JBL VT4888
Two twelves, four 5.5-inch mids, and a pair of compression drivers per box — the middle child of JBL's VerTec line that ended up in more arrays than anyone expected.
Overview
The VT4888 is the midsize element in JBL's VerTec line array family, and the one that quietly became the workhorse of the range. Where the compact VT4887 is built around dual 8-inch woofers and the fullsize VT4889 steps up to dual 15s, the VT4888 sits in the middle with a pair of 12-inch woofers, four 5.5-inch midrange radiators, and two high-frequency compression drivers per enclosure — a three-way box, according to Mix (January 2005, p.179), which catalogued the entire VerTec Series in a single roundup alongside the VT4887 and VT4889. All three of those full-range models share JBL's wedge frustum, 5° side-angle cabinet design, and all VerTec systems use the company's Differential Drive dual voice-coil transducers.
Owners and integrators who spec'd the VT4888 tend to talk about it as the box that scales. Henderson Pavilion, the semi-enclosed concert venue southeast of Las Vegas, took a full audio redesign built around 18 VT4888 VerTec boxes paired with 12 VT4882 subs — a configuration that put the midsize VerTec at the center of a working FOH system rather than as a fill or downfill afterthought, as documented in Mix (June 2007, p.35). The same issue's news pages note the VT4888 turning up at events as varied as a women's rights rally at Kingsmead Cricket Stadium in Durban, South Africa, where Kingston Sound supplied JBL VerTec VT4888 line array enclosures for the stage production. That range — from a permanent pavilion install to a one-off stadium event — is the VT4888's natural habitat.
Construction is where the VerTec line shows its touring intent. Most VerTec models, including the VT4888, are built with JBL's PlyMax hybrid materials construction for high rigidity at low weight, and the whole range was pre-engineered to accept JBL's optional DrivePack self-powered technology. That last point matters more than it might seem: the VT4888 could be run as a conventional externally-amplified box or converted to self-powered operation with a Crown-manufactured DrivePack module, which meant a rental house could buy passive boxes and add amplification later as budgets allowed. By 2005, JBL was listing self-powered VerTec variants directly — the VT4888DP-AN and VT4888DP-CN appear in Mix (October 2005, p.179) at a listed price of $8,699, alongside the VT4882DP-AN and VT4882DP-CN subwoofer versions. Note that those are distinct model designations from the base VT4888, and collectors and buyers should keep them separated; a "VT4888DP" is not the same product as a "VT4888."
Rigging on the VerTec line uses pinned hinge bars — the same type of hardware across the family, per Mix (January 2005, p.179), which described the VT4888 as a midsize VerTec element with two 12-inch woofers and four 5.5-inch midrange radiators. That midrange topology is worth pausing on: four small midrange radiators covering the vocal band is a deliberate choice for pattern control in the 5°-per-box array, and it's part of why the VT4888 behaves the way it does when you hang a dozen of them. The 2407 ring radiator is the high-frequency engine, and it's the same family of driver JBL used across the line.
What the VT4888 is not, at least on the evidence available, is a hi-fi speaker or a collector's cabinet. It's a working line array element — flown, rigged, amplified in racks, and tuned with prediction software. OSA International's install at Henderson Pavilion had VP/systems engineer Jim Risgin commissioning and tuning the system using JBL's array calculation software, which is the normal workflow for these boxes and a reminder that a VT4888 without a proper array design and DSP is just a heavy box with good drivers. The Vault 350 in Long Beach, a nightclub built into a 1920s bank building, ran a full JBL VerTec VT4888 line array off more than 110,000W of Crown Macro-Tech power, according to Mix (February 2005, p.xx) — a reminder that these are high-power, high-headroom touring tools, not living-room speakers.
For anyone chasing a VT4888 today, the practical picture is a used professional line array element that has almost certainly been flown, trucked, and rained on at some point. The PlyMax construction and the pinned hinge rigging are the parts to inspect closely; the drivers themselves are serviceable and the 2407 ring radiators are a known JBL part. Self-powered DP variants carry their own amplifier and DSP concerns and should be evaluated on their electronics as much as their acoustics. The base VT4888 remains the more flexible buy for anyone with existing amp racks, and the passive-to-DrivePack conversion path means a passive box isn't a dead end. What the VT4888 lacks in collector romance it makes up for in the fact that it was built to do a job, and did it in arrays from Las Vegas pavilions to Durban cricket grounds.
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