Ground Zero Radioactive GZRW 6XSPL 6.5" 350W RMS Dual 2-Ohm Compact SPL Subwoofer (700W Max)

The Ground Zero Audio Radioactive GZRW 6XSPL (MPN: GZRW 6XSPL / GZRW6XSPL) is a compact, high-excursion 6.5-inch (16.5 cm / 165 mm) SPL subwoofer engineered in Germany for custom center consoles, under-seat truck boxes, motorcycle saddlebags, and tight-clearance cabin installations. Rated at 350 Watts RMS / 700 Watts SPL (250W–700W recommended amplifier power) 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 6XSPL produces shocking low-end punch from ultra-small enclosures.

Vehicle, Truck & Powersports Fitment Highlights

• Ultra-Compact 6.5″ Footprint & 3.90″ (99 mm) Depth: Fits where 8-inch and 10-inch subwoofers cannot—ideal for under-seat pickup truck arrays, custom center consoles, Harley-Davidson touring saddlebags, UTVs, and OEM stealth locations.
• 350W RMS / 700W SPL Power Handling: Oversized 50 mm (2″) pure copper voice coil handles 250W to 700W of amplifier power without thermal fatigue.
• 22 mm (0.866″) Long-Stroke Excursion: Reinforced paper cone, high-roll compound surround, Polycot spider, and Klippel®-optimized motor deliver deep, controlled stroke in micro ported boxes (just 0.078 cu. ft. / 2.2 L Vas).
• Dual 2-Ohm (D2) Wiring Versatility: Wire a single GZRW 6XSPL in parallel to a 1-Ohm load (or 4-Ohm series), a pair of 6.5″ subs to 2 Ohms, or a quad-6.5″ under-seat truck box to 1 Ohm.

Recommended Amplifier & Enclosure Pairing

• Amplifier Match (250W–700W RMS): Pair with a compact mono or multi-channel amplifier from our Ground Zero Amplifiers collection.
• Enclosure Fitment Specs: Optimized for micro vented/ported enclosures (5.79″ / 147 mm cutout diameter; 3.90″ / 99 mm mounting depth; 0.078 cu. ft. / 2.2 L Vas).
• 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-6.5″ truck boxes and professional installation available across Toledo, Maumee, Perrysburg, Sylvania, Holland, Bowling Green, and Southeast Michigan. Call (419) 376-6140 for support.