Behringer EPA900 User's Manual | Page 8
8
EUROPORT EPA900 User Manual
Graphic equalizer
3.6
The EPA900 is equipped with a 7-band graphic equalizer, which enables you to
adapt the sound to the room conditions and your own ideas for the sound.
The equalizer always processes the LEFT/MAIN and RIGHT/MAIN bus equal y.
EQ ON
You can activate the equalizer using the EQ ON switch.
FBQ ON
Using the FBQ ON switch, you can activate the feedback detection circuit.
This function only has an effect if the equalizer is active. For every frequency
that causes feedback, the corresponding LED on a slide control lights up.
Lowering the displayed frequency minimizes feedback.
Effects unit
3.7
The EPA900 is equipped with an internal stereo effects processor, which offers
100 different standard effects, including reverb, chorus, flanger, and echo, as well
as various multieffects. It is permanently integrated into the mixer as a
Send/Return effect; i.e., an adjustable signal portion can be routed to the effects
unit from every input channel. The selected effect is applied to the signal
portions of the channels, and the signals are then mixed with the direct signals
via the stereo bus.
CLIP/SIG
The CLIP and SIG LEDs provide information on the signal level on the effects unit.
When continuously lit up, the CLIP LED indicates a signal overdrive. In this
•
case, the effects unit input level should be reduced through lowering of the
Send level using the EFFECTS controls for the input channels.
The SIG LED signalizes that the effects processor is receiving a signal and is
•
working. If the LED is not lit up, the input signal is too weak.
Fig. 3.6: Graphic equalizer section
Fig. 3.7: Internal 24-bit multieffects unit
PROGRAM (PUSH)
You can turn the PROGRAM control knob to select an effects preset. Then press
the knob to activate the selected effect.
EFFECTS (LEVEL)
The EFFECTS (LEVEL) control is used to adjust the effects signal volume.
Main Power Section
3.8
The operating volume of the sound system is set via the main power section
(MAIN LEVEL CONTROL).
LEFT/MAIN and RIGHT/MAIN
The two controls are used to adjust the volume of the corresponding
loudspeaker outputs.
MODE
With the MODE switch, the power amplifier section can be switched to stereo
or mono mode. Depending on the setting, the limiter, which provides overdrive
protection for the system, works in coupled stereo or independent mono mode.
Always remember to set the switch according to the given application
◊
to avoid incorrect limiter behavior!
Power supply and serial number
3.9
FUSE HOLDER/IEC SOCKET
Connection to an AC power supply is made via an IEC socket. It complies with
applicable safety regulations. A suitable AC power cord is included. Replace the
fuse with a fuse of the same type.
To avoid an electric shock, turn off and unplug the unit before replacing
◊
the fuse.
Fig. 3.8: Control elements in the main power section
Fig. 3.9: Power supply and fuse
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