Ground Zero Radioactive GZRW 8XSPL 8" 500W RMS Dual 2-Ohm SPL Car Subwoofer (1000W Max)

The Ground Zero Audio Radioactive GZRW 8XSPL (MPN: GZRW 8XSPL / GZRW8XSPL) is a compact, high-output 8-inch (20 cm / 200 mm) daily SPL car and truck subwoofer engineered in Germany for hard-hitting bass in tight spaces. Rated at 500 Watts RMS / 1,000 Watts SPL with Dual 2-Ohm (2x 2-Ohm) voice coils, a 50 mm (2″) copper voice coil, and 22 mm (0.866″) Xmax, the Radioactive GZRW 8XSPL delivers impressive low-end punch and 84.6 dB sensitivity in custom truck, trunk, and powersports enclosures.

Key Features & Acoustic Engineering

• 500W RMS / 1,000W SPL Power Handling: Heavy-duty 50 mm (2″) pure copper voice coil handles demanding daily SPL loads without thermal compression.
• 22 mm (0.866″) Long-Stroke Excursion: High-roll long-stroke compound surround and Polycot spider provide controlled cone travel and tight mid-bass and sub-bass response.
• Reinforced Paper Cone & 3D IMPP Dust Cap: Non-pressed reinforced paper cone paired with a rigid 3D-embossed IMPP dust cap and resonance-free steel basket.
• Klippel® Laser-Optimized Motor: Tuned on Ground Zero’s Klippel® distortion analyzer for linear magnetic symmetry across the full stroke.
• Dual 2-Ohm (D2) Wiring Flexibility: Wire a single GZRW 8XSPL in parallel to a 1-Ohm final load (or 4-Ohm series), or run a pair of 8″ subwoofers at a 2-Ohm final impedance (or a quad-8″ under-seat truck box at 1 Ohm).

Recommended Amplifier & Enclosure Pairing

• Amplifier Match (400W–1,000W RMS): Pair a single GZRW 8XSPL wired to 1 Ohm (or multiple 8″ woofers) with a high-efficiency monoblock from our Ground Zero Amplifiers collection.
• Enclosure Fitment Specs: Ideal for vented/ported single, dual, or quad 8-inch truck and trunk enclosures (5.24″ / 133 mm mounting depth; 45.8 Hz Fs).
• Explore More Ground Zero Subwoofers: Browse all Ground Zero Subwoofers in our catalog.

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 multi-8″ truck enclosures and expert installation available across Toledo, Maumee, Perrysburg, Sylvania, Holland, Bowling Green, and Southeast Michigan. Call (419) 376-6140 for support.