JBL VTX-B1-GND Universal Ground Stack Accessory, Compatible with B15 and B18
The VTX B1 GND is a universal outrigger accessory used to improve stability in ground stack configurations built on supported VTX subwoofers. The GND connects directly to the subwoofer’s integral rigging hardware and enlarges the base footprint of the stack. The accessory can be used with subwoofer-only ground stacks of more than four enclosures or when full-range VTX speakers are stacked on top using one of the supported base plate accessories. The four-part design is compact, lightweight, and easily fits into standard road cases. Ground stack parameters and mechanical safety of arrays are calculated using JBL’s LAC-3 software.