Using Your Earphone Audio Processor (EAP03)
MAIN SCREEN
Pressing any button will turn on the processor. The main screen
will appear on the display as shown at right. The main screen
shows the battery condition, the audio level in dB SPL and a
graphical display of the audio level.
Battery Indication
The battery condition indicator is shown in the upper left of the
display. The approximate amount of battery life is indicated as
100% (fully-charged), 70%, 40%, or 10% (requiring recharge).
Audio Level Indicators
The number on the top right of the display indicates the audio level being reproduced by the
earphones. This number will indicate the level of the audio from the audio input and/or the
integrated microphone, depending on which source(s) are active. On the lower portion of the
display is a bar graph that moves from left to right, indicating the listening level in dB SPL in
3dB steps. If the bar graph reaches the far right a ‘+’ sign appears indicating that the output
is at or near clipping. The audio level indications will only represent the actual levels produced
by the earphones if the earphone sensitivity is correctly entered. See Earphone Sensitivity.
OPERATION
The audio (blue) button enables the audio input, the mic (red) button enables the
microphone input. Either or both may be selected at any time, If neither input is selected
the EAP03 will turn off.
AUDIO INPUT –The audio input is preset to provide a gain of +6dB, this may be adjusted
in the settings menu. See Amplifier Gain for more information. The desired volume level for
the audio output should be set on the attached audio device. The audio input is processed
through the equalizer and 3DX soundfield enhancement circuits, if enabled.
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