Using Dolby Ac-3 Pass-Through - E-Mu 404 Owner's Manual

Using Dolby AC-3 Pass-through

USING DOLBY AC-3 PASS-THROUGH
The coaxial or optical digital output of the E-MU 0404 USB 2.0 can pass Dolby
AC-3 encoded 5.1 surround sound audio from your computer to an AC-3 decoder
such as a surround sound AV receiver. This feature allows you to watch DVDs on
your computer and enjoy 5.1 surround sound.
To utilize this feature you'll need:
• DVD playback software that supports Dolby Digital 5.1
(such as WinDVD for the PC or DVD Player on the Mac)
• An AC-3 decoder such as an AV receiver or preamplifier.
• A surround sound playback system.
To Listen to a DVD in 5.1 Surround Sound
1. Connect the S/PDIF coaxial or optical output of the 0404 USB 2.0 to the
digital input of your AC-3 receiver.
WinDVD
2. Make sure the 0404 USB 2.0 is the Default Sound Playback Device" in the
"Sounds and Audio Devices" Control Panel on your PC.
3. Setup your DVD software to, "Output digital S/PDIF to external processor."
Mac DVD Player
4. Select Preferences... located under DVD Player on the Menu Bar.
5. Select the Disc Setup tab.
6. Select Digital Out - E-MU 0404 USB 2.0 as the Audio Output.
7. Click OK
Receiver
8. Set your AV receiver to input from the
proper digital input.
9. Play the DVD. You should be hearing
audio through your system.
10. When the 0404 USB 2.0 is receiving
AC-3, the Direct Monitor and S/PDIF
LEDs will NOT be lit. In addition the
Sample Rate and Sync Source fields in
the Control Panel application will be
greyed out. Otherwise, the 0404 USB
2.0 is not receiving valid AC-3.
0404 USB 2.0 Owner's Manual
0404 USB 2.0 Control Panel
TIP . . .
If you don't get AC-3
passthrough, turn off the
DVD player, then set the
sample rate of the 0404
USB to match the sample
rate of the DVD (usually
48kHz).
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