Behringer B1800X Speaker User Manual


 
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EUROLIVE SERIES
4.2 BI-AMPING operation
s Use the switch on the rear panel of the enclosure to select BI-AMP. Again, you have to remove the frame
first (see chapter 4.1).
s Assign the low-frequency signal to pins 1-/1+ and the high frequency signal to pins 2-/2+ by modifying
your connection cable(s).
4.3 Subwoofer (PASSIVE)
s Assign the full-range signal to input pins 1-/1+. The high-pass signal is present on output pins 1-/1+.
Pins 2-/2+ act as a loop-through.
4.4 Subwoofer (ACTIVE/BI-AMPING)
s Assign the subwoofer signal to pins 2-/2+ by modifying your connection cable(s).
s Use pins 1-/1+ to loop the high-pass signal through to pins 1-/1+ of the full-range enclosure.
s In this operating mode, pins 1-/1+ are always looped through to pins 2-/2+.
5. WHAT ELSE SHOULD BE CONSIDERED?
5.1 Length and gauge of speaker cables
Low-gauge speaker cables can considerably reduce the performance of your power amps, and thus of your
entire system. The longer the cable, the more crucial the gauge. As a consequence, the user tends to turn up
the power amp, which in turn can lead to speaker damage. You should use at least 14-gauge cable12-gauge
is ideal. Try to avoid using cables longer than 30 m (100 ft).
5.2 Power amp performance
Choosing the right power amp can be difficult. The following rule of thumb may be helpful: the amp should
provide about twice as much power as the speakers can handle. A speaker with a continuous power rating of
200 Watts should be driven by power amps with 400 Watts of output power.
5.3 Fuses
We do not recommend the use of fuses for audio applications. Speakers can be damaged by high signal peaks
or high output power. Fuses can only protect the speaker against one of these, but never against both. In
addition, fuses can have nonlinear resistances, which can lead to distortion and unpredictable overdriving of the
speakers.
5.3.1 Protecting your system
s Exercise caution while setting levels and avoid overdriving your power amps.
s Respect the physical limits of your P.A. system.
s Use a limiter to limit the output level. Insert the limiter between the mixing console output and your
power amp. Our proven compressors COMPOSER PRO MDX2200, AUTOCOM PRO MDX1400 and
MULTICOM PRO MDX4400, all of which provide limiter functions, are ideal for this application. Used
properly, they can eliminate overdriving of your audio signals and effectively suppress dangerous signal
peaks.
+ Our crossover network SUPER-X PRO CX3400, which features independent limiters on each
individual output, can also be used to protect your system.
5. WHAT ELSE SHOULD BE CONSIDERED?