JBL VT4881ADP-DA 18" Powered Compact Arrayable Subwoofer with Drive Pack Digital Audio Input Module, Integrated Audio System

The VT4881ADP-DA is a lightweight, vented sub-woofer enclosure housing one Ultra-Long Excursion 18" woofer and a JBL DrivePack DP1 fully integrated power and DSP electronics package . The JBL DrivePack, designed in cooperation with Harman Professional development partners, brings leading-edge technology to the VERTEC DP Series including patented high efficiency Class-I power amplifier technology and onboard BSS Omnidrive HD digital signal processing. This provides not only unmatched audio quality and performance but also onboard DSP functionality that communicates readiness and operational status to the user and monitors fault detection of components and electronics.

A new Ultra Long Excursion 18" VLF component, fitted with dual voice coils and Ultra Robust composite cone provides high output capabilities with an advantageous power-to-weight ratio. Enclosure features: foam-back perforated steel grille; speaker cone treated with weather-resistant compound; rigging tubes and hinge bars made from premium-grade alloy aluminum; plated hinge pins; stainless steel quick-release pin restraining lanyards; and inter-locking rubber feet which allow vertical stacking of multiple inter-locking units, including reverse ground-stacking for cardioid subwoofer array applications if desired. VT4881ADP-DA rigging hardware relies on quick-release pins and end-mounted metal frames to couple adjacent units together in rigid but flexible arrays.

• New 2269G Advanced Technology Component: Differential Drive Neodymium Magnet, Dual Voice Coil, Direct Cooled cone transducer with Ultra-Long Excursion capabilities
• JBL DrivePack technology delivers superb audio quality and robust high efficiency Class-I power, perfectly matched to the enclosure, with comprehensive digital signal processing
• Modular bay accepts standard dbx or optional Crown, networked input modules
• World-wide AC line voltages are automatically selected for 50 or 60Hz
• Advanced construction techniques using JBL PlyMax provide exceptionally rigid, lightweight enclosure
• Rugged DuraFlex exterior finish; Weatherized loudspeaker cone
• Integrated S.A.F.E suspension system: premium heat-treated alloys provide rigid, reliable hanging arrays designed for vertical orientation at various angles.

Application:
The VT4881ADP-DA Compact Powered 18" Arrayable Subwoofer is designed to deliver high quality sound reinforcement of VLF (Very Low Frequency) musical information for a variety of applications including concert audio, corporate A/V and theatrical presentations of all types. Ideal companion to VT4887ADP-DA compact three-way systems.

JBL DrivePack enclosures are equipped with a modular input bay that accepts either DPDA, DPIP, DPAN or DPCN input modules. Speaker-dependent processing such as crossover filtering and component equalization, time alignment and protection are not user-configurable. Options are available for connectivity, audio signal path and control functionality.

DPDA (HiQnet Network Input Module with AES Digital Audio)
The DPDA module adds AES/EBU digital audio input capability with analog audio backup, BSS Omnidrive HD digital signal processing and LevelMax multi-stage limiting. Its 100 Mb Ethernet networking (with daisy-chain capability), allows for Remote Control and Monitoring via HiQnet System Architect software. A rotary mechanical encoder allows for array identification and box positioning.

Signal generator functions (sine wave, swept tone, pink or white noise) are available to facilitate system testing and up to fifty presets can be stored internally. In addition, Master Control Panels and Master Monitor Panels allow for convenient grouping of control and monitoring functions for multiple DPDA equipped DrivePack enclosures, providing a powerful control/monitoring interface for large format line array or subwoofer systems.

The DPDA Input Module can be used as a retro-fittable sub-assembly for the noted JBL DrivePack-equipped speaker systems. Upgrading to the DPDA module provides powered loudspeaker system users with AES/EBU digital audio capabilities, the sonic benefits of advanced signal processing features and a variety of input and connectivity options.

Its onboard 100 Mb Ethernet networking switch with daisy-chain capability allows for Remote Control and Monitoring via HiQnet System Architect software. Additionally, a rotary mechanical encoder switch allows for array identification and box positioning, up to 99 different speaker positions within each of 99 different speaker arrays or groups.

Twenty type-selectable input filters (10 System and 10 Guest filters) are available for system equalization along with user adjustable input delay of up to 2 seconds and sub filter access (user-adjustable low pass filter for subwoofer systems; high pass filter for full-range systems). Signal generator functions (sine wave, swept tone, pink or white noise) are available to facilitate system testing and up to fifty presets can be stored internally.

Additionally, as part of the system's powerful remote control/monitoring interface, a self-diagnostic mode for speaker load monitoring verifies electrical transfer functions and impedance loads with the simple push of a button.

• HiQnet system compatibility for use in conjunction with other Harman Professional audio products
• AES/EBU digital audio, 96 kHz sampling rate
• BSS Omnidrive HD signal processing with F.I.R./I.I.R. filters and LevelMax multi-stage limiting circuitry
• 100 Mb native Ethernet switch with daisychain capability enables remote control and monitoring
• Fitted with both Ethercon connectors and XLR connectors; multiple signal path and connectivity options
• Ability to transport AES digital audio signals and Ethernet/HiQnet control over the same CAT5 cable and auto-sensing of array configurations based on CAT5 wiring format
• Auto detection of AES/analog audio signals with failsafe operation and redundancy modes for digital vs. analog audio signal path
• Mechanical encoder for pre-setting array identification and box positioning when PC or electricity are not available
• Speaker-specific device control interface panels for use within Harman's HiQnet System Architect software

DPDA Applications
The JBL DPDA (DrivePack Digital Audio) Input Module enables AES/EBU digital audio capability with analog audio backup, BSS Omnidrive HD digital signal processing and LevelMax multi-stage limiting. It is suitable for use on any JBL DrivePack-equipped loudspeaker model in the VERTEC DP Series and VP Series families of powered loudspeaker systems that is fitted with a DP-1, DP-2 or DP-3 JBL DriverPack assembly.

Controls and Indicators
Comprehensive onboard LED indicators and software control and monitoring functions enable complete awareness of the system's configuration and performance status. Available monitoring functions for the DPDA Input Module include: audio input type, AES lock, input signal level, clip and gain reduction; ready/temp status; individual channel load status, signal level, clip and gain reduction; event logging and user alert messaging.

Available control functions in software include: input type (analog or AES), input connector (XLR or Ethercon), input level, input polarity and mute; input compressor attack/release, ratio and makeup gain; individual channel gain and mute. An "alt-enable" preset switch toggles the highpass filter on fullrange speakers, differentiating between extended low-frequency use as a standalone system or with a high pass filter enabled for optimal use with subwoofers. On subwoofers, the "alt-enable" switch adjusts the low-pass filter.

JBL DrivePack Software Device Panel
With HiQnet-compatible DPDA input modules installed, JBL DrivePack systems can be remotely controlled and monitored using HiQnet System Architect software. A Windows-based application, this interface provides an intuitive, unified platform for system configuration and operation of not only JBL DrivePack-equipped systems in the VERTEC DP Series and VP Series, but any other HiQnet compliant audio devices in the signal chain.

HiQnet System Architect enables the unified layout of onscreen product control surfaces and simple preset configuration of an entire system made up of HiQnet-compliant products across multiple brands and product classes. Advanced remote control and diagnostic capabilities, custom control panel creation, unified event logging and error reporting for the entire system and the recall of presets on all connected HiQnet devices are included . In addition, the application enables a user to copy/paste like parameter values from and to multiple products across the HiQnet network.