Massive Audio GTX124H 12" Subwoofer

The Massive Audio GTX124H 12" Subwoofer is part of the GTX124H Series subwoofers, a high-output dual-4Ω driver built for premium car audio builds, delivering 600-800W RMS (1600W peak) from a rugged 12-inch chassis.

• Size: 12" diameter driver for bass extension and flexible enclosure options.
• Power Handling: 600–800W RMS with 1600W peak capability; designed to sustain high-power bursts in a well-tuned system.
• Voice Coil: 2.5" Dual 4Ω voice coil; supports robust current handling and flexible wiring options.
• Cone: UV Treated / Non-Pressed Paper; provides stiffness with weathering tolerance for automotive use.
• Surround: EROM foam; maintains excursion and durability under high-power bass activity.
• Magnet: 120 oz magnet; larger magnetic construction improves control and low-end authority.
• Basket: Heavy gauge steel; rigid frame minimizes distortion during transients.
• Tinsel Leads: Woven round tinsel leads; designed for reliable operation under high excursion.
• X-Max: 15 mm with a 10 mm top plate; enables deep bass and strong dynamic response.
• Terminals: 5-way binding push terminals; flexible wiring and impedance options.
• SPL: 88 dB; efficiency metric indicating input needed for a given output in a typical enclosure.
• Fs: 36 Hz; indicates low-frequency extension potential when paired with an appropriate enclosure.
• Enclosure options: Ported box 14"H x 16"D x 16"W with 14.05 sq in port area; Sealed box volume 1.62 ft³; provides choices for deeper bass or tighter response depending on install.

Benefits: In a real car audio build, the GTX124H provides robust, high-output bass from a 12" driver with a rugged chassis designed to handle demanding programs. The 120 oz magnet and heavy steel basket keep cone motion controlled through deep transients, while the dual 4Ω voice coil and 5-way terminals allow flexible wiring for dual-woofer or single-woofer configurations. The cone and surround construction—UV-treated non-pressed paper with EROM foam—resists wear in automotive environments, extending life under heat and sun. Enclosure options include a 14"H x 16"D x 16"W ported design with 14.05 sq in port area for deeper bass, or a 1.62 ft³ sealed box for tighter, more controlled response. This makes it a strong foundation for a GTX124H Series system in a wide range of vehicles.