Genelec 8020.LSE-5.1 Data Sheet

Data Sheet 8020B

8020B

Active Monitoring System

Applications

• Near Field Monitoring • Audio Video Post Production • Mobile Vans • Home Theaters

• Project / Home Studios • Digital Workstations • Multimedia Production and Playback

System

The Genelec 8020B is a very compact bi-

amplified active monitor system with perfor-

mance comparable to much larger systems.

The 8020B excels in applications where space

is at a premium, taking full advantage of the

unconventional design and advanced technol-

ogies of Genelec’s 8000 Series loudspeaker

range. The all-aluminium Minimum Diffraction

Enclosure™ (MDE™) and advanced Directiv-

ity Control Waveguide™ (DCW™) technolo-

gies are carefully matched with complementing

advanced amplifier and electronics circuitry

and the latest drivers. Bass response reaches

down to 65 Hz (-3 dB) with low distortion due

to a uniquely new rear reflex port design. The

system's excellent directivity characteristics

and accurate imaging together with its com-

pact size and flexible mounting options make

the 8020B the perfect monitoring tool for a

wide range of applications.

The 8020B has been specially designed

to have a sufficient LF extension for a variety

of situations. However if greater SPL's and a

lower cutoff frequency are required, it can be

complemented with Genelec 7050B subwoofer,

which has a lower cutoff point of 25 Hz.

Integrated construction

The 8020B is very easy to set up and use,

the only connections required are the mains

supply and the line level input. The input is

made via a balanced female XLR connector.

The volume control is located on the front

panel. This allows easy level matching with

other audio equipment.

The integrated design allows the amplifiers

and the drivers to be calibrated as a single

unit, eliminating the effects of component tol-

erances and ensuring consistent quality.

Crossover filters

The amplifier unit contains an active cross-

over, a feature more commonly used in large

and expensive control room monitors. This is

the ideal method for dividing the input signal

between the driver units. The active crossover

allows the overall response of the system to

be optimized to an extent impossible with a

passive system.

To maintain uniform frequency balance

in differing acoustic environments, special

calibrated controls are included in the active

crossover network. These controls include

“treble tilt”, “bass tilt” and “bass roll-off ”

switches.

Amplifiers

The bass and treble amplifiers produce

20 W of output power each, with very low

THD and IM distortion values. The amplifiers

are designed to ensure the highest subjec-

tive sound quality currently possible. The

amplifier unit also contains a protection cir-

cuit that monitors the output levels and pre-

vents any damage to the drivers. This makes

the system immune to overloads and spuri-

ous signals.

Drivers

A 19 mm (3/4") metal dome tweeter is loaded

by an advanced DCW™ waveguide. The

DCW™ is integrated into the one piece front

baffle.

The 105 mm (4") bass cone driver is

mounted in a newly designed bass reflex

enclosure. The long, flow optimized reflex

tube has a large cross sectional area and

terminates with a wide flare at the back of

the enclosure.

Protective grilles are positioned in front of

both drivers. Magnetic shielding is standard

on the 8020B. Shielding is vital for applica-

tions such as video post production, where

stray magnetic fields must be minimized.

Figure 1: The location of the acoustic axis of the 8020B.

Figure 2: Back panel layout of the 8020B.

MDE™ and DCW™
Technologies

The Minimum Dif fra cti on E ncl osu re™

(MDE™) Technology increases the perfor-

mance of the Genelec 8000 Series loud-

speakers by minimizing edge diffraction and

improving frequency and power response.

The edges of the enclosure are rounded and

blend seamlessly into the enlarged Directiv-

ity Control Waveguide™. Surface disconti-

nuities that cause diffraction are minimized.

The curved walls of the die-cast aluminium

enclosure are thin but rigid, allowing maxi-

mum internal volume while also providing

improved EMC shielding and heat dissipation

for the amplifiers. Locating the reflex port to

the back of the enclosure allows a generously

dimensioned reflex port for minimal port noise

and excellent bass articulation while freeing

the front baffle for an enlarged and optimized

DCW™.

The advanced DCW™ is designed to

match the performance of the drivers in

terms of both frequency response and

directivity. This results in a smoother overall

frequency response on and off axis. In addi-

tion, the improved directivity control causes

more direct sound and less reflected sound

to be received at the listening position, pro-

viding improved imaging and reducing the

effects of differing control room acoustics.

The DCW™ improves the drive unit sen-

sitivity by +2 to +6 dB (depending on the

particular application), thus also increasing

the available system maximum sound pres-

sure level.

Mounting

The 8020B offers several mounting options:

The vibration insulating Isolation Positioner/

Decoupler™ (Iso-Pod™) table stand allows

tilting the speaker for correct alignment of the

acoustic axis. The stand can be attached to

three mounting points allowing vertical and

symmetrical horizontal positioning. On the

base of the monitor is a 3/8” UNC threaded

hole which can accommodate a standard

microphone stand. On the rear there are

two M6x10 mm threaded holes for an Omni-

mount® size 20.5 bracket.

Colours

The 8020B cabinet has a durable painted

surface in Black, Silver or White.

Guarantee

The 8020B is guaranteed for a period of two

years against faults in materials or workman-

ship.

Figure 3: The curved reflex tube provides low
distortion and excellent bass extension.

Figure 4: The vibration isolating Iso-Pod
table stand has adjustable speaker tilt.

Data Sheet 8020B

Figure 5: The upper curve group shows the horizontal directivity char­acteristics of the 8020B measured at 1 m. The lower curve shows the
systems power response.

SYSTEM SPECIFICATIONS

8020B

Lower cut-off frequency, –3 dB

Upper cut-off frequency, –3 dB

Free field frequency response 66 Hz – 20 kHz (± 2.5 dB)

Maximum short ter m sine wave acoustic output on axi s in
half space, averaged from 100 Hz to 3 kHz

Maximum long term RMS acoustic output in same
conditions with IEC weighted noise (limited by driver unit
protection circuit

Maximum peak acoustic outpu t per pair with music
material

Self generated noise level in half spa ce at 1 m on axis
(A-weighted)

Harmonic distortion at 85 dB SPL at 1 m on axis

Freq: 50…100 Hz
> 100 Hz

Drivers

Bass
Treble

Weight 3.7 kg (8.1 lb)

Dimensions

Height including Iso-Pod™ table stand
Height without Iso-Pod™ table stand
Width
Depth

< 65 Hz

> 21 kHz

@ 1 m > 96 dB SPL

@ 1 m > 95 dB SPL

@ 1 m > 105 dB

< 10 dB

< 3 %
< 0.5 %

105 mm (4") cone
19 mm (3/4") metal dome
Both drivers are magnetically
shielded

1

/2”)

242 mm (9

1

/16”)

230 mm (9
151 mm (6”)

5

/8”)

142 mm (5

Figure 6: The curves above show the effect of the “bass tilt”, “treble tilt”
and “bass roll-off” controls on the free field response.

AMPLIFIER SECTION

8020B

Bass amplifier short term output power
Treble amplifier short term output power

Long term output power is limited by driver unit protect ion
circuitry

20 W at 8 Ohm load
20 W at 8 Ohm load

Amplifier system THD at nominal output < 0.08 %

Mains voltage

Voltage operating range:

Power consumption (average)

Idle
Full output

100, 120, 220 or 230 V
according to region
±10 %

5 VA
50 VA

CROSSOVER SECTION

8020B

Signal input connector
XLR female, balanced 10 kOhm pin 1 gnd, pin 2 +, pin 3 -

Input level for 100 dB SPL output at 1 m -6 dBu at volume

Sensitivity control range -80 dB relative to max output

Crossover frequency, Bass/Treble 3.0 kHz

Treble Tilt control operating range 0 to –2 dB @ 15 kHz

Bass Tilt control operating range in 2 dB steps From 0 to -6 dB @ 100 Hz

Bass Roll-Off control –6 dB step @ 85 Hz

The ‘CAL’ position is with all tone controls set to ‘off’ and the input sensitivity control to maximum
(fully clockwise).

control max

(to be used in conjunction with a
7050B subwoofer)

International enquiries:

Genelec, Olvitie 5

FI 741 00, Iisalm i

Finland

Phone [phone]

Fax [phone]

Email [e-mail]

Genelec Document BBA0088001 Copyright Genelec Oy 3.2009. All data subject to change without prior notice

In the USA please contact

Genelec, Inc., 7 Tech Circle

Natick, MA 01760

Phone [phone]

Fax [phone]

Email [e-mail]

In China please contact:

Beijing Genelec Audio Co. Ltd.

Jianwai SOHO, Tower 12, Room 2605

39 East 3rd Ring Road

Chaoyang District, Beijing 100022

Phone [phone]

Fax [phone]

In Sweden please contact

Genelec Sverige

Ellipsvägen 10B

P.O. Box 5521, S-141 05 Huddinge

Phone [phone]

Fax [phone]

Email [e-mail]

www.genelec.com