American Bass XMAXXX Monster Series 18" Subwoofer

The American Bass XMAXXX Monster 18" Subwoofer is built for extreme bass enthusiasts who demand high-power, high-impact low end in a visually bold, pro-grade package. It delivers 4000W RMS and up to 8000W peak, with a blue powder-coated basket and blue stitching surround that signaling performance and durability.

• RMS Power: 4000W RMS — indicates the continuous power the sub can reliably handle; in a properly tuned system this supports sustained loud bass without thermal limiting.
• Max Power: 8000W — peak power rating for brief transients and slap-quick bass hits when the music calls for it.
• Impedance (OHMS): D1/D2 — dual voice-coil configuration allows flexible wiring options to match a variety of amplifiers and loads.
• Sensitivity: 87.5 dB — higher sensitivity means more output per watt, aiding efficient power matching in high-performance builds.
• Mounting Depth: 11.5 in — depth requirement to fit behind panels or in trunks; plan clearance accordingly.
• Cutout Size: 16.8 in — required hole diameter for proper installation in the mounting surface.
• Ported Box (ft³): 5.5–6.5 — recommended enclosure volume for vented operation to achieve tuned bass extension.
• Magnet Size: 501 oz — a large magnet contributes strong control and dynamic response under high power.
• Voice Coil Size: 4 — substantial coil diameter supports heat dissipation and high excursion demands.
• Basket Type: CAST — rigid, heat-dissipating frame that enhances cone control and durability.
• Aesthetic: Blue powder-coated basket with matching surround and blue stitching — distinctive look that complements performance-focused builds.
• Recommended Amp (Pair): Godfather 11D — pairing guidance for two units to achieve balanced power delivery in a high‑power setup.

Benefits: In a large, ported enclosure (5.5–6.5 ft³), this 18" sub delivers deep, authoritative bass with strong transient response, driven by a high-current amplifier capable of reaching the 4000W RMS range. The dual voice-coil configuration provides wiring flexibility to suit different amplifier loads, while the 501 oz magnet and 4" coil maintain control and heat management during demanding musical passages. The cast basket enhances stiffness and reliability, and the blue aesthetic helps it stand out in customized installations. For a two-sub setup, the Godfather 11D is the recommended pairing to achieve a cohesive, high-excursion bass system.