Description The VTX B28 GND is an outrigger accessory used to improve stability in ground stack configurations built on the VTX B28 subwoofer. The B28 GND connects directly to the B28’s integral rigging hardware and enlarges the base footprint of the stack. The B28 GND can be used with B28-only ground stacks of more than four enclosures, or when full-range VTX speakers are stacked on top of B28 subwoofers using one of the supported base plate accessories. The B28 GND enables semi-permanent attachment of B28s to stages, carts, and other support structures, using its M10 through-holes. The two-part design is compact, lightweight, and fits into most standard road cases. Ground stack parameters and mechanical safety of arrays are calculated using JBL’s LAC-3 software.FEATURESImproves stability of ground stacks built on the B28 subwooferAttaches directly to B28 integral riggingSimple two-part designLightweightSPECIFICATIONSSpecificationDetailsProduct NameJBL VTX B28 GND Ground Stack AccessoryCompatibilityDesigned for VTX B28 subwoofers; attaches directly to B28’s integral rigging hardwareConstructionHigh-grade steel with anti-corrosion coatingFinishBlack powder coatDimensions (H x W x D)41 mm × 60 mm × 550 mm (1.6 in × 2.4 in × 21.7 in)Add product gallery imagesNet Weight3.7 kg (8.3 lbs)Included Components(2) VTX B28 outriggers (left/right)Maximum Load CapacitySupports up to four VTX B28 subwoofersSafe Load CapacitySafe stacking limit of three VTX B28 subwoofersRigging CompatibilityCompatible with JBL’s LAC-3 software for accurate ground stack parameter calculationsStorage & TransportCompact design fits into most standard road cases for easy storage and transportationKey FeaturesEnhances stability of ground stacks, simple two-part design for easy setup and storage, lightweight construction
