Sony MDR-IF630RK User Manual

Audio mode switch
Depress the audio mode switch (VOICE mode) to
emphasize the human voice.  Press to release it
(NORMAL mode) for normal tone quality.

ATT (attenuator) selector
If a loud sound is distorted when the transmitter
is connected to an audio output jack other than
the headphones jack, set the ATT selector on the
transmitter to -12 dB.  The default setting of the
ATT selector is 0 dB.

ATT

–12dB

0dB

Auto power on/off function
When you remove the headphones, the power
turns off automatically.  Do not allow the
suspender to be pulled up, otherwise the
headphones will be switched on.

N

Turn on the audio/video equipment
connected to the transmitter.

When the audio signal is input, the
transmitter turns on automatically and
the infrared emitters glow.  If the
transmitter is connected to the
headphones jack, set the volume
control of the audio source equipment
as high as possible but not so high
that the audio signal gets distorted.

Put on the headphones and the power
turns on automatically.
The power indicator glows red when
the power turns on.

Adjust the volume.