Ground Zero Iridium GZIW 200 8" 150W RMS 4-Ohm Cast Basket Car Subwoofer (200W Max)

The Ground Zero Audio Iridium GZIW 200 (MPN: GZIW 200 / GZIW200) is a high-efficiency 8-inch (20 cm / 200 mm) daily car and truck subwoofer engineered in Germany with a solid die-cast aluminum basket and 3D-structured HQPP cone. Rated at 150 Watts RMS (100W–200W recommended amplifier power) with a Single 4-Ohm voice coil, high 87 dB sensitivity, and a compact 3.94″ (100 mm) mounting depth, the Iridium GZIW 200 delivers clean, musical bass down to 32 Hz in compact sealed or vented enclosures without requiring a massive amplifier or electrical upgrade.

Key Features & Acoustic Engineering

• Solid Cast Aluminum Basket & 3D HQPP Cone: Unlike typical stamped-steel entry-level 8-inch woofers, the GZIW 200 features a resonance-free die-cast aluminum basket and rigid 3D-structured HQPP polypropylene cone.
• High 87 dB Sensitivity & 150W RMS Rating: Driven by a 38 mm (1.5″) copper voice coil that produces full, punchy sub-bass from just 100W to 200W RMS of amplifier power.
• Compact 3.94″ (100 mm) Mounting Depth: Fits easily into under-seat truck enclosures, OEM subwoofer replacement locations, and compact trunk boxes.
• Single 4-Ohm Impedance: Wire a single GZIW 200 directly to a bridged 2-channel/4-channel amplifier at 4 Ohms, or wire a pair of GZIW 200 subwoofers in parallel to a 2-Ohm monoblock load.

Recommended Amplifier & Enclosure Pairing

• Amplifier Match (100W–200W RMS @ 4-Ohm): Pair with a compact micro mono amplifier (such as the Ground Zero GZRA 450.1-MICRO) or a bridged multi-channel amplifier from our Ground Zero Amplifiers collection.
• Enclosure Fitment Specs: Performs in small sealed and vented 8-inch enclosures (7.17″ / 182 mm cutout diameter; 3.94″ / 100 mm mounting depth; 0.83 cu. ft. / 23.6 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 enclosures and factory-integration installations available across Toledo, Maumee, Perrysburg, Sylvania, Holland, Bowling Green, and Southeast Michigan. Call (419) 376-6140 for assistance.