3. The packaging of the equipment is recyclabe. To dispose
of the packaging, make sure to use a collection/recycling
system provided for that purpose and observe local
legislation relating to waste disposal and recycling.
4 Unpacking
Your headphone system package contains the following com-
ponents:
If any of the above items should be missing from the package,
contact your AKG dealer immediately.
>
K 910 HEADPHONES
>
T 910 TRANSMITTER
>
CONNECTING CABLE
WITH STEREO MINI JACK PLUG
AND L/R RCA PLUGS FOR CONNECTING THE
TRANSMITTER TO YOUR AUDIO SOURCE
> STEREO MINI JACK to 1/4“
ADAPTER JACK
>
AC ADAPTER
FOR POWERING THE TRANSMITTER
(12 V DC, 200 mA)
>
TWO 1.2 V AAA SIZE NIMH, 550 mAh
RECHARGEABLE BATTERIES
FOR POWERING THE HEADPHONES
5 Controls
5.1 Headphones (Fig. 1)
(1) POWER:
switches power to the headphones ON and OFF
(2) Status LED:
illuminates to indicate power to the head
phones is ON
(3) Charging socket
(4) Battery compartment
(beneath the detachable ear pad)
(5) AUTOTUNING switch and LED:
activates the
automatic tuning function
(6) VOLUME:
control
5.2 Transmitter (Fig. 2)
(7) AUDIO IN:
audio input jacks
(8) DC 12 V:
DC input jack for AC adapter
(9) FREQ:
frequency selector
(10) Charging contacts
(11) POWER ON:
this green LED is lit to indicate power to the
transmitter is on
(12) CHARGE:
this red LED is lit to indicate the batteries
inside the headphones are being charged
6 Setting Up
6.1 Connecting the Transmitter to AC Power
1. Connect the cable on the supplied AC adapter to the
DC 12 V
jack (8)
on the transmitter rear panel as shown in fig.3.
2. Check that the AC voltage stated on the AC adapter is the
same as that available in your country. If it is, connect the
AC adapter to a convenient AC outlet (see fig. 4). The
transmitter will automatically be ready to operate.
Note that the transmitter will switch on as soon as it detects
an audio signal at one of the AUDIO IN jacks.
6.2 Connecting the Transmitter to Your Audio Source
You may connect the transmitter to a headphone output (mini
jack or 1/4“ jack), LINE, or REC outputs.
6.2.1 Connecting to a Headphones Output
1. Before connecting the transmitter to your audio source,
switch the audio source OFF.
2. Referring to fig. 5, plug the red RCA connector (right
channel) on the supplied connecting cable into the
red
AUDIO IN R socket (7)
and the white RCA connector (left
channel) into the
white AUDIO IN L socket (7)
on the
transmitter rear panel.
3. Connect the stereo mini jack plug on the connecting cable
to the headphones output of your audio source (fig. 6).
4. If the headphones output on your equipment is a 1/4“
jack, plug the supplied mini jack to 1/4“ adapter jack onto
the connecting cable. Connect the adapter jack to the
headphones output.
6.2.2 Connecting to a LINE or REC Output
1. Before connecting the transmitter to your audio source,
switch the audio source OFF.
2. Referring to fig. 7, plug the red RCA connector (right
channel) on the supplied connecting cable into the red
LINE OUT R or REC OUT R socket and the white RCA
connector (left channel) into the white LINE OUT L or REC
OUT L socket on your audio source.
3. Connect the stereo mini jack plug on the connecting cable
to the
stereo jack (7)
on the transmitter rear panel
(see fig.8)
6.3 Charging the Batteries
In order to ensure the longest possible service life for the
rechargeable batteries, we deliver them uncharged.
Therefore, you will need to charge the supplied batteries
before first operating your headphones system.
> IMPORTANT!: If you operate the headphones on dry
batteries (see section 6.4), never try to charge the
batteries using the transmitter’s charging feature. This
would cause serious damage to your headphone system.
Dispose of dead batteries conforming to local waste
disposal rules.
1. Remove the ear pad from each earphone as shown in fig. 9.
2. Referring to fig. 10, insert a battery into each
battery com-
partment (4)
. Make sure to align the batteries with the
polarity marks inside the battery compartments.
3. Replace the ear pads on the earphones.
4. Referring to fig. 11, place the headphones on the transmitter
such that the
charging contacts (3)
on the bottom of the
right-hand earphone will engage the
charging contacts (10)
on the transmitter.
The
CHARGE LED (12)
on the transmitter will be lit to indicate
that the batteries in the headphones are being charged.
The batteries will be fully charged after approximately 24
hours. (The
CHARGE LED (12)
will remain lit.) You may
leave the headphones on the transmitter for as long as
you like without risking to overcharge the batteries
> IMPORTANT: To maintain full battery capacity for as
long as possible, discharge the batteries completely
about once a month:
1. Switch the headphones on and leave them outside the
transmitter until the
status LED (2)
extinguishes.
2. Recharge the batteries as described above.
6.4 Replacing Batteries
The capacity of any rechargeable battery will decrease over
time. If you feel that you need to recharge the supplied batteries
more often than would be convenient, replace
both
batteries
with new AAA size, 1.2 V, 550 mAh rechargeable or 1.5 V
alkaline dry batteries.
1. Remove the ear pad from each earphone as shown in fig. 9.
2. Remove the dead batteries.
3. Referring to fig. 10, insert one new battery into each
battery
compartment (4)
. Make sure to align the batteries with
the polarity marks inside the battery compartments.
4. Replace the ear pads on the earphones.
6.5 Setting Up the System
1. Remove the headphones from the transmitter.
2. Switch ON the audio source to which the transmitter is
connected.If audio signal is present at the transmitter input,
the
POWER ON LED (11)
on the transmitter will be lit
constantly.
> NOTE: If no signal arrives at the transmitter input for
approx. 3 minutes, the transmitter will automatically
switch off and the
POWER ON LED (11)
will extinguish.
3. Set the
FREQ selector (9)
on the transmitter to its center
position.
4. Use the
POWER switch (1)
to switch the headphones on,
so that the status
LED (2)
will be lit.
5. Press the
AUTOTUNING switch (5)
on the headphones.
The red AUTOTUNING LED will be lit.
The Autotuning function will automatically tune the reception
frequency to the carrier frequency set on the transmitter.
After a few seconds, you should hear the signal in
the headphones clearly and free of interference.
If your first try fails, set the
FREQ selector (9)
on the
transmitter to a different position and press
AUTOTUNING (5)
again.
FREQ (9)
lets you select one of three different carrier
frequencies.
6. Set the
VOLUME control (6)
on the headphones to the
desired volume level.
6.6 POWER ON/CHARGE LED Indications
CHARGE
POWER ON
STATUS
OFF
LIT
Transmitter is connected to AC
power and audio source and
receives signal.Headphones are
not on the transmitter, charging
function is off.
LIT
OFF
Transmitter is connected to AC
power. Headphones are on the
transmitter, charging function is on.
OFF
OFF
Transmitter has detected no signal
for several minutes, headphones
are not on the transmitter, charging
function is off, OR transmitter is
not connected to AC power.
ENGLISH
08_09
21752_CorpDes_AKG_BDA_910_Int_0807.indd 14-15
11.09.2007 9:41:32 Uhr
