Behringer Eurolive Professional B1800X PRO 사용자 설명서

EUROLIVE B2520 PRO/B1800X PRO/B1520 PRO/B1220 PRO User Manual

This user’s manual is structured in such a way to give you an overview about the 

application options of your EUROLIVE PROFESSIONAL speakers, giving you at the 

same time important information about optimizing your PA system. Should you 

require detailed explanations about specific subjects, please visit us on the 

internet at behringer.com.

We have developed the EUROLIVE PROFESSIONAL SERIES for use in a wide range 

of possible applications. Of course, the sound of your loudspeakers depends on 

the acoustic characteristics of the room/space in which they are being used. 

The following chapters of this manual will give you information about getting 

the most out of your EUROLIVE speakers.

High frequencies are the segment of the audio spectrum responsible for clarity 

and speech intelligibility. These frequencies are the easiest ones to locate, 

but at the same time they are also the easiest ones to “obstruct.” Therefore, 

we recommend positioning your speakers so that the HF drivers are located 

slightly above the height of the audience. This guarantees the best possible 

dispersion of high frequencies and a considerably higher intelligibility.

2.1.1  Directional pattern of asymmetrical HF drivers
An outstanding feature of the B1220 PRO, B1520 PRO and the  B2520 PRO are their 

asymmetrically formed horns (“Asymmetrical Dispersion Constant Directivity 

Horn”). By turning the horns 90°, you can optimize the directional pattern for 

both vertical and horizontal speaker positioning. The default horn setting is the 

“front of house” vertical configuration, whereby the wide dispersion side (100°) is 

pointed downward and the narrow dispersion side (50°) is pointed upward. If you 

want to position your speaker horizontally (as a “floor” monitor), you can modify 

the horn position to assure optimal dispersion  

(turning the horn by 90°). Please do the following:

(1) 

Remove the speaker cover by carefully and uniformly pulling off the 

steel grill.

(2) 

Unfasten the four screws with which the horn is mounted.

(3) 

Turn the horn 90°, so that the wide dispersion side (100°) points upward 

when the loudspeaker is lying horizontally on its side.

(4) 

Mount the horn back into its place with the four previously 

unfastened screws.

(5) 

Set the grill back into its place and press gently until it snaps into position.

Always place the “front of house” speakers ahead of the microphones 

(from the audience’s perspective), and never behind. Use professional floor 

monitors (e.g. B1220 PRO, B1520 PRO or B2520 PRO) or an in-ear monitoring 

system to hear the stage performers.

In applications with record players, bass feedback can occur. Bass feedback 

occurs when low frequencies get back to the pickup and are re-reproduced on 

the speakers. The most common causes for this are: speakers located too closely 

to the record player, a room with a wooden floor, or presence of a podium or a 

platform. In such cases, it is best to move the speakers away from the record 

player and “banish” them from the stage, so that they are located on firm 

ground. Another option is to use raised stands, which prevent the speakers from 

having a direct contact with the ground.

Try to prevent damage to your speakers caused by extreme oscillation of the 

bass membrane due to subsonic noise and extremely deep frequencies. Use an 

equalizer to cut off those frequencies that fall below your speakers’ frequency 

range, or use a low-cut/high-pass filter. Most equalizers and sound-improvement 

systems offer a low-cut function, like the BEHRINGER ULTRAGRAPH DIGITAL 

DEQ1024, for example.
Using a low-cut filter in your signal path is particularly recommended if you 

use record players or CD players as your signal source. CD players often produce 

extremely deep frequencies, which can lead to extreme excursions of the 

bass membrane.

The EUROLIVE PROFESSIONAL SERIES subwoofer can run in two ways: in PASSIVE 

and BI-AMPING mode. The B1800X PRO can be switched from BI-AMPING 

to PASSIVE by using the switch located in the back. For all applications, 

your EUROLIVE speakers are connected using the speaker inputs.

The subwoofer features an internal crossover. Running the B1800X PRO in passive 

mode makes it ideally suited for working together with the 2-way B1220 PRO, 

B1520 PRO and B2520 PRO systems. This way, you achieve an absolutely balanced 

sound characteristic. However, if you select the BI-AMPING mode, your subwoofer 

can be combined with other EUROLIVE 2-way systems. The BI-AMPING operating 

mode offers several primary advantages: lower distortion, greater flexibility of 

signal transmission as well as an improved overall performance of your system. 

The PASSIVE operating mode has the advantage of requiring no additional 

crossovers in order to keep the subwoofer’s frequency range within its limits.
If you are using an external crossover, e.g. the BEHRINGER ULTRADRIVE PRO 

DCX2496, pay attention to chapter 8, “Specifications.” There, you will find 

information about the recommended crossover frequency range. We recommend 

a slope rate of at least 12 dB, whereby a higher value guarantees the best possible 

performance. A slope rate of 24 dB is ideal.
Our recommendations are only examples of possible interactions between 

different EUROLIVE speakers. Depending on your own personal sound 

requirements and the genre of the music being played, other combinations are 

of course possible.

The B1800X PRO subwoofer from the EUROLIVE PROFESSIONAL SERIES features 

two speaker connectors. In BI-AMPING mode, the PINS 2-/2+ of the input are 

connected directly with the speaker. PINS 1-/1+ of the input are connected to 

the PINS 1-/1+ of the output and the signal can be simply looped through. To this 

end, please adhere to the specifications given in chapter 4.