Sky High Car Audio FMX Series 6.5" Subwoofer – 3500W RMS D1/D2

Sky High Car Audio FMX Series 6.5" Subwoofer – Small Frame, Serious Power
Sold by AudioSellerz.com

The Sky High Car Audio FMX Series 6.5" Subwoofer is a true micro-monster—built for people who want real subwoofer performance in a 6.5 inch frame. Part of the FMX lineup rated up to 3500W RMS in the larger sizes, this 6.5" version brings that same overbuilt motor technology, high thermal capacity, and rugged suspension design into a compact package. Perfect for doors, under-seat enclosures, small consoles, or creative installs where space is tight but output still matters.

The FMX Series is “Forged to Perform. Built to Endure.”—developed from real-world abuse in high-output builds, competition vehicles, and brutal daily systems. From the motor structure and coil design to the spider pack and cone reinforcement, every part of this driver is engineered to stay stable at high excursion and high temperature, not just look good on a spec sheet.

Available in dual 1 ohm (D1) and dual 2 ohm (D2) voice coil options, the FMX 6.5" makes it easy to design low-impedance systems on modern monoblocks or multi-sub setups, whether you’re running a pair in a small enclosure or loading several into a door or wall.

Key Features – Sky High Car Audio FMX 6.5" Subwoofer

• Size: 6.5" FMX Series high-performance subwoofer

• Series: FMX Series – Forged to Perform, Built to Endure (6.5"–18", D1/D2 options)

• Power Handling: Part of the FMX 3500W RMS family (larger sizes) with heavy-duty motor and suspension design scaled to the 6.5" platform for extreme real-world use

• Impedance Options: Dual 1 ohm (D1) and dual 2 ohm (D2) for flexible wiring to modern amplifiers

• Design Focus:

  • Overbuilt motor structure for high motor force and control

  • Heavy-duty suspension system for long excursion and reliability

  • Engineered for high-output, thermally stable performance in small enclosures

• Use Cases:

  • High-output 6.5" bass in doors, center consoles, small sealed/ported boxes

  • Multiple-sub arrays where space is tight but output demands are high

  • Demo-style mids/bass sections and unique custom installs

Whether you’re adding real low-end to a tight cabin build or stacking multiples in a wild custom setup, the Sky High Car Audio FMX Series 6.5" Subwoofer gives you serious performance in a compact footprint—backed by the same mindset that built the bigger FMX subs, and supported by the team at AudioSellerz.com