JETWAY J9BXAS-7A User Manual page 35

• FM: Controls the FM music playback or the recording level.
• Aux-in: Controls the Aux-in music play or the recording level.
• PC-SPK: Controls the external PC speaker input level.
• CX: Controls the CD drive output level, for CD drives configured to play their audio output
through the PC's audio hardware.
• 4SPK: Turn on or turn off the Rear speakers effect.
• SurrounX: Turn on or turn off the 3D surround sound effect.
• SPDIF-in: Turn on or turn off the SPDIF digital signal input.
Mute Buttons: Toggle between muting and enabling the signal. A button with a lit LED is enabled,
and when it is not lit, it means it is mute. Several output signals can usually be enabled at once.
The 4 Speakers System
This Audio Adapter provides 2 wave channels(front/rear), known as the 4 speakers system.
When games or application programs via DirectSound® 3D or A3D® interface locate the sound
sources to the listener's back, the two rear speakers will work to enhance the rear audio positional
effect, so as to complement the insufficiency of using only two front speakers to emulate the
audio effect. The following is the hardware installation and the software setups:
1. The speaker installation.
Connect the front pair speakers to the Line-out jack of the audio adapter, and then connect rear
pair speakers to Line-in/Rear jack of the audio adapter. The original Line-in can be moved to Aux-
in.
2. The positions of the speakers
Put your speakers the way the following picture suggests, so as to avail yourself to the best
audio result.
3.The mixer setup
There is a 4 speakers option in the volume control of the mixer, and when you enable this option,
it means the rear speakers are connected to Line-in/Rear jack. When Line-in/Rear jack is
connected to other external Line-in sources, please DO NOT enable this option in order to avoid
hardware conflicts. Regarding rear speaker option, you can turn on or turn off the output of the
back speakers, and adjust the volume, to have the rear/front speakers have the same volume.
4.The demo
Execute the "Helicopter" demo within the C3D HRTF Positional Audio Demos of this audio adapter.
When the helicopter flies behind you, the rear speakers will work.
Optical Kid for SPDIF/OUT (Optional)
The Optical Kid includes：
33