OPTiK
100+ Head-Fier
- Joined
- Dec 10, 2008
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So I picked up a Extech 407730 SPL meter, and I've been playing around with it to see how loud my x10's are at my normal listening level, but I'm not sure the reading is "right". When I play my speakers 90db at the speaker, its actually ~75db when it reaches me (put the meter next to the speaker, then in front of me). The thing is, when I put my x10 in the hole and create a seal, the meter reads 85-90db, but if I have one iem in and the other ear off, then the music on the iem ear sounds lower than the music coming out of my speaker which is about 10-20 db lower. Has anyone else done spl meter testing?
Now, the distance between the IEM and the microphone is about .2-.3cm when measured. The distance between our ear opening and ear drum is longer than that (i dont have my molds anymore so I cant measure my own). Is it safe to assume that that distance along with the ear wax in our ears dampen the sound by X db? So a reading of 90db in fact is not 90db when it hits our ear drum? You can listen to sound at 91db for 2 hours without having ear damage from the literature that I read. According to the meter thats the sound coming out at my normal listening level, but it seems rather high. Well I was hoping to get some discussion out of this, any input would be appreciated
Edit: Also, when the speaker reads 80db and I put it next to my ear it sound waay louder than the iem that registers at 90.
Now, the distance between the IEM and the microphone is about .2-.3cm when measured. The distance between our ear opening and ear drum is longer than that (i dont have my molds anymore so I cant measure my own). Is it safe to assume that that distance along with the ear wax in our ears dampen the sound by X db? So a reading of 90db in fact is not 90db when it hits our ear drum? You can listen to sound at 91db for 2 hours without having ear damage from the literature that I read. According to the meter thats the sound coming out at my normal listening level, but it seems rather high. Well I was hoping to get some discussion out of this, any input would be appreciated
Edit: Also, when the speaker reads 80db and I put it next to my ear it sound waay louder than the iem that registers at 90.