Genelec 4020BMM, Operating Manual

2

General

The bi-amplified Genelec 4020B is an extremely 
compact two way active loudspeaker designed for 
fixed installations. As an active loudspeaker, it con-
tains drivers, power amplifiers, active crossover fil-
ters and protection circuitry. The 4020B is designed 
for indoor use only, in temperatures between 15 to 
35 degrees Celsius and relative humidity between 
20 % and 90 %. 

The MDE™ (Minimum Diffraction Enclosure™) 

loudspeaker enclosure is made of die-cast alumin-
ium and shaped to reduce edge diffraction. Com-
bined with the advanced Directivity Control Wave-
guide

TM

 (DCW

TM

), this design provides excellent 

frequency balance in difficult acoustic environments.

Positioning the loudspeaker

Each 4020B is supplied with an integrated amplifier 
unit, mains cable, a 5-pin connector for audio signal 
and 12 V trigger voltage, a keyhole type wallmount 
and an operating manual. After unpacking, place the 
loudspeaker in its required listening position, taking 
note of the line of the acoustic axis. The axis should 
be pointed towards the center of the listening area. 

Connections

Before connecting up, ensure that the loudspeakers 
and the signal source have been switched off. The 
power switch of the 4020B is located on the back 

panel (see Figure 3). Connect the loudspeaker to an 
earthed mains connection with the supplied mains 
cable. Never connect the loudspeaker to an un-
earthed mains supply or using an unearthed mains 
cable. Audio input is via a 10 kOhm balanced con-
nector. The connector also has two pins for 12 V 
trigger voltage for power switching. The current fed 
into the 12 V trigger connection must not exceed 
200 mA. The pin sequence of the connector is 
shown in Figure 2.  

Connect the signal cable and 12 V trigger volt-

age to the 5-pole plug provided with the loud-
speaker and secure the connections by tightening 
the screws on each pole. Push the plug into the 
connector on the loudspeaker.

Never connect the 4020B to the loudspeaker 

outputs of a power amplifier or an integrated am-
plifier or receiver.

Once the connections have been made, the 

loudspeakers are ready to be switched on. 

Autostart And Remote Control

The 4020B is equipped with an Autostart function, 
which automatically turns the amplifier to Standby 
mode if an input signal has not been detected for 
approximately 1 hour. 

The amplifier mode can also be switched by a 

12 V DC trigger type remote control. The remote 

4020B 

Active Loudspeaker