Behringer B1800x Pro Manual Do Utilizador

EUROLIVE PROFESSIONAL SERIES

5. ADDITIONAL CONSIDERATIONS

3.3 PARALLEL Input

(B1220 PRO and B1520 PRO)

The EUROLIVE B1220 PRO and B1520 PRO loudspeakers

feature two speaker inputs laid out in parallel. You can

alternatively connect one of the connectors to the output on

your power amp and tap into the signal from the amp once again

on the second connector, in order to, for example, feed this

signal into an additional loudspeaker. This way, you can create

stacks consisting of speakers with different impedance values.

ATTENTION: Never connect the output signals of

different power amps to both parallel inputs at the

same time. This may permanently damage your

setup.

4. PIN ASSIGNMENT (B1800X PRO)

PINS 1-/1+

PINS 2-/2+

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INPUT:

Full-range input

OUTPUT: high-pass

output

Signal loop

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Signal loop

Subwoofer input

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Table 4.1: Pin assignment

4.1 Subwoofer (PASSIVE)

Feed the full-range signal to the input PINS 1-/1+. The high-

pass signal can be tapped into at the output PINS 1-/1+.

PINS 2-/2+ serve as a signal loop through.

4.2 Subwoofer (BI-AMPING)

Connect the subwoofer signal to PINS 2-/2+.

PINS 1-/1+ of the input are connected to PINS 1-/1+ of the

output, and can be used to loop the signal through.

In general, when in BI-AMPING mode, PINS 1-/1+ and PINS

2-/2+

are looped through

5. ADDITIONAL CONSIDERATIONS

5.1 Length and diameter of loudspeaker cables

Loudspeaker cables whose diameter is too small can limit the

power amp performance considerably. The longer the cable,

the greater the problem. As a result, musicians often simply

turn up the amp, which can lead to loudspeaker damage.

Therefore, dont use cables longer than 15 m (45 ft.). For most

applications, this will not be necessary. Cable diameter should

be at least 2.5 - 4.0 mm

5.2 Power amp rating

Selecting the right amp can turn out to be rather difficult.

Therefore, stick to the following rule of thumb: the power rating

of your amp should be roughly twice the speaker load capacity.

A speaker rated at 400 Watts continuous performance can easily

be powered by an amp rated at 800 Watts output power. An

optimal addition to your speaker system would be the BEHRINGER

EUROPOWER EP2500 power amp, for example.

5.3 Fuses

We do not recommend the use of fuses with audio applications.

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 resistors are sometimes nonlinear, leading to distortion and

unpredictable overdriving.

5.3.1 Protecting your equipment

Always try to find the optimal signal level. Try to 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 doesnt

overdrive any more, and unpleasant peaks are effectively

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.