[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Headphone sound pressure level?
Please keep in mind that most of these specifications are only approximate in
any case. To the extent that the left and right ear phones may have
significantly different sensitivity. It's not too difficult to measure the
sensitivity at low and middle frequencies by simply using a small lavalier
microphone taped at the entrance to the subject's ear canals. If you have
access to a pressure microphone calibrator you can calibrate the sensitivity of
the lavaliere microphone. If not, you can at least be sure of the relative
calibration of the two ear cups.
----- Original Message ----
From: Gemma Rachael Hutchinson <gemma@xxxxxxxxxxxxx>
Sent: Wed, July 13, 2011 10:59:43 AM
Subject: Headphone sound pressure level?
We have a set of Sennheiser HD 280 pro headphones with a "sound pressure level"
of 102 dB "as per IEC 268-7". Since it also states a sound pressure level of
113dB/1V rms, we are unsure exactly what the maximum output level of these
headphones actually is. The impedance is 64ohm. Would anyone know how to
calculate this, or does anyone have access to the full international standard
for headphones (e.g., IEC 60268-7), a preview of which can be found at the link