Atmos Speaker & Sound Test

You spent thousands on your speakers. Is every one actually working? Find dead channels, fix wiring, and finally hear your room the way it was meant to sound.

You spent good money on a Dolby Atmos system. But is every speaker actually doing its job?

Most of us never really know. A surround speaker wired out of phase, a centre channel that was never connected, a subwoofer set too low — quiet problems that rob you of the experience you paid for, and that you would never catch in the middle of a film.

Atmos Speaker & Sound Test turns your Apple TV into a complete audio test bench. No microphone. No installer. No guesswork.

WHAT YOU CAN DO • See your room — an interactive 3D view of your exact speaker layout. Click any speaker to hear it on its own. • Test every channel — pink noise, sine tones and frequency sweeps on each speaker, from stereo all the way to 9.1.6. • Catch wiring mistakes — isolate a single speaker or compare polarity to reveal dead, swapped or out-of-phase channels in seconds. • Calibrate by ear — a guided walkthrough to level-match every speaker, check phase and dial in your subwoofer crossover. No SPL meter required. • Tune your subwoofer — a dedicated 20–160 Hz sweep finds room boom and nulls, so your bass lands tight instead of muddy. • Test spatial audio — hear a sound travel around and above you to confirm your surround and height channels are alive. • Know your system — an honest read on what your setup actually outputs: channel count, sample rate, Dolby Atmos and DTS readiness. • Check your TV too — full-screen white, black and colour fields plus a moving box for backlight bleed and dead pixels. • Reference demos — Apple's Dolby Vision + Atmos stream and other public clips to show off and stress-test the system.

HOW IT WORKS True discrete multichannel output instead of a stereo downmix, addressed by your receiver's real channel layout (HDMI LPCM or an Atmos bed), with a −20 dBFS reference level — the fundamentals a professional calibrator relies on, built for your living room and the Siri Remote. If your current connection has no channel for a speaker, the app says so instead of playing silence.

BUILT FOR Home theatre enthusiasts, new soundbar and AV receiver owners, anyone who has just rewired their speakers, and anyone who wants proof their system is working.

SIMPLE & PRIVATE • One-time purchase. No subscription, no ads, no account. • No data collected, no server — everything runs on your Apple TV. • In English, German, French, Spanish, Dutch and Turkish.

Great sound was never about buying more gear. It is about knowing the gear you already own is working. Open the app, run a test, and finally hear everything you paid for.

Dolby, Dolby Atmos and Dolby Vision are trademarks of Dolby Laboratories. This app is not affiliated with Dolby or Apple. Privacy Policy: https://callightman.github.io/soundtest/privacy.html