclosures and customers who want more authority from a single subwoofer or multiple-subwoofer setup.

The Sky High FXB Series 12-inch subwoofer is rated at 1,500 watts RMS and is offered in dual 2-ohm and dual 4-ohm configurations.

Choose FXB when FE does not provide enough output but the build does not need to move directly into the more demanding BMX, FMX or FXXL platforms.

BMX Series: Serious Loud-Daily Bass

Sky High BMX subwoofers are designed for serious loud-daily systems, high-output trunk builds, street demos and vehicles using larger monoblock amplifiers with upgraded wiring and electrical support.

The Sky High BMX Series 12-inch subwoofer is rated at 2,500 watts RMS and is available in dual 1-ohm and dual 2-ohm configurations.

Choose BMX when the amplifier, enclosure and electrical system are being planned together for major daily output.

FMX Series: High-Output Daily and Demo Systems

Sky High FMX subwoofers move into high-output daily, demo and light competition territory. At this level, the enclosure, amplifier, final impedance, wiring, battery capacity and alternator output all become critical parts of the build.

The Sky High FMX Series 12-inch subwoofer is rated at 3,500 watts RMS and is available in dual 1-ohm and dual 2-ohm configurations.

Choose FMX when the vehicle is being built around a serious high-output bass stage rather than receiving a basic subwoofer upgrade.

FXXL Series: Flagship Demo and Competition Builds

Sky High FXXL ferrite subwoofers are the flagship option for extreme demo vehicles, walls, large ported enclosures and competition-style systems using major amplifier power and substantial electrical support.

The Sky High FXXL Series 15-inch ferrite subwoofer is rated at 5,000 watts RMS and is offered in dual 1-ohm and dual 2-ohm configurations.

Choose FXXL only when the enclosure, amplifier stage, wiring, battery bank and charging system are designed for this level of output.

Choose the Right Sky High Subwoofer Size

Sky High Car Audio offers subwoofers in several sizes for different vehicles and bass goals:

• 6.5-inch and 8-inch subwoofers: Compact enclosures, under-seat installations, center consoles and multi-subwoofer arrays.
• 10-inch subwoofers: A balance of manageable enclosure size, punch and daily low-frequency output.
• 12-inch subwoofers: A versatile size for daily systems, loud trunk builds and multiple-subwoofer installations.
• 15-inch subwoofers: More cone area and low-frequency authority when the vehicle has room for a larger enclosure.
• 18-inch subwoofers: Large demo systems, walls, blow-through builds and competition-style vehicles.

The series matters as much as the diameter. An FE 12-inch subwoofer and an FXXL 12-inch subwoofer have completely different amplifier, enclosure and electrical requirements.

Match the Subwoofer to the Amplifier

Before ordering, calculate the final impedance created by the subwoofer’s voice coils and the number of subwoofers in the system. Use the subwoofer wiring and final-ohm-load guide before selecting a dual 1-ohm, dual 2-ohm or dual 4-ohm configuration.

The completed load must remain within the amplifier’s supported operating range. Browse Sky High Car Audio amplifiers to compare monoblock options for daily systems, loud builds and high-output installations.

Do not select an amplifier using only the highest advertised number. Compare meaningful RMS output at the completed impedance with the subwoofer’s RMS capability, enclosure, available voltage and intended use.

Use the Correct Subwoofer Enclosure

The enclosure is one of the most important parts of a bass system. Even a high-quality subwoofer can perform poorly in a box with the wrong internal volume, mounting depth, port area or tuning.

Browse available subwoofer boxes and enclosures or read the sealed versus ported enclosure guide before choosing a box.

• Sealed enclosures are generally more compact and can provide controlled, accurate bass when matched correctly.
• Ported enclosures can provide greater output around their tuning range but require more space and careful design.
• Custom enclosures may be the best option for high-power, multi-subwoofer, wall and competition-style builds.

Plan the Wiring and Electrical System

Complete the installation with a correctly sized Sky High amplifier wiring kit or choose the appropriate cable from the Sky High power, ground and speaker-wire collection.

Larger systems may also require a Sky High Big 3 upgrade kit, additional battery capacity or a high-output alternator. A Big 3 upgrade strengthens the charging and grounding paths, but it does not increase the alternator’s rated output.

Use the car audio wire-gauge and fuse guide before purchasing cable and fuse protection. Weak grounds, undersized wiring and unstable voltage can reduce output, create heat and damage expensive equipment.

Why Buy Sky High Subwoofers From Audio Sellerz?

Audio Sellerz is a real car audio retailer and installation shop in Norton, Ohio. Owner Aaron Bryant has worked in car audio since 2008 and is a MECA World Champion with hands-on experience building daily systems, custom enclosures, walls, demo vehicles, electrical upgrades and competition systems.

We understand that the subwoofer is only one part of the system. The enclosure, amplifier, final impedance, wiring, battery support, alternator capacity and tuning must work together.

If you need help choosing between FE Slim, FE, FXB, BMX, FMX or FXXL, use the live chat and tell us your vehicle, available enclosure space, amplifier, desired number of subwoofers and bass goal.

For a deeper technical comparison, read the complete Sky High subwoofer series guide.

Frequently Asked Questions

Which Sky High subwoofer series is best for a daily driver?

FE and FXB are practical starting points for many daily systems. FE offers manageable power requirements, while FXB provides increased output for customers with a stronger amplifier, enclosure and wiring foundation.

Which Sky High subwoofer is best for a truck?

FE Slim subwoofers are designed for shallow installations where mounting depth is limited. The correct model still depends on the enclosure space, amplifier power and required voice-coil configuration.

What is the difference between BMX, FMX and FXXL?

BMX is intended for serious loud-daily systems, FMX moves into high-output daily and demo territory, and FXXL is the flagship ferrite platform for extreme demo, wall and competition-style builds.

Should I choose dual 1-ohm, dual 2-ohm or dual 4-ohm coils?

Choose the coil configuration around the number of subwoofers and the amplifier’s safe operating range. Calculate the completed impedance before ordering because the coil option cannot be changed after purchase.

Can I use a Sky High subwoofer with another amplifier brand?

Yes. The subwoofer and amplifier do not have to be the same brand. The RMS power, completed impedance, enclosure and electrical system must still be matched correctly.

Do high-power Sky High subwoofers require electrical upgrades?

BMX, FMX and FXXL systems can require major wiring, battery and charging-system upgrades. The exact requirements depend on the amplifier, playing time, voltage stability and how the system will be used.

Shop Sky High Car Audio Subwoofers

Browse this collection for Sky High subwoofers ranging from shallow daily-driver models to serious loud-daily, demo and competition equipment. You can also explore the complete Sky High Car Audio collection for amplifiers, speakers, wiring, amp kits, Big 3 kits and installation accessories.

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