26 calculators (43 calculations) for pro-audio sound reinforcement and lighting, as well as reference info and utilities. A super handy tool for people dealing with PA, sound reinforcement, sound systems, electro-acoustics, pro-audio and lighting

- SPL (sound pressure level). Enter sensitivity in dB SPL, power, number of loudspeakers, phase and distance
- SPL sum
- Air absorption attenuation for a given humidity, temperature, frequency and distance
- Ceiling speaker coverage
- Time «» Distance
- Audio frequency «» Wavelength (includes lambda/2 and 2*lambda/3 for line arrays or subwoofer arrays)
- Transition distance for line arrays (near to far field)
- End-fire array

Audio electronics
- dBu «» dBV «» Volts
- Q «» B/W (bandwidth)
- Limiter threshold, attack&releases times
- Amplifier gain

- Speaker cable: low impedance, high impedance (constant voltage line, 70V/100V). Calculates energy and level loss, system damping factor

DMX channel, RGB/RGBW/RGBA and CMY

Reference info such as pinouts (proaudio and lighting) and graphs


What’s New

Version 1.3.0

- New calculator: end-fire arrays, with F2R frequency and polar response
- 1/4λ option on Frequency «» wavelength calculators
- 1-click faster access to audio calculators (menu pre-expanded)
- Assorted UI improvements

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Maxirg2012 ,

Muy buena y util

Solo agregaría un botón volver a la app cuando se consulta el foro desde ella...

DartharCR ,

Gran App

Es de agradecer para los que trabajamos en el campo de audio y iluminación gran aporte. Es super fácil de usar y de gran utilidad. Gracias ¡¡¡

App Privacy

The developer, Jose Brusi, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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