Calculator II

Launched in 2009, JBL’s CBT Series line array column loudspeakers incorporate Constant Beamwidth Technology, which uses passive beam-forming components to deliver constant directivity coverage from a non-powered column. The Californian manufacturer has now introduced its Constant Beamwidth Technology (CBT) Calculator 1.00 software, which shows the vertical coverage of JBL CBT line array column loudspeakers via an on-screen, cross-sectional sound level coverage display at user-selectable frequencies. The CBT Calculator allows the use of either one or two JBL Professional CBT loudspeakers, while virtually adjusting their various settings for vertical coverage (narrow or broad) and voicing (speech or music/flat) in a space with up to four independent listening planes. The software also shows frequency response for up to six listener locations in addition to an SPL summary of each location over user-defined frequency bands. System designers can now determine the best CBT model, the proper vertical coverage and voicing settings, mounting height and down angle, enabling accurate design of the CBT column line array speakers into virtually any application.

The new Line Array Calculator II duplicates previous LAC functionality, but it now enables system designers and technicians to simulate mixed-model VerTec arrays. Enhanced acoustical modeling with colour graphical representation of results includes SPL mapping, 0dB Isobar and SPL attenuation modes. Frequency response and SPL based on the tonal balance of JBL’s V4 DSP presets can be selected or maximum SPL compatible with EASE modeling predictions 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.  Subwoofer modeling is also offered and enhancements have also been made to the mechanical calculations for VerTec arrays with updated references for suspension hardware applications.

Available: Now for free download

Web: www.JBLPro.com/VTCalculator

Web: www.JBLPro.com/CBTCalculator

Tel: +1 818 894 8850