In message <[email protected]>, dated Fri, 29
Mar 2013, Carl Newton <[email protected]> writes:
I'm walking on new ground with this one. I have an automotive audio
system with a wireless connection to portable headphones for use within
the vehicle. Because they are wireless, the headphones have their own
internal speaker amplifiers and volume adjustment. The sound source is
external and not portable, but the headphones appear to qualify as
portable. What's your take on this?
It isn't a portable music player within the definition is EN 60065. One
criterion is that you can *walk around* with the *player* and headphones
on your person. Your player is fixed in the car, and I don't suppose you
can walk around in the car!
Having said that, your system could be used for listening to music for
long periods, so I recommend that you do restrict the maximum sound
level to 100 dB SPL. A measurement using a 1 kHz sine wave and an IEC
60318-1 simulator should be sufficient.
EN 50332-1 is only a 'method of measurement' standard; the safety
requirements are in EN 60065, and your system might not be able to
support all of them (such as the automatic warnings).
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
Which Thunderbird will David Miliband pilot? Or will he drive Lady Penelope?
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
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