Ground Zero GZIB 30BR 350 Watts RMS 30 cm / 12″ vented subwoofer loaded enclosure

Product information

The Ground Zero GZIB 30BR is a passive 12-inch (30 cm) front-vented car subwoofer enclosure engineered by the German car audio brand Ground Zero. It belongs to their entry-level Iridium Series, designed to deliver top-tier bass performance and punchy sound quality without a massive price tag. Key Technical Specifications Power Handling: 350 Watts RMS Driver Included: Ground Zero GZIW 30 12" subwoofer Impedance: 4 Ohms single voice coil Enclosure Volume: 37 Liters (1.31 cu. ft.) net volume Dimensions (W x H x D): 460 x 320 x 327/255 mm (18.11 x 12.60 x 12.87/10.04 inches) Notable Features EFP Front Bass Channel: Features an aerodynamically optimized front bass reflex tunnel that reduces air turbulence and maximizes deep bass output. Space-Saving Wedge Design: Constructed with an angled rear wall, allowing the wooden enclosure to sit flush against the back of your car's rear seats to save trunk space. Robust Enclosure: Built using a heavy-duty wooden/MDF frame wrapped in durable carpet featuring an embroidered Ground Zero logo. Easy Hookup: Includes standard push terminals at the rear for a secure, tool-free connection to your speaker wire. Note: Because this is a passive enclosure, it does not contain a built-in amplifier. To power it safely, you will need to pair it with an external amplifier capable of pushing between 200 to 400 Watts RMS at a 4-Ohm load. (If you prefer a plug-and-play setup with an integrated amplifier, look for the active version named the Ground Zero GZIB 30BR-ACT).

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