See I don't know about this...
I've read about these "hacks" to increase volume, seen the app and everything, but my IT side tells me this is not such a good thing...
If the speaker is only so loud at max volume, hate to say it but thats the peak of the speaker. When you start forcing higher db through it to beyond what its designed to run, you start to run the risk of blowing it. Probably not very likely in a cell phone speaker, but if we're talking like a 50% increase in db volume, I'd say thats not the healthiest thing to do to a piece of hardware lol