Lenovo S9e Laptop User Guide - IdeaPad S9e and S10e - Page 48

specifications

Page 48 highlights

Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the output of the headphones or earphone connectors do not comply with specifications of EN 50332-2. The headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification limits the computer's maximum wide band true RMS output voltage to 150 mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels. 40 Lenovo® IdeaPad™ S9e and S10e User Guide

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Excessive
use
of
headphones
or
earphones
for
a
long
period
of
time
at
high
volume
can
be
dangerous
if
the
output
of
the
headphones
or
earphone
connectors
do
not
comply
with
specifications
of
EN
50332-2.
The
headphone
output
connector
of
your
computer
complies
with
EN
50332-2
Sub
clause
7.
This
specification
limits
the
computer’s
maximum
wide
band
true
RMS
output
voltage
to
150
mV.
To
help
protect
against
hearing
loss,
ensure
that
the
headphones
or
earphones
you
use
also
comply
with
EN
50332-2
(Clause
7
limits)
for
a
wide
band
characteristic
voltage
of
75
mV.
Using
headphones
that
do
not
comply
with
EN
50332-2
can
be
dangerous
due
to
excessive
sound
pressure
levels.
40
Lenovo
®
IdeaPad
S9e
and
S10e
User
Guide