Enabling Bass Redirection

Dolby Digital delivers five full range channels and one bass only effects channel. However most 

multimedia speaker systems have satellite speakers that usually do not reproduce low frequency 

content. Enabling bass redirection allows low frequency source content from the front, rear and 

centre channels to be redirected and added to the low frequency source effects (LFE) channel to 

produce deeper subwoofer output. This feature is useful for producing bass in games or 

Some subwoofers may not be able 

to reproduce excessive bass. We 

applications that have only front and rear channel content. To enable bass redirection:

recommend that you set the 

subwoofer volume slider to a low 

1. In the Main deck of the Surround Mixer, click the 

level before you enable bass 

Speaker

 button.

redirection. Thereafter, increase 

2. In the Speaker view, click the 

Speaker Selection

 button 

the volume level to a comfortable 

to select the 5.1 speaker mode if it is not selected.

level.

3. Click the 

Advanced

 button.

4. In the dialog box that appears, click the 

Bass Redirection

button. When enabled, the button is orange.

Enabling Dolby Digital 

By enabling Dolby Digital decoding, the SB Live! card will decode Dolby Digital stream to six 

(AC-3) Decoding

discrete analog channels. The Cambridge SoundWorks DeskTop Theater DTT2200 speaker 

system is an ideal match for this usage. 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 click the 

AC 3 Decode

button if it is not yet enabled.

However, if you wish to use an external Dolby Digital decoder, do not enable this feature. This 

setting will pass through compressed Dolby Digital (AC 3) PCM SPDIF output from the 

Analog/Digital Out jack. Remember to set the SB Live! card to the 

Digital Output

 mode. In 

addition, you will need a separate 3.5mm to RCA jack cable to connect to your decoder.

Using Sound Blaster Live! Player 5.1 3 5