Ground Zero Radioactive GZRW 12XSPL 12" 1000W RMS Dual 2-Ohm SPL Car Subwoofer (1500W Max)

The Ground Zero Audio Radioactive GZRW 12XSPL (MPN: GZRW 12XSPL / GZRW12XSPL) is a high-excursion 12-inch (30 cm / 300 mm) daily SPL and competition car subwoofer engineered in Germany for deep, punchy bass output. Rated at 1,000 Watts RMS / 1,500 Watts SPL (800W–1,500W recommended amplifier power) with Dual 2-Ohm (2x 2-Ohm) voice coils, a massive 45 mm (1.77″) Xmax, and a 75 mm (3″) copper voice coil, the Radioactive GZRW 12XSPL delivers true 3-inch-coil thermal durability and long-stroke excursion in a versatile 12-inch footprint.

Key Features & Acoustic Engineering

• 1,000W RMS / 1,500W SPL Power Handling: Oversized 75 mm (3″) pure copper voice coil handles 800W to 1,500W of daily amplifier power with superior heat dissipation.
• 45 mm (1.77″) Long-Stroke Excursion: High-roll compound surround and 2-layer Polycot spider support deep, authoritative low-frequency stroke down to its 31.8 Hz Fs.
• Reinforced Paper Cone & 3D IMPP Dust Cap: Non-pressed reinforced paper cone paired with a rigid IMPP dust cap featuring Ground Zero’s embossed 3D logo and a resonance-free steel basket.
• Klippel® Laser-Optimized Motor: Engineered with Ground Zero’s Klippel® testing system for balanced magnetic symmetry and clean output at high SPL levels.
• Dual 2-Ohm (D2) Wiring Flexibility: Wire a single GZRW 12XSPL in parallel to a 1-Ohm final load (or 4-Ohm series), or wire two GZRW 12XSPL subwoofers to a 0.5-Ohm or 2-Ohm final impedance.

Recommended Amplifier & Enclosure Pairing

• Amplifier Match (800W–1,500W RMS @ 1-Ohm): Pair a single GZRW 12XSPL wired to 1 Ohm with a 1,000W–1,500W monoblock amplifier from our Ground Zero Amplifiers collection.
• Enclosure Fitment Specs: Excels in vented/ported SPL enclosures and daily ground-pounder trunk or SUV builds (6.54″ / 166 mm mounting depth; 0.96 cu. ft. / 27.2 L Vas).
• Explore More Ground Zero Subwoofers: Compare across our full Ground Zero Subwoofers lineup.

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 subwoofer boxes and professional installation available for drivers across Toledo, Maumee, Perrysburg, Sylvania, Holland, Bowling Green, and Southeast Michigan. Call (419) 376-6140 for expert support.