iPhone X iPhone X producing sub bass note?! (40hz)

[fyun89]

So I had some free time and wanted to see how much low frequency my iPhone X can produce with its internal speakers.

To my surprise, it produced much lower frequency than my 2012 macbook pro retina(lowest produced --above 200hz), iPad Pro 12.9 first gen (140hz), jbl flip 4 (80hz)!!

I dont know what kind of magic they put in to these speakers!! How in the world were they able to make this tiny speakers produce 40hz?!?! I thought laws of physics prevented tiny speakers to make deep bass. They're not strong but it still make the sound. Anyone have any idea what they did differently here with the iPhone X's speakers?

 

[44267547]

So I had some free time and wanted to see how much low frequency my iPhone X can produce with its internal speakers.

To my surprise, it produced much lower frequency than my 2012 macbook pro retina(lowest produced --above 200hz), iPad Pro 12.9 first gen (140hz), jbl flip 4 (80hz)!!

I dont know what kind of magic they put in to these speakers!! How in the world were they able to make this tiny speakers produce 40hz?!?! I thought laws of physics prevented tiny speakers to make deep bass. They're not strong but it still make the sound. Anyone have any idea what they did differently here with the iPhone X's speakers?

I can’t speak for the iPhone X, but Apple did increase the stereo speakers overall loudness by 25% with the iPhone 8 over the iPhone 7 from when the stereo speakers were first introduced.

But the stereo speakers are highly underrated, and are easily one of my favorite features, especially for speaker calls.

 

[Cayden]

As an electrical engineering student, I was pretty skeptical when I first read this. I’ve preiouvsly tested my iPad Pro (9.7) and never could get it to play anything under 60 Hz, and have never encountered a smaller speaker that could produce anything under ~75Hz. I just tested my iPhone 8+ and the cutoff wasn’t until ~30 Hz! Not sure how they’ve been able to do this but it’s quite an amazing feat

 

[Helmsley]

But the stereo speakers are highly underrated, and are easily one of my favorite features, especially for speaker calls.

But calls are in mono? The audio might be coming out of two speakers, but it's still mono.

 

[44267547]

But calls are in mono? The audio might be coming out of two speakers, but it's still mono.

Not the point I was making. The audio is much louder and more crisp in comparison to the iPhone 6s for example. With two speakers, the sound is also more balanced.