Behringer Eurolive VS1220F Manuale Proprietario

EUROLIVE VS1520/VS1220F/VS1220 User Manual

For the VS series, here are typical connection scenarios:

Two 8 Ohm speakers in parallel = 4 Ohms

Four 8 Ohm speakers in parallel = 2 Ohms

Two 4 Ohm speakers in parallel = 2 Ohms

Four 4 Ohm speakers in parallel = 1 Ohm

We have developed the VS 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 loudspeakers.

Here are some tips to get optimal sound and performance from 

your loudspeaker(s):

Elevate the loudspeaker at or above head level. High frequencies are 

the segment of the audio spectrum responsible for clarity and speech 

intelligibility. They can get muffled by the front row of the audience, 

so we recommend positioning your loudspeakers so the high-frequency 

drivers are slightly above the height of the audience. The more you can get 

everyone in direct earshot, the better. Imagine the loudspeaker is a giant 

flashlight, and you want to illuminate everyone in the room

Avoid placing full-range loudspeakers in a corner or right next to a wall. 

This enhances the low frequencies and can cause the sound to get muddy. 

Subwoofers may be placed almost anywhere since low frequencies are not 

highly directional

Make sure that the loudspeakers are not in a place where they could 

be knocked over by dancing audience members, overly eccentric stage 

performers, sudden earthquakes, etc.

Some rooms, such as gymnasiums and auditoriums, create a large amount 

of natural reverb, making it difficult to maintain intelligible sound. 

Laying carpet or rugs on the ground and curtains across windows or 

brick walls will help dampen the reflections and improve the overall sound

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

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

monitors or an in-ear monitoring system to allow the stage performers to hear.

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

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

loudspeakers. 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 loudspeakers away from the record 

player and remove them from the stage, so that they are located on firm ground. 

Another option is to use raised stands, which prevent the loudspeakers from 

having a direct contact with the ground.

Try to prevent damage to your loudspeakers caused by extreme oscillation 

of the low-frequency driver due to subsonic noise and extremely deep 

frequencies. Use an equalizer to cut off those frequencies that fall below 

your loudspeakers’ 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 low-frequency driver.

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.

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 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.

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 offer protection from one of these two factors, and never 

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

distortion and unpredictable overdriving.

Always try to find 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