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Convenient Functions
Applying Echo to the Mics Sound
Heres how to add echo (reverberation) to the sound of the mic.
Turning the ECHO [LEVEL] knob toward the right will gradually
increase the reverberation. The left half of the knob’s range (OFF–
center) applies a natural-sounding reverb, and the right half of
the range (center – MAX) applies a repeating echo that’s ideal for
karaoke.
If the BA-55 is in stereo mode, an even more spacious echo eect
will be produced.
Reverb Repeating echo
The echo specied by this knob’s setting can be turned on/o using
the mic’s [ECHO ON] switch and [ECHO OFF] switch.
* Echo is applied only to the mic input. It won’t be applied to
sound that is input via the LINE jacks.
Adjusting the Tonal Character
(Equalizer)
Heres how to adjust the tonal character of the sound produced by
the speakers.
Turning the [HIGH] knob toward “+” will boost the upper range,
making the sound brighter.
If the sound is mued, turning this knob toward “+” will make the
sound clearer. If the sound is harsh, turning this knob toward “-“ will
make the sound more mellow.
Turning [LOW] knob toward “+” will boost the low frequencies,
giving the sound more depth.
If the sound lacks depth, turning this knob toward “+” will make the
sound richer. If the sound is muddy, turning the knob toward “-“ will
make the sound clearer.
Preventing Feedback (Anti-
Feedback)
This suppresses acoustic feedback (a whine or howl) caused by the
mic.
What is acoustic feedback?
If a mic is pointed at the speaker, or if the system is operated at a
high volume, an unpleasant oscillation (whine or howl) may occur;
this is called feedback.
The BA-55 provides an anti-feedback function that suppresses
feedback. The anti-feedback function will operate automatically
when any of the MIC [VOLUME] knobs are turned to the right.
MEMO
The ANTI-FEEDBACK indicator will light when the anti-feedback
function is operating. If both of the MIC [VOLUME] knobs are set
to 0, the anti-feedback function will be o.
* If the anti-feedback function is not enough to suppress
feedback, take the following steps
• Change the direction of the microphone
• Move the microphone away from the speakers
• Lower the volume
Sounding a Chime
A chime will sound when you press the [CHIME] button. This is an
ideal way to get the attention of the audience at an event before
making an announcement.
Use the CHIME [LEVEL] knob to adjust the volume of the chime.
17


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