Audio And Power Connections; Connecting To Audio Sources; Audio Outputs; Connecting To Power - AKG HEARO 999 AUDIOSPHERE User Instructions

You may use the HEARO 999 AUDIOSPHERE either free-standing or install it in a 19" rack
using the optional RMU 60 rack mount kit.
You can connect the HEARO 999 AUDIOSPHERE to any analog headphones output (mini
jack or 1/4" jack), to the LINE or REC output of your amplifier, or to an optical or coaxial digital
output.
When using an analog audio source, check that the DIGITAL switch (2) is OUT. When using
a digital audio source, check that the DIGITAL switch (2) is IN.
1. Before connecting the HEARO 999 AUDIOSPHERE to your audio source, switch power
to your audio source OFF.
2. Plug the red RCA connector (right channel) on the supplied RCA/jack cable into the red
LINE IN RIGHT jack (14) and the white RCA connector (left channel) into the white
LINE IN LEFT jack (14) on the HEARO rear panel.
3. Connect the stereo mini jack plug on the RCA/jack cable to the headphones output of
your audio source.
4. If the headphones output on your equipment is a 1/4" jack, plug the supplied mini jack
to 1/4" adapter onto the mini jack. Connect the adapter jack to the headphones output.
1. Before connecting the transmitter to your audio source, switch power to the audio source
OFF.
2. Use a stereo RCA cable (not supplied) to connect the white LINE OUT L or REC OUT L
jack on your audio source to the white LINE IN LEFT jack (14) on the HEARO rear panel
and the red LINE OUT R or REC OUT R jack to the red LINE IN RIGHT jack (14).
1. Switch power to your audio source OFF.
2. Use an optional coaxial cable (mono RCA cable) to connect the coaxial output on your
DVD or CD player, digital TV set, or other equipment to the COAXIAL jack (16) on the
HEARO rear panel.
3. The coaxial input is active when the DIGITAL IN switch (17) is OUT. If the DIGITAL IN
switch (17) is IN, push it once to activate the coaxial input.
1. Switch power to your audio source OFF.
2. Use the supplied fiber optical cable to connect the optical output on your DVD or CD
player, digital TV set, or other equipment to the OPTICAL jack (18) on the HEARO rear
panel.
3. The optical input is active when the DIGITAL IN switch (17) is IN. If the DIGITAL IN
switch (17) is OUT, push it once to activate the optical input.
You can connect each digital input to a digital audio source and use the DIGITAL IN
switch (17) to toggle between the two audio sources.
1. Switch power to your audio source OFF.
2. Use the supplied RCA cable to connect the white "TAPE IN", "AUX IN", or
"PLAYBACK IN" jack on the amplifier to the white LINE OUT LEFT jack (15) and the red
"TAPE IN" , "AUX IN", or "PLAYBACK IN" jack on the amplifier to the red LINE OUT
RIGHT jack (15) on the HEARO rear panel.
3. Refer to the operating manual of your amplifier for instructions on how to listen to and
mute the signal at the TAPE", "AUX", or "PLAYBACK" input. On most amplifiers, you can
push the "TAPE MONITOR" switch IN to listen to the processed signal and OUT to cut
the processed signal.
1. Connect the stereo jack plug on your hardwire stereo headphones to the PHONES
jack (5). You can use the VOLUME control (6) to set the volume of the headphones.
1. Connect the DC cable on the supplied AC adapter to the POWER jack (13) on the HEARO
rear panel.
2. Check that the AC voltage stated on the AC adapter is the same as that
available where you will use the unit. If it is, connect the AC adapter to a conveni-
ent AC outlet.

3 Audio and Power Connections

Refer to sections 3.4, 3.5,
and fig. 1.
3.1 Connecting to
Audio Sources
Note:
3.1.1 Connecting to an
Analog Headphones
Output
Refer to the wiring
diagram in fig. 2.
3.1.2 Connecting to an
Analog LINE or REC
Output
Refer to the wiring
diagram in fig. 3.
3.1.3 Connecting to a
Coaxial Digital Output
Refer to the wiring
diagram in fig. 4.
3.1.4 Connecting to an
Optical Digital Output
Refer to the wiring
diagram in fig. 4.
Note:

3.2 Audio Outputs

3.2.1 LINE OUT
Refer to the wiring
diagram in fig. 5.
3.2.2 PHONES
3.3 Connecting to
Power
Refer to fig. 6.