How Effective Is This Speaker Repair Method?

Hello everyone.

I recently came across a method that claims to fix water-damaged speakers by playing a specific sound frequency. Has anyone tried this approach? I'm curious if it actually works for clearing out muffled or distorted audio, or if it's just a gimmick.

I found a site called fixmyspeaker that offers this service—does it genuinely help for both phone and Bluetooth speakers, or are there limitations? If you've used it, did you notice an immediate improvement, or did it take multiple attempts?

I'd appreciate any insights or alternative solutions for improving speaker performance after water exposure.

The speaker on my phone started cutting out during calls, which made every conversation sound like I was underwater. At first I thought it was just signal issues, but it turned out to be a hardware problem. I had it checked out here, and they confirmed it was the internal speaker failing. They swapped it out same-day without wiping anything or messing with the mic. Calls are back to being clear, and music doesn’t sound muffled anymore.