Ground Zero Nuclear GZNW 30SPL-D2 12" 3000W RMS Dual 2-Ohm Competition SPL Subwoofer (6000W Max)

The Ground Zero Audio Nuclear GZNW 30SPL-D2 (MPN: GZNW 30SPL-D2 / GZNW30SPL-D2) is a heavy-weight 12-inch (30 cm / 300 mm) competition SPL car subwoofer engineered in Germany to bridge the gap between high-output daily systems and extreme Plutonium competition builds. Rated at 3,000 Watts RMS / 6,000 Watts SPL (2,000W–6,000W recommended amplifier power) with Dual 2-Ohm (2x 2-Ohm) voice coils, a massive 70 mm (2.76″) Xmax, and 86.3 dB efficiency, the Nuclear GZNW 30SPL-D2 converts massive monoblock power into relentless acoustic pressure.

Key Features & Acoustic Engineering

• 3,000W RMS / 6,000W SPL Power Handling: High-temperature 75 mm (3″) CCA round-wire voice coil and ventilated motor structure handle 2,000W to 6,000W of amplifier power.
• Extreme 70 mm (2.76″) Xmax Excursion: High-roll long-stroke surround and 4-layer Nomex spider pack deliver massive cone travel with Klippel®-verified suspension linearity.
• Reinforced Paper Cone & Carbon-Design Dust Cap: Non-pressed reinforced paper cone paired with a rigid carbon-design dust cap and solid die-cast aluminum Nuclear basket.
• Dual 2-Ohm (D2) Competition Wiring: Wire a single GZNW 30SPL-D2 in parallel to a 1-Ohm load (or 4-Ohm series), or wire a pair of 12″ Nuclear SPL subwoofers to a 0.5-Ohm or 2-Ohm final impedance.

Recommended Amplifier & Enclosure Pairing

• Amplifier Match (2,000W–6,000W RMS @ 1-Ohm): Pair a single GZNW 30SPL-D2 wired to 1 Ohm with a high-current monoblock from our Ground Zero Amplifiers or SounDigital collection.
• Enclosure Fitment Specs: Built for heavily braced vented/ported SPL enclosures and bandpass builds (11.06″ / 281 mm cutout diameter; 9.33″ / 237 mm mounting depth; 0.88 cu. ft. / 25 L Vas).
• Compare High-Power Subwoofers: Explore our Ground Zero Serious SPL & High Power Subwoofers or browse all Ground Zero Subwoofers.

Technical Specifications & Thiele-Small Parameters

Authorized US Ground Zero Audio Dealer & Custom Installation in Toledo, OH: Ships fast from TDS Car Audio (6540 Central Ave, Suite O, Toledo, OH 43617). Custom SPL enclosures and professional installation available across Toledo, Maumee, Perrysburg, Sylvania, Holland, Bowling Green, and Southeast Michigan. Call (419) 376-6140 for build support.