NewTek TriCaster 855 - Manual (Page 65)

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12. Next, drag the Balance slider all the way to the left. As you do so,
observe that the level shown for channel 2 and channel 4 are
gradually reduced. At the extreme left position, these two channels
are completely silent. Only the mid-range tone (on channel 1) is
heard (in a stereo environment), and only from the left speaker at
that.
Moving the slider to the right (of center) has the opposite effect,
reducing channels 1 and 3 – doing so without any effect on the
other 2 channels. At the extreme right position, only the mid-range
tone from the DDR file is audible (and only from the right speaker).
The lesson here is that (unlike either Mono or Pan, considered shortly)
Balance does not ‘move’ audio from one channel to another. You cannot use
Balance to ‘blend’ channel 1 with channel 2, for example. Rather, Balance
regulates the levels for one pair of channels (1 and 3, or 2 and 4) at a time,
and does not affect the other pair in doing so.
Let’s consider the effect of the Mono switch next:
13. Center the Balance control once again, so that you hear the mid-tone exclusively from
the left speaker, and higher tone from the right only.
14. Click the Mono switch. Notice that now a blend of the (channel 1) mid-range tone and
(channel 2) higher tone issue from both speakers.
15. To confirm that for yourself, slide the Balance knob to the extreme left. Although sound
is now issuing only from the left speaker, you can hear both tones.
16. Click Stop in the Sound player.
Note: the Mono switch has no effect on channels 3 and 4. These two channels are never blended
with channels 1 and 2 on output.
Figure 39