alp5

either may be used as an input or as a pass-through connection. Input specifications 

apply equally to both inputs.

Unbalanced RCA Line Input This jack accepts a male RCA connector, wired for 

unbalanced operation. This jack is hardwired in parallel with the balanced line inputs. 

However, due to it being an unbalanced input, we do not recommended using it in 

combination with either of the balanced inputs, as this will unbalance those inputs, 

possibly causing degradation of the audio signal.

Voltage Selector. The correct voltage will have already been set for your region 

so there is no reason to touch this selector. Only authorized Event technicians are 

permitted to change the voltage. Please note that any evidence of tampering with 

the voltage selector will invalidate the products warranty.

WARRANTY

VOID

IF REMOVED

BALANCED

INPUTS

-5dB

INPUT

SENSITIVITY

 -20dB     MAX

BALANCED

INPUTS

UNBALANCED

   INPUT

On/Standby

Input Sensitivity

Voltage Selector

Power Connector

Unbalanced RCA Line Input

Balanced XLR

Line Input

Balanced 1/4”  TRS Line Input
 

Tip - single (-)

Ring - single (+)

Sleeve - ground

Pin 3 (+)

Pin 2 (-)

Pin 1 (ground)

BEFORE OPENING 

PULL MAIN PLUG

VOR DEM OFFNEN 

NETZSTECKER ZIEHEN

POUR PREVENIR LES RISQUES D’INCENDE OU DE CHOC 

ELECTRIQUE, EVITER D’EXPOSER CET APPAREIL A LA

WARNING: TO REDUCE THE RISK OF FIRE OR 

ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE 

TO RAIN OR MOISTURE.

CAUTION

VORSICHT

AVERTISSEMENT

FUSE INSIDE INLET T4AL 250V

ALP5 BIAMPLIFIED DIRECT

F I E L D   M O N I TO R   S YS T E M

WWW.EVENT1.COM

■ 100V ~  50/60Hz  40VA

■ 120V ~  60Hz 

40VA

■ 220V ~  50Hz 

40VA

■ 240V ~  50/60Hz  40VA

Figure 2. Active Linear Phase rear panel connections and controls.

Input Sensitivity This control is used to compensate for different signal levels that 

appear at the input. The control has a 20dB range; when set at maximum (MAX), 

0.5V RMS input at the balanced in or 0.25V RMS at the unbalanced in will produce 

full amplifier output. Note that when the signal appearing at the input is too hot, the 

amplifiers may overload, causing distortion. If this occurs, attenuate (decrease) the 

Input Sensitivity by turning the control counter-clockwise.

Standby Switch Push to turn the amplifiers ON; push again to activate standby 

mode. When the amplifiers are ON, the green LED located on the front of the 

monitor will illuminate. Note: In standby mode the mains power is still on.

Power Connector This connector accepts the detachable AC line cord. Use the 

line cord supplied with your monitor, and make sure it is fully seated into the Power