January 19, 2022 § Leave a comment

As I mentioned earlier, you’ll need the Gravis app to do the majority of the subwoofer’s setup. I grabbed a copy of the Gravis app from the Apple App Store and installed it on my iPhone 11 Pro. The app found the Gravis III within a few seconds and prompted me to connect via Bluetooth. Even once paired, the blue connectivity light on the back of the sub continued to blink every few minutes which was very noticeable when watching movies at night. Fortunately, Sonus faber released a firmware update to address this and now the light will only blink a few times when the Gravis powers up. From the main app screen, you can see the available Gravis subs, a choice of four EQ modes, and a volume level. Choosing the sub you wish to calibrate allows you to select some additional screens. I tried the Auto EQ first. The app prompts you to place your phone near the sub and then triggers a test tone


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