JBL VT4880
A 132-pound dual-eighteen line-array subwoofer that carries the whole VerTec rig on its back - and in its rigging hardware.
Overview
The VT4880 is the full-sized subwoofer of JBL's VerTec line array family. It is a dual 18-inch element, built as an arrayable subwoofer to supplement the VT4889 full-frequency line array cabinet. The rest of the VerTec range - the compact VT4887, the midsize VT4888, the large-format VT4889 - handles the full-range work. The VT4880 goes underneath and does the lifting.
That is a lot of motor structure in a box that, though a foot deeper than the VT4889, shares the same front baffle size. That is the point. The VT4880 is designed to fly in the same array as the full-range cabinets, and its VerTec rigging hardware allows it to be integrated into arrays or firmly connected in ground-stacked applications. Collectors and rental houses note that the rigging hardware is the thing that makes or breaks a used example. The cabinets themselves are tough, but the flying hardware takes the abuse.
The driver is the 2258H, a dual-voice-coil neodymium Differential Drive cone. Differential Drive is the house technology across the VerTec range, and the same dual-voice-coil approach appears in the VT4887, VT4888, VT4889, VT4881 and VT4882. The neodymium magnet keeps the weight down. The dual voice coils are what allow the 4,800-watt rating.
The enclosure uses JBL's PlyMax hybrid materials construction, which appears across the VerTec line, and the VT4880 follows suit. The 132-pound weight is light for a dual-18 sub, and that is deliberate. Line array elements live and die by power-to-weight ratio, and a sub that can fly with the rest of the array without dragging the rig down is worth its price. The front baffle matches the VT4889, so the two cabinets present a consistent face in an array. The extra depth is the trade for the subwoofer volume.
The VerTec family was introduced around the early 2000s. The VT4880 was also offered in a powered variant, the VT4880ADP, alongside the VT4889ADP powered full-size line array element. Pro Audio Review (June 2008, p.52) noted the pairing.
In the field, the VT4880 turns up in touring rigs where the VerTec system is the backbone. It is not a standalone subwoofer in the home-audio sense. It is a system component, and it is judged by how it integrates with the array above it.
For collectors, the VT4880 occupies an odd position. It is professional touring gear, not consumer audio, and its value is tied to the health of the VerTec ecosystem. A pair of VT4880s without the rigging hardware and without a VT4889 array to fly them from is a pair of very heavy boxes. But for someone building or maintaining a VerTec rig, the VT4880 is the foundation, and examples with intact rigging and original 2258H drivers are the ones that command attention. The 4,800-watt rating and the 132-pound weight are the numbers that define it: a subwoofer light enough to fly and powerful enough to justify the flight.
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