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8 EUROLIVE B1220DSP User Manual
4.3 Other 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,
youcan loop the audio signal from the rst 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 amplication:
Guitarists and bassists usually have their own ampliers on stage to make
sure they can hear their own instrument - even when no monitors are used.
vInwparticular on smaller stages, the power delivered by these amps is enough
to match the volume produced by other sound sources on stage. Things are
dierent 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.
Tomaximize 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.
output
For unbalanced use, pin 1 and pin 3
have to be bridged
1 = ground/shield
2 = hot (+ve)
3 = cold (-ve)
input
12
3
1
2
3
Balanced use with XLR connectors
Fig. 5.1: XLR connector
6. Specications
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 (o 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