Crossover Filters - Genelec 8020A Datasheet

8020A Active Monitoring System
System
The Genelec 8020A is a very compact bi-
amplified active monitor system with perfor-
mance comparable to much larger systems.
The 8020A 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 8020A the perfect monitoring tool for a
wide range of applications.
The 8020A 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 8020A 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. A bal-
anced male XLR output connector can be
used for connecting a 7050B subwoofer or
daisy chaining up to six 8020A's together.
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 impos-
sible with a passive system. To maintain uni-
form 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
Applications
• Near Field Monitoring
• Audio Video Post Production
• Mobile Vans
• Home Theaters
• Project / Home Studios
• Digital Workstations
• Multimedia Production and
Playback
designed to ensure the highest subjective
sound quality currently possible. The ampli-
fier unit also contains a protection circuit that
monitors the output levels and prevents any
damage to the drivers. This makes the system
immune to overloads and spurious signals.
Drivers
A 19 mm ( / ") metal dome tweeter is loaded
3
4
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 8020A. Shielding is vital for applica-
tions such as video post production, where
stray magnetic fields must be minimized.
MDE™ and DCW™
Technologies
The Minimum Diffraction Enclosure™
(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