pentaquine
New Head-Fier
- Joined
- Mar 29, 2013
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I am comparing the sensitivity of two headphones, the AKG K240s, 55 ohms, 91 dB/V, and the Beyerdynamic DT 770 pro, 32 ohms, 96 dB/mW. Both specs are from official websites, and I noticed the unit is different (dB/V vs. dB/mW).
So I converted the AKG number using
91 dB - 10*log10(1000/55) = 78 dB/mW
That is almost 20 dB difference between the two headphones! Does the K240s really need 100 times more power or is there something missing in the calculation?
So I converted the AKG number using
91 dB - 10*log10(1000/55) = 78 dB/mW
That is almost 20 dB difference between the two headphones! Does the K240s really need 100 times more power or is there something missing in the calculation?
