Massive Audio GTX124H Package | 12" 1600W D4 Subwoofer & QPower HD Ported Box

Massive Audio GTX124H Package | 12" 1600W D4 Subwoofer & QPower HD Ported Box

The Massive Audio GTX124H is a powerhouse 12" subwoofer built for serious sound enthusiasts. Delivering 800 Watts RMS and 1600 Watts MAX, this dual 4-ohm beast features a heavy-gauge steel basket with industrial texture painting for unmatched durability. At its core are dual stacked high-flux Y30 120oz Strontium Ferrite magnets and a 10mm top plate, driving intense magnetic force for clean, thunderous bass.

Its UV-treated non-pressed paper cone is stitched with tight red threading and bonded to a pressed foam surround, ensuring long-lasting performance and minimal distortion. The GTX124H’s poly-cotton spider and high-grade woven tinsel leads connect to spring-loaded 5-way nickel-plated terminals, offering reliable signal transfer and flexible installation.

With a compact 6.69" mounting depth and a precision-engineered 10.79" cutout diameter, the GTX124H fits a wide range of enclosures while delivering Massive Audio’s signature sound quality. Whether you're upgrading your car audio system or building a custom setup, this subwoofer is designed to perform and built to last.

Also Known As: GTX-124H / GTX-124-H / GTXH-124 / GTX1244H / GTX12D4H

Subwoofer Details:

• MAX Power Handling: 1600W

• RMS Power Handling: 600-800W

• Impedance: DVC 4 Ohm

• Sensitivity: 88 dB

• Mounting Diameter: 10.79"

• Mounting Depth: 6.69"

• Weight: 16.53 lbs.

• Heavy Gauge Steel Basket with Industrial Texture Painting

• Dual Stacked High Flux Y30 120oz. Strontium Ferrite Magnets

• 2.5" 4 Layer Hi-Temp Copper Voice Coil

• Poly Cotton Spider with Woven Round Tinsel Leads

• UV Treated / Non-Pressed Paper Cone with EROM Foam Surround

• Round Shape PP Vacuum Dust Cap

• 10mm Top Plate

• Customized Rubber Gasket & Magnet Boot

Box Details:

• 3/4" MDF Construction w/Extra Thick Front Baffle

• Machine Precision Cut Mounting Hole

• Top of The Line Glue For Extra Durable Adhesion

• High Quality Spring Loaded Terminals

• Type of Enclosure: Vented

• Enclosure Sub Size: 12"

• Dimensions: 18" L x 13.25" H x 16" D

• Top & Bottom Depth: 16"

• Tuning Frequency: 37Hz

• Internal Volume: 1.5 Cubic Feet

• Box Weight: 28 lbs.

Owner's Manual / Spec Sheet

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