June 17, 2019

Sound Pressure Level (SPL) Distance Calculator

When designing PA systems, especially those for fire/evacuation announcement systems,  SPL at a given distance can be a critical measurement. This handy calculator allows you to determine the dB level at a given distance by inputting SPL rating 1W/1m, listening distance (such as distance to bedhead) and power tap selection.  This can be used with any Redback 100V line speaker.

Go to the SPL Calculator Page

This calculator is provided as a guide only. Redback/Altronics takes no responsibility for its use in critical sound level applications. We recommend obtaining third party confirmation for any critical specification in a system design.