M-AUDIO Sonica Theater User Manual

Page 24

Surround Sound Tab

This tab controls the surround sound features of the Sonica Theater.There
are two SRS Labs technologies included with the control panel,TruSurround
XT and Circle Surround II. TruSurround XT takes a multi-channel source
and plays it through two speakers in a way that makes it sound like you’re
playing it back through multiple speakers. Circle Surround II takes a stereo
source and processes that so that it plays through multiple speakers.

Here’s a suggested guide to playing surround sources through your
Sonica Theater:

•

If you’re playing a 5.1 DVD with WinDVD 4 (Windows only), and
you have multiple speakers attached, Circle Surround II should
be unchecked.

•

If you’re playing a 5.1 DVD and you only have two speakers
connected, turn on TruSurround XT.

•

If you’re playing a stereo MP3, CD, or DVD and want to hear it
through multiple surround channels, turn on Circle Surround II.

The TruSurround XT settings only appear if your Current Speaker Set is
set to “Stereo”, “Stereo w/Integrated Subwoofer”, or “Headphones”. The
Circle Surround II settings only appear if your Current Speaker Set is set
to three or more channels.

SRS TruSurround XT Enable

- This control turns on the TruSurround

XT feature.TruSurround XT “virtually” places individual surround channels
where they are supposed to be, as though you have speakers all around
you. Use this feature to turn 5.1 or 6.1 multi-channel sources, such as
Dolby Digital or DTS encoded DVDs, into “virtual” surround from your
stereo speakers.

NOTE: Circle Surround II will not work at 96kHz, when using this
feature the Sampling Rate must be set to 48000Hz or lower. (See the
section following.)

SRS Circle Surround II Enable

- This control turns on the Circle

Surround II feature. Circle Surround II is a patented SRS technology that
solves the problem of playing 5.1 multi-channel content from a two channel
source. It delivers a compelling, virtual surround sound experience through
any multi-channel playback system. It is fully compatible with all
multi-channel formats up to 6.1 channels. Use this feature to turn stereo
sources, such as CDs, MP3s or Dolby Pro Logic encoded DVDs, into 6.1
multi-channel surround.You’ll want to turn this feature off if you’re listening
to a source that’s already playing back in 5.1 or 6.1, such as Windows Media
or a DVD movie.

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