User guide

Source to amplifier
You can connect up to three sources to Sirocco Crossfire: one full
3D positional or surround sound source, and two stereo sources.
3D or surround sound
Source 1 is the 3D sound source. This could be a PC with a 4-
channel audio card for 3D positional sound, such as VideoLogic’s
SonicVortex2, or a home cinema surround sound decoder such as
VideoLogic’s DigiTheatre Decoder.
3D positional sound
You can connect a PC sound card using the cables supplied.
As shown in Figure 1 opposite:
•
Connect your sound card’s front speaker output to Sirocco
Crossfire’s Input 1 front left and front right sockets.
•
Connect your sound card’s rear speaker output to Sirocco
Crossfire’s Input 1 rear left and rear right sockets.
Surround sound
You can connect a surround sound decoder in a variety of ways.
For more information, refer to the documentation that came with
your decoder, but here are some suggestions:
•
To connect for Dolby Digital, connect your decoder’s front left
and front right channels to Sirocco Crossfire’s Input 1 front left
and front right sockets, and the surround left and surround right
channels to Sirocco Crossfire’s Input 1 rear left and rear right
sockets, as shown in Figure 1 opposite.
Now connect the decoder’s Low Frequency Effects (LFE) output
to Sirocco Crossfire’s AC-3 LFE input, as shown in Figure 2.
You can now set your decoder to create a phantom centre
channel, for a four-speaker plus subwoofer home theatre
system. Alternatively, you can use a signal splitter to split your
decoder’s centre channel into two mono channels and connect
directly to your TV’s stereo input, and use your TV’s speakers as
the centre speaker for full surround sound. Refer to your TV’s
documentation to see if you can do this.
•
To connect for Dolby Pro Logic, you can connect the speakers
and use a phantom channel or TV speakers as described
above for Dolby Digital. Alternatively, you can take advantage
of Dolby Pro Logic’s mono surround channel, by connecting
one speaker only to a surround channel, two speakers to the
front left and right channels, and one speaker to centre. Refer
to your decoder’s documentation to see if you can do this.
Stereo sound
Stereo sources connect to Inputs 2 and 3.
•
Input 2 is for connecting full-sized units that use two RCA
phono leads such as CD players, MiniDisc players or analog
cassette players, as shown in Figure 3. Input 2’s sensitivity is
optimised to allow for the higher output of most CD players.
•
Input 3, at the front of the amplifier, is for connecting units that
use a 3.5 mm stereo jack output, such as portable CD players
or MiniDisc players, as shown in Figure 4.
Amplifier to power
Make sure the amplifier is off at the power switch, and that the
volume is turned down at the front of the amplifier (fully anti-
clockwise). Connect the power lead to the power socket on the
back of the amplifier, and switch on the power switch.
Figure 1: Connecting 3D positional or surround sound source
via Input 1
Figure 4: Connecting stereo source via input 3
Figure 2: Connecting LFE channel for surround sound source
Figure 3: Connecting stereo source via input 2