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18. FLS (Feedback Locator System):
These LEDs illuminate to indicate the frequency band of highest energy. When feedback
occurs, this system will automatically indicate the graphics slider to use to lessen or eliminate
feedback. (NOTE: These LEDs illuminate with any audio signal, not just during feedback.) If
feedback occurs, pull down the slider under the brightest LED.
19. GRAPHIC EQUALIZERS:
These nine-band equalizers are fixed on one-octave centers. They are designed for 12 dB of
cut and 12 dB boost. They are connected directly to their power amplifier inputs. The signal
sent to each equalizer is determined by the System Mode Switch (20).
20. SYSTEM MODE SWITCH:
This switch is used to configure the XR 800F as either a stereo or dual mono amplifier. It is
recessed to prevent accidental switching during a performance. Use a non-metallic object to
change the switch position (e.g., a toothpick). The XR 800F is shipped from the factory in the
default setting of Left Main to the upper EQ and Right to the lower EQ. When this switch is
depressed it switches the lower EQ to (mono) PA Left + Right. The upper EQ then becomes
the Monitor signal only, creating an entire PA and Monitor mixing system in one small, easy-
to-carry package. And this change is accomplished without a single patch cord!
21. POWER LED:
The power on LED indicator will light when the
unit is powered.
22. MONITOR MASTER FADER: Sets the overall level
of the monitor signal that is sent to the Monitor
Output (9) jack. See page 5.
23. SIGNAL LEVEL METERS: Displays overall level of
either the L and R signals or the Mon and L+R (mix)
signals. The System Mode Switch determines which
mode the meter will operate in. Red Clip LEDs are
located at the top of each meter to indicate clipping.
A clipped signal may damaged your speakers.
To prevent possible speaker damage reduce the
respective fader level.
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