Orban OPTIMOD-PC 1100, Руководство по эксплуатации

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INSTALLATION ORBAN MODEL 1100
Both mixers are functionally identical. They have four inputs:
•
Analog Left/Right
•
Digital 1 Input
•
Digital 2 Input
•
WAVE Out from PC.
About the Interaction between the OPTIMOD-PC Input Mixers
and the Microsoft Windows Mixer
Figure 2-8: : MS Mixer “Master Volume” Figure 2-9: MS Mixer ”Wave In
Volume”
Most PCs have a master WAVE volume control that you can access from the speaker
icon in the System Tray (Figure 2-8). However, OPTIMOD-PC does not use the MS
Mixer Controls or API for mixing because the MS Mixer only allows one active input
at a time. If you are using the OPTIMOD-PC as your computer’s default sound card,
OPTIMOD-PC’s driver defeats the MS Mixer’s Wave In Volume (Figure 2-9), forcing it
to full gain. This attempts to ensure that the OPTIMOD-PC I/O Mixer’s gain is cali-
brated correctly. The reason it cannot predictably do this is that there is another
WAVE gain control in series with the master volume control. This control is located
in the Windows Mixer.
Right clicking the speaker icon and choosing Volume opens the Windows Mixer. This
mixer usually has three or four controls. One is the master volume control, which is
the same control that appears when you click the speaker icon and (to repeat) is de-
feated by the OPTIMOD-PC driver. The other controls are typically (1) WAVE (the
culprit mentioned above), (2) Music Synthesizer, and (3) CD audio mixer controls.
Your computer’s operating system sums the outputs of these controls; their sum is
the WAVE signal applied to the WAVE inputs in the OPTIMOD-PC I/O Mixer.
To ensure correct calibration of the OPTIMOD-PC I/O Mixer WAVE Input, set the
Windows Mixer WAVE control to full-scale. There are certain applications (at this
writing, RealPlayer® is one of them) whose dedicated volume controls operate by