Analog/Digital Output; Bass Redirection; Dolby Digital (Ac-3) Decoding - Creative SoundBlaster Live! 5.1 User Manual

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The default for the Analog/Digital Output jack on Sound Blaster Live! is analog output. To switch to
digital output (6-channel or compressed AC-3 SPDIF):
1. On the Surround Mixer, click the Speaker button.
2. In the Speaker view, click the Digital Output Only check box. Digital Output mode is available for all
speaker configurations except headphones.
Or:
1. On the Surround Mixer, click the red plus sign above the volume (VOL) control.
2. In the dialog, select the Digital Output Only option.
To return to analog output mode, clear the option check box.
Dolby Digital delivers five full range channels and one bass-only effects channel. However, most
multimedia speaker systems do not reproduce low-frequency content. Bass redirection allows low-
frequency source content from the front, rear, and center channels to be redirected and added to the low-
frequency source effects (LFE) channel to produce deeper subwoofer output.
To enable bass redirection:
1. On the Surround Mixer, click the Speaker button.
2. In the Speaker view, click the Speaker Selection button and select
5.1 speaker mode.
3. Click the Advanced button.
4. In the dialog, click the Bass Redirection button.
Dolby Digital decoding allows Sound Blaster Live! to decode Dolby Digital output to six discrete analog
channels, such as the Cambridge SoundWorks DeskTop Theater DTT2200 speaker system. Thus, an
external Dolby Digital decoder is not required for you to enjoy multi-speaker surround sound.
To enable Dolby Digital (AC-3) decoding:
1. In the Speaker view, clear the Digital Output only check box.
2. Follow the steps 1 to 3 described in the previous section and then select AC-3 Decode.
3. Remember to set Sound Blaster Live! to Digital Output mode.
To use an external Dolby Digital decoder, do not enable this feature. In addition, you will need a separate
3.5mm-to-RCA jack cable to connect to your decoder.
Using Sound Blaster Live! 12