Bi-Amping - Behringer EUROPOWER EP2000 User Manual

9 EUROPOWER EP2000/EP4000 User Manual
Fig. 3.6: DIP switch positions for mono-bridged mode
When the amp is overdriven for longer periods of time, the output
◊
signal may occasionally be muted for several seconds. In certain
situations, excessive overdriving may trigger off the automated fuse.
To avoid overdriving the amp, please continually make sure that an
appropriate volume level is applied.
!
Caution
2-Ohm loads should never be applied when in mono-bridged mode.
◊
When connecting a balanced input signal, please make sure to
◊
exclusively use balanced cables for passing the signal further
on. Otherwise, a single unbalanced cable can turn the entire
signal unbalanced.
Safety precautions for mono-bridged operation
◊ Running your amp in mono-bridged mode can quickly result in
excessive overdriving and premature shutting down of the unit
itself. In the worst-case scenario, your loudspeakers may be damaged
permanently. Therefore, you should always make sure that the
speakers you use can indeed handle the power load fed into them.
A voltage of up to 100 V RMS is present between the output connectors
◊
of the EP4000. Always implement appropriate safety precautions when
connecting your speakers to avoid the risk of electric shock.
3.2

Bi-amping

By using an active crossover, you can divide up the frequency range into several
bands. For example, in doing so you can split a mono signal into upper-frequency
and lower-frequency ranges. These two signals can then be hooked up to the
inputs of your amp, so that channel 1 amplifies the lows and channel 2 amplifies
the highs (2-channel operation). The outputs are connected to a 2-way speaker,
whereby the output signal 1 drives the woofer and output signal 2 runs the
drivers. Of course, you can use two separate speakers instead of a single
2-way speaker.
A stereo signal can also be split up analogous to the example described above.
However, to do that you need two 2-way speakers or 4 separate speakers,
two EUROPOWER amps and an active 2-way stereo crossover. The BEHRINGER
SUPER-X PRO CX2310 is optimally suited for this task and offers additionally a
single mono-subwoofer output. By deploying a third EP2000 amp (preferably in
mono-bridged mode) and a subwoofer, you have a perfect setup that adds a
low-frequency system to the stereo bi-amp application (see fig. 3.7). The amp's
input filters for the high/mid-frequency ranges should in this case be engaged
and set at 50 Hz. To remove low, disturbing frequencies from the signal, the input
filter for the subwoofer signal should be set at 30 Hz.
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The BEHRINGER EUROLIVE SERIES loudspeakers are an outstanding solution for
expanding your P.A. system, because each frequency range/application has a
speaker type that optimally suits its characteristics.
Extreme clip limiter settings in bi-amp operating mode can result in
◊
balance shifting.
XENYX 2222FX Mixing Console
L R Stereo out
EUROPOWER EP2000 (Stereo Mode)
Hi Lo
EUROLIVE B1520
Full range loudspeaker
EUROPOWER EP2000 (Stereo Mode)
Hi Lo
EUROLIVE B1520
Full range loudspeaker
EUROPOWER EP2000 (Bridge Mode)
Sub
EUROLIVE B1800X
Subwoofer
Fig. 3.7: Stereo bi-amp mode with a separate subwoofer
SUPER-X PRO CX2310 Crossover