Genelec 4020C Users Manual

4020C

Operating Manual

General

The bi-amplied Genelec 4020C is an extremely

compact two way active loudspeaker designed for

xed installations. As an active loudspeaker, it con-

tains drivers, power ampliers, active crossover l-

ters and protection circuitry. The 4020C is designed

for indoor use only, in temperatures between 15 to

35 degrees Celsius and relative humidity between

20 % and 90 %.

The MDE™ (Minimum Diraction Enclosure™)

loudspeaker enclosure is made of die-cast alumin-

ium and shaped to reduce edge diraction. Com-

bined with the advanced Directivity Control Wave-

guideTM (DCWTM), this design provides excellent fre-

quency balance in dicult acoustic environments.

Positioning the loudspeaker

Each 4020C is supplied with an integrated ampli-

er unit, mains cable, a 3-pin balanced Euroblock

connector for audio signal, a keyhole type wall-

mount and an operating manual. After unpacking,

place the loudspeaker in its required listening posi-

tion, 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 o. The

power switch of the 4020C 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

connector. The pin sequence of the connector is

shown in Figure 2.

4020C

Active Loudspeaker

Connect the signal cable to the 3-pole plug pro-

vided with the loudspeaker and secure the con-

nections by tightening the screws on each pole.

Push the plug into the connector on the loud-

speaker.

If you want to daisy-chain multiple loudspeak-

ers, simply connect a second signal cable to the

plug and use it to route the signal to the next loud-

speaker (see Figure 4).

Never connect the 4020C to the loudspeaker

outputs of a power amplier or an integrated am-

plier or receiver.

Once the connections have been made, the

loudspeakers are ready to be switched on.

ISSTM Autostart

The automatic power saving function ISS (Intelli-

gent Signal Sensing) can be activated by setting

the “ISS” switch on the back panel to “ON.” Auto-

matic powering down to standby mode happens

after a certain time when playback has ended. The

power consumption in standby mode is typically

less than 0.5 watts. Playback will automatically

resume once an input signal is detected from the

source.

There is a slight delay in the automatic pow-

ering up. If this is undesirable, the ISSTM function

can be disabled by setting the “ISS” switch on the

back panel to “OFF.” In this mode, the loudspeak-

er is powered on and o using the power switch

on the back panel.

GROUND

> 0,7 m

ACOUSTIC

146 mm

AXIS

Figure 1: Location of the acoustic axis

NON-

INVERTING

–

INVERTING

GND

Figure 2: Audio input pin sequence

REFLEX PORT

THREADS FOR CEILING AND

292-4020CT

WALL MOUNTS

TONE CONTROLS

POWER SWITCH

SENSITIVITY CONTROL

CONNECTOR PANEL (HORIZONTAL)

Figure 3: Control and connector

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SUGGESTEDTONECONTROL

SETTINGS

-6dBBASS

-6dBBASS FREESTANDINGINAROOM:

FREESTANDINGINAROOM:

TILT

ALLTONECONTROLSOFF

-4dBBASS

-4dBBASS TILT

TILT

MAINSINPUT

4020C

50/60Hz60W

ACTIVE

100- 240V~

SPEAKERSYSTEM

MADEINFINLAND

SERIALNUMBER

Thisdevicecomplies withFCCPart 15and Canadian ICES-003radiofrequency ClassBemissionrequirements. Refertooperatingmanualforfullinformation.

www.genelec.com

OFF

BASSROLLOFF -4dB

TREBLETILT+2 dB

292-8030W

ISS

-2dB

BASSTILT-4 dB

-6dB

SIGNAL INPUT

+ -GND

layout.

+ –

GND

Figure 4: Cable connection for daisy-chaining speakers

Level control

The input sensitivity of the loudspeaker can be

matched to the output of the signal source by ad-

justing the level control on the rear panel.

Setting the tone controls

The frequency response of the Genelec 4020C

can be adjusted to match the acoustic environ-

ment by setting the tone control switches on the

rear panel. The controls are “Treble Tilt”, “Bass

Tilt” and “Bass Roll-O”. An acoustic measuring

system such as WinMLS or comparable is recom-

mended for analyzing the eects of the adjust-

ments, however, careful listening with suitable

test recordings can also lead to good results if a

test system is not available. Table 1 shows some

examples of typical settings in various situations.

Figure 5 shows the eect of the controls on the

anechoic response.

Treble Tilt

The Treble Tilt control (switch 2) boosts the treble

response of the loudspeaker at frequencies above

4 kHz by +2 dB, which can be used for compensat-

ing for the high frequency loss occurring at long

listening distance, o-axis listening or when the

loudspeaker is placed behind a screen or decora-

tive cloth.

Bass Tilt

The Bass Tilt control oers three attenuation levels

for the bass response of the loudspeaker below

2 kHz, usually necessary when the loudspeakers

are placed near a wall or other room boundaries.

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