John,

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?

Thanks,

Carl

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of John
Woodgate
Sent: Friday, March 29, 2013 12:48 PM
To: [email protected]
Subject: Re: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1

In message <[email protected]>, dated Fri, 29 Mar
2013, Carl Newton <[email protected]> writes:

>
>I have a radio system with wireless headphones and require sound 
>pressure level testing per EN 50332-1.

Are you sure it applies? It applies only to portable music players, which
are not defined in the standard but there has been a lot of controversy
about that and a definition does exist in EN 60065.

For example, it does not apply to a radio system for assisted hearing.
--
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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