Sky High Car Audio

Sky High Car Audio FMX Series 6.5" Subwoofer – 600W RMS D1/D2

$324.95 USD

Sale Sold out

Shipping calculated at checkout.

Impedance D1 D2

Sky High Car Audio FMX Series 6.5" Subwoofer – 600W RMS D1/D2

Sold by AudioSellerz.com

The Sky High Car Audio FMX Series 6.5-inch Subwoofer delivers serious low-frequency performance from a compact platform. Rated for 600 watts RMS, this small-footprint subwoofer is built for tight installations, creative enclosures and multi-subwoofer systems where space and output both matter.

The FMX 6.5 combines a triple-stacked Y35 ferrite motor, 2-inch high-temperature voice coil, 5.5-inch progressive spider and Sky High 10-gauge direct leads. A forged carbon-fiber cone and recessed forged carbon-fiber dust cap provide a strong, stealthy appearance, while fiberglass support beneath the cone adds rigidity.

Choose between dual 1-ohm and dual 2-ohm voice-coil configurations based on the number of subwoofers, amplifier capabilities and final impedance planned for the completed system.

Sky High FMX 6.5-Inch Subwoofer Features

6.5-inch FMX Series subwoofer
600 watts RMS power handling
Dual 1-ohm or dual 2-ohm voice-coil options
2-inch high-temperature voice coil
5.5-inch progressive spider
Triple-stacked Y35 ferrite motor
Sky High 10-gauge direct leads
Forged carbon-fiber cone
Recessed forged carbon-fiber dust cap
Fiberglass support beneath the cone for added rigidity
Stealth black appearance
No customization options
SKU: SHCA-FMX-6

Compact FMX Performance

The FMX 6.5-inch subwoofer brings the construction and design of the FMX lineup into a compact format. It is made for systems that need more output than a basic small subwoofer but cannot accommodate the enclosure required by a larger 10-inch, 12-inch, 15-inch or 18-inch driver.

The Sky High FMX 6.5 can be a strong option for:

Behind-seat truck enclosures
Under-seat installations with sufficient clearance
Center-console bass systems
Compact trunk and hatchback builds
Custom space-saving enclosures
Single high-output 6.5-inch systems
Multiple-subwoofer arrays
Systems where output and enclosure space must be carefully balanced

Its compact diameter does not eliminate the need for a properly designed enclosure. The box must still be built around the requirements of the FMX 6.5 rather than chosen only because it has a 6.5-inch cutout.

Forged Carbon-Fiber Cone Construction

The FMX 6.5 uses a forged carbon-fiber cone and recessed forged carbon-fiber dust cap. Fiberglass support beneath the cone adds rigidity for controlled movement during demanding use.

The triple-stacked Y35 ferrite motor provides the motor structure behind the subwoofer, while the 5.5-inch progressive spider helps stabilize the moving assembly. Sky High 10-gauge direct leads provide a secure connection without relying on small conventional push terminals.

Dual 1-Ohm vs Dual 2-Ohm

The D1 and D2 versions have the same 600-watt RMS rating. The difference is the final impedance each voice-coil configuration can provide.

One dual 1-ohm subwoofer can normally be wired to a 0.5-ohm or 2-ohm final load.
One dual 2-ohm subwoofer can normally be wired to a 1-ohm or 4-ohm final load.

Multiple FMX 6.5-inch subwoofers create additional wiring options. Choose D1 or D2 based on the total number of subwoofers and the safe operating impedance of the amplifier.

Review the subwoofer wiring diagrams and final ohm-load guide before selecting the voice-coil configuration.

Match the Amplifier to 600 Watts RMS

Match the amplifier using the correct 600-watt RMS rating for each FMX 6.5-inch subwoofer. Do not use the 3,500-watt rating associated with the larger FMX Series models when planning power for this compact version.

Before choosing an amplifier, confirm:

The number of FMX 6.5-inch subwoofers being installed
Whether each subwoofer is D1 or D2
How the voice coils and subwoofers will be wired
The completed final impedance
The amplifier’s RMS output at that impedance
The amplifier’s minimum stable impedance
The required power wire and fuse protection
The available battery and alternator support

Browse monoblock car audio amplifiers when choosing power for a single or multiple FMX 6.5-inch subwoofer system.

Use an Enclosure Designed for the FMX 6.5

The enclosure affects low-frequency extension, output, efficiency, cone control and reliability. A compact subwoofer can still perform poorly or become damaged when installed in an incorrectly designed box.

Before building the enclosure, verify:

Recommended net internal volume
Suitable enclosure design
Port area and tuning when applicable
Subwoofer and port displacement
Mounting depth
Cutout diameter
Cone and surround clearance
Direct-lead and speaker-wire clearance
Available space and loading direction inside the vehicle

Read the complete subwoofer box and enclosure guide when planning the box portion of the system.

Power Wiring and Electrical Support

The amplifier must receive stable power through properly sized wiring, secure grounds and correct fuse protection. Electrical requirements increase when multiple FMX 6.5-inch subwoofers and larger amplifiers are installed.

Browse Sky High Car Audio amplifier wiring kits and Sky High Car Audio Big 3 kits when planning the wiring and charging paths.

A Big 3 upgrade strengthens important charging and grounding connections, but it does not increase the alternator’s rated output.

Set Gain and Filters Correctly

Amplifier gain should be used to match the amplifier’s input sensitivity to the source signal. Gain is not an additional volume or power control.

Excessive gain can create clipping, heat and voice-coil damage. Low-pass crossover and subsonic-filter settings should also be selected around the amplifier, enclosure design, tuning frequency and intended operating range.

Read how to set amplifier gain for subwoofers before completing the final tuning.

Shop the Sky High FMX Subwoofer Series

Compare the FMX 6.5-inch with additional FMX sizes in the Sky High Car Audio FMX Subwoofer Series collection.

You can also browse the complete Sky High Car Audio subwoofer lineup to compare the FE Slim, FE, FXB, BMX, FMX and FXXL Series.

Helpful Audio Sellerz Links

Finishing a wiring install? Shop car audio power wire and ground wire, car audio fuse holders and fuse blocks, Big 3 upgrade kits, and Sky High Car Audio amp kits.

For more installation help, read the car audio wire gauge and fuse guide and the car audio grounding guide.

Dealer & Wholesale Accounts

Dealers, shops, installers, builders, and resellers who want to sell Sky High Car Audio products or other products offered by Audio Sellerz can apply for a wholesale or dealer account through AudioResellerz.com.