Massive Audio H124XR - 12" 3000 Watts RMS Dual 4 Ohm 4" V.C. Mega 70 Lbs. Subwoofer

Massive Audio H124XR is a 12-inch high-output subwoofer built for competition-grade bass and premium daily-drive systems. Weighing roughly 70 lbs, it combines a 4" dual 4-ohm voice coil with a 377 oz Sr magnet to deliver 3000W RMS of continuous power with tight, deep bass.

• Size: 12" cone diameter for deep bass and strong excursion in car enclosures.
• RMS Watts: 3000W continuous power handling, enabling sustained high-output bass when driven by a capable amplifier.
• Peak Watts: 6000W peak power rating for brief transients and dynamic boosts.
• Voice Coil: 4" Dual 4 Ohm voice coil provides flexible wiring options to match amplifiers and desired impedance.
• Cone: Kevlar fiber reinforced non-pressed paper cone yields rigidity for precise bass with natural tone.
• Surround: Tall and narrow foam surround supports long linear excursion while maintaining controlled behavior.
• Magnet: 377 oz strontium magnet supplies strong magnetic field for consistent control at high power.
• Heat & Ventilation: Vented back plate and basket help manage heat during long high-output sessions.
• Terminals: Heavy-duty direct input wires connection for secure, low-resistance wiring.
• Basket: Cast aluminum basket provides rigidity with light weight to minimize unwanted vibrations.
• Tinsel Leads: Heavy-duty triple leads ensure reliability at high excursion.
• X-Max: 21.6 mm maximum linear excursion for deep bass and dynamic control.
• SPL: 93.54 dB sensitivity indicating relatively efficient, high-output performance.
• Enclosure Options: Ported Box and Sealed Box configurations; See User Guide PDF for details.
• Fs: 43 Hz resonant frequency, indicating strong low-end extension with the right enclosure.
• Additional Design Notes: Anodized aluminum former on the voice coil; Kevlar spunlace; dual Nomex spiders; high-roll surround; cast aluminum basket with red stitching and fiberglass woven dust cap; pre-installed heavy-gauge direct leads.

In a properly tuned enclosure and paired with a capable high-current amplifier, the H124XR delivers deep, controlled bass with substantial headroom. It suits competition builds and premium daily-driver systems where power handling, durability, and precise bass articulation are essential.