From what I’ve read, using an SPL meter to determine the db level coming out of headphones isn’t something you can accurately do outside of a lab. I’ve read on more than one site about something I’ve seen referred to as the “talking test.” As the theory goes, if you can carry on a regular conversation at a distance of a meter while listening to music through open-air headphones, your volume is under 85db and safe. By regular conversation they mean you should be able to talk at a normal speaking volume (without unintentionally shouting). And you should also be able to understand someone speaking to you at their normal conversational volume. Here’s my question. I’ve read numerous times that normal conversation is 60db. If someone were speaking directly into your open-air headphone cup while you were listening, it would seem to me that the decibel level of the headphone volume would have to be less than 60db (conversation level) in order for you to understand them. A level over or at 60db from your headphones should be too loud to make out their words. And to understand them at “a meter” away, the level in your headphones would have to be even less than that (maybe around 55db). Is my logic correct? The claim is that this test assures you that you’re listening under 85db. But doesn’t it actually assure you that you’re listening somewhere in the 50dbs range? I’m extremely non-technical, so please keep as simple as you can. Thanks.