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I'm waiting for an active speaker with position measurement and fully digital closed-loop control of the speaker movement.

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Google Philips motional feedback, it wasn't quite digital but the effect was quite noticeable. It also was overkill, nobody cared at the price difference. They're a rarity now.

https://www.soundonsound.com/music-business/story-philips-rh...

They sounded phenomenal for their size.

That exists. It's called a servo subwoofer.

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