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EUROLIVE VS1220/VS1220F/VS1520 User Manual
5
Additional Considerations4.
Length and diameter of loudspeaker 4.1
cables
Loudspeaker cables whose diameter is too small can consider-
ably limit the power amp performance. The longer the cable,
the more pronounced the problem. As a result, musicians
often simply “turn up” the amp, which can lead to loudspeaker
damage. Therefore, don’t use cables longer than 15 m (45 ft.).
For most applications, this will not be necessary. Cable diameter
should be at least 14 - 12 gauge.
Power amp rating4.2
Selecting the right amp can turn out to be rather difcult.
Therefore, stick to the following rule of thumb: the power rating
of your amp should be roughly twice the loudspeaker load capac-
ity. A loudspeaker rated at 200 Watts continuous performance
can easily be powered by an amp rated at 400 Watts output
power. An optimal addition to your speaker system would be the
BEHRINGER EUROPOWER EP2000 power amp, for example.
Fuses4.3
We do not recommend the use of fuses with loudspeaker applica-
tions. Damage to loudspeakers can be the result of high peak
signals and high output power. However, fuses can only offer
protection from one of these two factors, and never from both.
Additionally, fuse resistances are sometimes nonlinear, leading
to distortion and unpredictable overdriving.
Protecting your equipment4.4
Always try to nd the optimal signal level. Avoid overdriving •
your amp.
Keep in mind the physical limitations of your PA system.•
Use a limiter to restrict the output signal level. Place the •
limiter between the mixing console and the power amp. For
this purpose, our proven AUTOCOM PRO-XL MDX1600,
COMPOSER PRO-XL MDX2600 and MULTICOM PRO-XL
MDX4600 compressors offer an outstanding solution. All
models can be used as a limiter: the audio signal doesn’t
overdrive any more, and unpleasant “peaks” are effectively
avoided.
Our ULTRADRIVE PRO DCX2496 and SUPER-X CX3400/
◊
CX2310 crossovers are particularly well-suited for protect-
ing your equipment: for each output, they have
independent limiters.
Application Examples5.
Full-range stereo operation5.1
In this example, the main output signal of a mixing console is
connected to a power amplier. Both the outputs and inputs are
stereo. A full-range VS series loudspeaker is connected to each of
the amplier outputs, and these loudspeakers reproduce the
entire frequency range.
EUROLIVE
VS1520
EUROPOWER EP2000
XENYX 1202FX
Fig. 5.1 Full-range stereo operation