Line Array Calculator Beta

Pick the boxes and describe the room. Get splay angles, a hang drawing, delay times, weights and power for planning and quoting. Built from published manufacturer specs. CONFIRM THE FINAL DESIGN IN THE MANUFACTURER'S SOFTWARE.

Built for quoting and gear pulls: a rough spec to price and pull from, not a final design. It's in active development, and angles and specs get updated as we test them. Send feedback

Project

Project name

Units Weight

Room

First row Mains cover to Room width

Stage height Back row raised Audience

Everything is measured from the downstage edge of the stage. Each hang has a position: + is downstage of the edge, − is upstage. Rig point height is the height of the points you'll hang from (beams, grid or truss). Trim height for each hang is under System. Raise the back row for risers or raked seating.

System

Distance between L and R

Delays

Air temperature (°F) Extra delay (ms)

Extra delay keeps the sound pulling toward the stage instead of the delay speaker. 5 to 10 ms is typical.

Front fill

Subs

Splay angles

More detail

How the angles are worked out

Each box gets a slice of the audience. The top box aims at the back row, the bottom box at the front row, and the boxes in between share the room so the far seats get more boxes (that's what Throw controls). The tool walks down the hang box by box, works out the angle each one needs to hit its target from where it actually sits, then snaps it to the nearest angle that box's rigging allows. You can override any angle.

Levels come from each box's published max SPL, distance (inverse square) and how far off-axis each seat is. They're estimates for comparing designs and spotting dead zones, not predictions. Manufacturers measure max SPL differently, so compare brands with care. Final angles, levels and rigging loads come from the manufacturer's software: L-Acoustics Soundvision, d&b ArrayCalc, Meyer MAPP 3D, RCF Shape Designer.

Splay angles

How the angles are worked out

Box library & sources