8EUROLIVE B1220DSP User Manual

4.3Other uses

Monitoring:

When used as a monitor, the B1220DSP receives its audio signal from the monitor or aux output of the mixing console. If additional B1220DSPs are to be used, you can loop the audio signal from the first speaker to the next B1220DSP using the line output. The sound and volume of each B1220DSP can be adjusted with their own operating elements (3) (LEVEL), (7) (EQ HIGH) and (8) (EQ LOW).

Keyboard amplification:

Guitarists and bassists usually have their own amplifiers on stage to make sure they can hear their own instrument - even when no monitors are used. vIn wparticular on smaller stages, the power delivered by these amps is enough to match the volume produced by other sound sources on stage. Things are different with keyboards and synthesizers as these usually have no built-in speakers. The B1220DSP allows you to connect and mix two keyboards. If you want to play more than two keyboards, you can use a submixer (e.g. MicroMIX MX400) to mix down the signals and route them to the B1220DSP using submixer output connectors. The second MIC/LINE input can be used to connect the monitor signal from the PA mixing console, so that you can also hear the other members of your band.

5. Installation

Both audio inputs and outputs of the BEHRINGER B1220DSP are fully balanced. To maximize interference compensation, try to establish balanced connections to other equipment, whenever possible.

◊Make sure that only competent people install your B1220DSP. They must be sufficiently earthed during and after the installation process. Otherwise, electrostatic discharges may negatively affect the operating characteristics of your equipment.

Balanced use with XLR connectors

21

3

input

1 = ground/shield

2 = hot (+ve)

3 = cold (-ve)

12

3

output

For unbalanced use, pin 1 and pin 3 have to be bridged

Fig. 5.1: XLR connector

6. Specifications

Audio Inputs

 

MIC/LINE (2)

XLR (balanced)

 

Input impedance

27 kOhm

 

Sensitivity

-40 to +10 dBu

Audio Outputs

 

 

LINE OUT

XLR (balanced)

 

Output impedance

120 Ohm

Processing

 

 

DSP

24-bit Motorola

 

AD/DA converter

24-bit / 48 kHz

 

Limiter

dual protection for woofer and driver

 

Dynamic EQ

dual parametric EQ’s

 

NOISE GATE

variable (off to -30 dB)

 

TIMED TURNOFF

switchable (3 min < -45 dBr)

 

CONTOUR

switchable speech / music contour

 

EQ HIGH

+/-15 dB (12 kHz)

 

EQ LOW

+/-15 dB (100 Hz)

 

LOW CUT

40 - 160 Hz (24 dB/Oct.)

Loudspeaker System Data

 

 

Frequency range

45 Hz to 20 kHz

 

Crossover

Butterworth, 1.7 kHz, 24 dB/Oct.

 

Max. sound pressure level

127 dB @ 1 m

 

Dispersion angle

90° x 45°

Output Power

 

Low-Frequency Range

 

 

RMS @ 1% THD

320 W @ 8 Ohm

 

Peak Power

460 W @ 8 Ohm

High-Frequency Range

 

 

RMS @ 1% THD

80 W @ 8 Ohm

 

Peak Power

140 W @ 8 Ohm