Behringer EUROPOWER Professional 4 - Manual (Page 9)

9 EUROPOWER EP4000/EP2000 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.
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 X2222USB Mixing Console
SUPER-X PRO CX2310 Crossover
Stereo out
EUROPOWER EP2000 (Stereo Mode)
EUROPOWER EP2000 (Stereo Mode)
EUROPOWER EP2000 (Bridge Mode)
EUROLIVE B1520 PRO
Full range loudspeaker
EUROLIVE B1520
Full range loudspeaker
EUROLIVE B1800X PRO
Subwoofer
R
Lo Hi
Lo
Sub
Hi
L
Fig. 3.7: Stereo bi-amp mode with a separate subwoofer