Behringer B1520DSP User Manual

EUROLIVE B1520DSP User Manual

When the switch is actuated (ON position), the automatic switch-off is 

active. The loudspeaker is turned off auto matically when it receives no signal 

for more than 3 minutes. As soon as a signal is received, the loudspeaker is 

switched back on.

If the switch is not actuated (OFF position) then the speaker remains 

switched on and can only be deactivated via the POWER switch  

(2)

.

(12) 

A noise-gate allows you to eliminate unwanted noise during signal pauses. 

This is done by a circuit that mutes the output when the signal level drops 

below a preset threshold. Use the NOISE GATE control to determine the 

threshold below which the noise-gate closes.

(13) 

The TH LED lights up as soon as the signal level drops below the threshold 

value adjusted with the NOISE GATE control  

(12)

  (the noise-gate closes).

The sound of your B1520DSP largely depends on the room acoustics. 

Please observe the following hints to get the most out of your B1520DSP.

High frequencies are the very part of the audio spectrum that ensure a clear 

perception of sound and speech intelligibility. Although these frequencies can be 

located most easily, they are also the first to be blocked acoustically. We therefore 

recommend that you set up your speakers on speaker stands (not included), 

so that the tweeter radiates its signals slightly above the heads of the audience. 

This will ensure both an optimum dispersion of the high-frequency content and a 

considerably improved speech intelligibility.

Fig. 3.1: B1520DSP mounted on a stand

Always place the microphones (viewed from the audience) behind the B1520DSP, 

never in front of it (Fig. 3.2). When you wish to adjust the controls on the 

B1520DSP while holding a microphone, please approach the loudspeaker from 

the rear to avoid feedback.

Fig. 3.2: Right and wrong positioning

To avoid feedback, it is recommended that you carefully select and direct the 

microphones used. Basically, you should use microphones with a high directivity, 

i.e. with a cardioid or hyper-cardioid polar pattern. Never hold a microphone so 

that its main pick-up area points directly towards the loudspeaker. When you 

hold it with its less sensitive side towards the speaker box, you can move closer 

to the speaker.

With just one B1520DSP and one or two dynamic microphones, you can set up 

a basic audio system with very little effort. Thanks to the built-in mixer section, 

you can connect the microphones directly to the B1520DSP. Mount the B1520DSP 

on a speaker stand for optimum presentation and intelligibility of announcements. 

If one B1520DSP is not enough, you can, of course, use a second or even 

more loudspeakers.

Turn the LEVEL controls  

(3)

  fully to the left

Connect your microphones to the MIC/LINE inputs

Switch on the B1520DSP

Turn the LEVEL controls  

(3)

  gradually clockwise to set the volume of your 

choice. Observe the CLIP LEDs while adusting the volume. Make sure they 

never shine constantly but only light up at peak levels

Use the LINE OUT connector  

(6)

  to connect an (optional) second B1520DSP

XM8500

EUROLIVE B1520DSP

EUROLIVE B1520DSP

Fig. 4.1: Connecting microphones