Topic: Safe volume levels with headphones
I recently purchased a pair of AKG K240 MKII headphones, which feature a semi-open design. Previously (for the last ten years), I have used a set of Sony MDR-7506 headphones, which are closed.
As an ex-rocker with tinnitus and slight high-frequency hearing loss, I am terrified by the thought of further damaging my hearing. Consequently, I practice very quietly. The Sony's do a great job of blocking out the squishy key noises of my Kawai ES7, but the AKG's, because of the open design, do not. I am now considering returning the AKG's because they have forced me to turn up the volume on my laptop to compete with key noise.
Am I perhaps being overly cautious? If it gives you any idea, I use a Macbook pro and the volume never goes above notch three on the laptop with headphones (which is around the same loudness of between notches 2-3 out of 9 on the ES7 itself, also with headphones). I even bought a cheap decibel meter and tried to stuff it into my headphones while banging away, which gave me an average reading of 50-55 db. That's safe, but my methods were far from exact and I don't trust the results.
So, how do you determine a safe volume level for extended practice, in order to get the most nuances out of Pianoteq while making sure not to damage your hearing?