Bedienungsanleitung Behringer VP1220 (Seite 6 von 10) (Englisch)

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6 EUROLIVE VP2520/VP1800S/VP1520/VP1220F/VP1220 User Manual

4. Additional Considerations

4.1 Length and diameter of loudspeaker cables

Loudspeaker cables whose diameter is too small can considerably 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.

4.2 Power amp rating

Selecting the right amp can turn out to be rather dicult. Therefore, stick to

the following rule of thumb: the power rating of your amp should be roughly

twice the loudspeaker load capacity. 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.

4.3 Fuses

We do not recommend the use of fuses with loudspeaker applications. Damage to

loudspeakers can be the result of high peak signals and high output power.

However, fuses can only oer protection from one of these two factors, and never

from both. Additionally, fuse resistances are sometimes nonlinear, leading to

distortion and unpredictable overdriving.

4.4 Protecting your equipment

• 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

AUT O-XL MDX1600, COMPOSER PRO-XL MDX2600 and MULTICOM PRO-XL

MDX4600 compressors oer an outstanding solution. All models can be used

as a limiter: the audio signal doesn’t overdrive any more, and unpleasant

“peaks” are eectively avoided

◊ Our ULTRADRIVE PRO DCX2496 and SUPER-X CX3400/CX2310 crossovers

are particularly well-suited for protecting your equipment: for each

output, they have independent limiters.

5. Application Examples

5.1 Full-range stereo operation

This example applies to the VP1220, VP1220F, VP1520, and VP2520.

In this example, the main output signal of a mixing console is connected

to a power amplier. Both the outputs and inputs are stereo. A full-range

VP series loudspeaker is connected to each of the amplier outputs, and these

loudspeakers reproduce the entire frequency range.

EP2000VP1520

XENYX 1202FX

L R

Fig. 5.1: Full-range stereo operation

5.2 Full-range stereo operation

with oor monitors

This example applies to the VP1220, VP1220F, VP1520, and VP2520.

This example is a variation of the example above, with the addition of several

VP1220F oor monitors. Two separate monitor outputs from the mixing

console are connected to the inputs of a stereo power amplier. A VP1220F is

connected to each amplier output, and a second VP1220F is connected to the

parallel outputs of the rst set of VP1220F monitors.

AUX 1

SEND

AUX 2

SEND

EP2000

VP1220

VP1220F

X2442USB

Fig. 5.2: Full-range stereo operation with oor monitors

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