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Model 233 User Guide Issue 1, September 2007
Studio Technologies, Inc. Page 25
Headphone Output Operating Modes
The user is provided with three rotary level
controls (“pots”) that are associated with
the headphone output. Switches SW4-1,
SW4-2, and SW4-3 are used to configure
the way two of the controls, the one lo-
cated on the far left and the one located in
the center, function. (These settings don’t
impact operation of the sidetone level con-
trol which is located on the far right.) With
just these three switches a wide range of
operating modes can be configured. Care-
fully reviewing the capabilities of the avail-
able functions may prove worthwhile.
Dual-Channel or Stereo Mode
Switch SW4-1 is used to select whether
the control located on the far left and
the control located in the center provide
a dual-channel (“level/level”) or stereo
(“level/balance”) mode of operation. In
the level/level mode these two controls
operate independently, each controlling
the level of one of the headphone output
channels. This mode is generally used
for on-air broadcast applications where
independent cue signals are provided to
the left- and right-headphone channels. In
the level/balance mode the control on the
far left sets the overall output level for both
headphone channels. The center control
is used to adjust the balance (the relative
levels) of the left and right channels. This
mode is generally best suited for applica-
tions where a stereo cue source is being
provided.
Reverse Left/Right Mode
Switch SW4-2 is used to select whether
two of the rotary controls are in the nor-
mal or reverse left/right mode of opera-
tion. When selected to the normal mode,
and level/level mode is also selected, the
control on the far left adjusts the level of
headphone output’s left channel. (This is
the signal that appears on the tip lead of
the ¼-inch 3-conductor jack.) The center
control adjusts the level of the right chan-
nel. When selected to the normal mode,
and the level/balance mode is also se-
lected, turning the balance control in the
counterclockwise direction increases the
perceived level of the left channel, and
vice versa.
As you may have already guessed, when
selecting the reverse left/right mode of op-
eration everything is reversed! To be more
specific, when selected for reverse mode,
and the level/level mode is also selected,
the control on the far left adjusts the
headphone output’s right channel (output
jack’s ring lead) while the control in the
center adjusts the left channel. When se-
lected to the reverse mode, and the level/
balance mode is also selected, turning the
balance control in the counterclockwise
direction increases the perceived level of
the right channel, and vice versa.
The reverse mode is provided specifically
for cases where a headset’s left and right
earpieces are placed on a user’s head in
a reverse orientation. This ensures that the
Figure 15. Headphone control mode settings
Figure 16. Headphone control operation settings