Can you actually jam underwater? Linus and Renzo from Synchrosound geek out on custom pro waterproof speakers, SHOKZ OpenSwim Pro bone-conduction headphones and a budget Monster S620 Bluetooth speaker to find out. They dive into the physics—why high frequencies vanish in water and how bone conduction bypasses that—and put each setup to the test in a swimming pool.
After testing everything from slick custom rigs to off-the-shelf options, they dish out the best picks and handy tech tips so your next lap can come with a killer underwater soundtrack.
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