Linus and the team tackle the challenge of jamming underwater using everything from custom hydro-acoustic speakers by Renzo at Synchrosound to bone-conduction SHOKZ OpenSwim Pros and even budget Amazon Bluetooth speakers. They explain why high frequencies die off underwater and show how each gadget fares in pool tests.
Spoiler: pro-grade underwater speakers deliver the deepest bass, bone conduction wins at clarity without being in your ears, and cheap waterproof speakers… well, they get you by. Packed with geeky physics, hands-on testing, and practical tips, it’s the ultimate guide for turning lap swimming into a private concert.
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