More than just an upgrade version, the new program 's significant new features were developed in response to input from system users worldwide.

JBL 's VERTEC™ Line Array Calculator II software duplicates previous LAC functionality with a similar look and feel, but now offers a more refined work tool with the ability to simulate mixed-model VERTEC arrays.
This includes the entire range of system options, from the fullsize VT4889 line array element and companion VT4880 arrayable subwoofer, through midsize and compact models, to JBL 's newest additions to the VERTEC family, the VT4886 and VT4883 subcompact models.

Enhanced acoustical modeling includes color SPL mapping, 0 dB Isobar, and SPL attenuation modes. Frequency response and SPL based on the tonal balance of JBL 's V4 DSP presets can be selected or, alternatively, maximum SPL for rated power at each frequency can be examined. Up to four frequencies can be simultaneously displayed, and up to six frequency response probes can be entered on up to four defined audience planes.
Additionally, subwoofer modeling is now offered. Useful enhancements have also been made to the mechanical calculations for VERTEC arrays, with updated references for suspension hardware applications. User guidelines are in place for up to 24 enclosures per array.

The Line Array Calculator II Software is available now as a free download at: www.JBLPro.com/VTCalculator
(Save to a folder, unzip, and click on Setup. It is for the Windows operating system.)