Click on Start, Settings, Control
Panel then NVIDIA nForce Control Panel & select the Speaker
Listening mode. From the drop-down
menu here select the speaker system you are connecting to as appropriate
(Or the closest available option), e.g. if you have the MegaWorks 510D
then select 6 Speakers.
Analog Output. Tick this
option should you be using the nForce's analog outputs to connect to your
speaker system. This would be the most appropriate should you lack a Dolby
Digital decoder to connect to or your nForce motherboard lacks the DICE
(Dolby Interactive Content Encoder). Should
you only wish to use the S/PDIF Output then leave this Unticked.
Digital Output. Tick this
option to enable the S/PDIF Output of your nForce, which will
output audio at 24-Bit, 48kHz. This will provide improved audio quality
over analog output given the generally superior DACs that will be using in
receivers/decoders. This is also required should you wish to use the DICE
feature of your nForce. Should you not have a receiver/decoder to connect
to then Untick this option.
Dolby Surround Encoding. Available
when using Analog Output, Dolby Surround is comprised of front
left/right channels & an additional mono channel used for rear
left/right output albeit with a limited frequency range of 100Hz - 7kHz.
This extra channel is outputted with a regular 2 channel stereo signal
& will only be decoded when connected to a compatible decoder. On
other systems only the stereo channel will be outputted. As with most
up-mixing technologies it would be best to leave this disabled (Unticked)
to ensure optimal audio quality when using analog output, unless perhaps
where you actually can connect to a Dolby Surround decoder.
Dolby Digital Encoding. Tick
this options should you wish to have the nForce encode audio into a
640kbps Dolby Digital stream. This is of course highly recommended should
you be connected to a Dolby Digital decoder via the S/PDIF Output. This
will provide improved audio quality over the analog output in most
instances (Presuming the decoder features better DACs, which is likely). I
would however recommend that you disable (Untick) this when
not playing multi-channel audio, such as CDs or MP3s, as Dolby Digital is
a lossy audio format & this way you can retain the full quality of
such sources, whereas for DirectSound 3D supporting games Dolby Digital
encoding should have no noticeable effect on quality giving the generally
lower quality sources used. This also is not required should you by
sending an AC-3/DTS stream to your decoder either, e.g. via a software DVD
Create Center Channel. When Ticked
this will generate a center channel from non-3D positioned stereo/mono
sources. This is of course only recommended should you desire such
sources, e.g. CD/MP3 played through that channel in addition to the
others. As with most sort of up-mixing features however I'd not
particularly recommend this & would leave it Unticked.
Center Channel 3D Pan. When Ticked
this enables audio to be positioned & output through the center
channel in DirectSound 3D supporting applications/games. You should only Untick
this should you not be using a 5.1 speaker system. On 5.1 systems this
will allow for improved 3D positioning as sources can be played through
the front center channel where appropriate.
Create LFE Channel. Tick this
option to enable the redirection of bass content to a Subwoofer
which requires a separate input, e.g. Videologic DigiTheatre LC, otherwise
you will not be able to get any Subwoofer output on such systems (Bar that
of the LFE channel). On other speaker systems you can leave this Unticked
without issue (As they can create their own Subwoofer content using
on-board bass management), though should you have no subwoofer output
currently then try enabling this to see if it fixes your problem.
This feature can be further customized using the LFE Crossover
Rear Speaker Phase Shift. Should you
find your rear speakers playing audio incorrectly or unusually distorted
then try Ticking this to solve the problem, otherwise you may leave
LFE Crossover Frequency. With Create
LFE Channel enabled this option allows you to adjust the
crossover frequency (50 - 500Hz) to be used, beneath which, such low
frequencies will be directed to the Subwoofer. Increasing this
value will result in a stronger bass output from the Subwoofer & vice
versa. NOTE - Be sure to check your Subwoofers specifications to see what
frequencies it can handle also so that you don't set this too low or (more
importantly) too high.
Premix Volume Levels. Adjust these
sliders to your own preference.
Now select the Main tab.
Equalizer. The equalizer allows you
to adjust the level of amplification for various of frequency ranges -
comprising the Bass (20Hz - 250Hz), Mid (250Hz - 6kHz) & Treble (6kHz
- 20kHz) ranges, thus allowing far greater tuning capabilities. Adjusting
these frequencies can improve audio quality for some sources; although
this is largely dependant on the source itself (Some may benefit from more
bass, others treble, etc.) & your own tastes. Should you want to
adjust these levels then Tick then Enable button.
Input. You can basically ignore
these option unless you'll be recording audio with the Soundcard, in which
case select the appropriate source(s) from the drop-down menu. For optimal
performance you should set the Digitized Input to Off as
Output. Use the Master slider
bar to set the global volume level for Audio output. Move this slider to Up
to increase the global volume level & vice versa. It is
generally recommended that you set these to 70% or thereabouts if you
intend to adjust the Equalizer levels, this will reduce the amount
of amplification the Soundcard can apply to a source, which could cause
audio artefacts at higher levels. Although should you not intend to be
adjust the Equalizer levels then you should be able to increase the
volume level to a much greater level without compromising quality. These
other sliders can be used to adjust the volume level of different audio
sources, moving a slider Up will increase the volume level
of said source & vice versa. I'd also recommend Ticking the Mute
button for any unused sources as well.