International enquiries:
Genelec, Olvitie 5
FIN-74100, Iisalmi, Finland
Phone +358 17 83 881
Fax +358 17 812 267
Email genelec@genelec.com
In the U.S. please contact
Genelec, Inc., 7 Tech Circle
Natick, MA 01760
Phone +1 508 652 0900
Fax +1 508 652 0909
Email genelec.usa@genelec.com
Genelec document D0043R001.
Copyright Genelec Oy 6.2002.
All data subject to change without prior notice.
6040A Active Speaker
Operating Manual
GENERAL DESCRIPTION
The bi-amplified GENELEC 6040A is a two way
floor-standing active speaker with high output,
low coloration, and broad bandwidth.
As an active speaker, the 6040A contains
drivers, power amplifiers, active crossover filters
and protection circuitry. The Directivity Control
Waveguide™ (DCW™) technology used provides
excellent frequency balance in difficult acoustic
environments.
INTEGRATED CONSTRUCTION
As the amplifiers are built into the speaker base,
the only connections required are the mains supply
and the line level input signal, making the 6040A
very easy to set up and use. The integrated design
allows the amplifiers and the drivers to be
calibrated as a single unit at the factory. This
eliminates the effects of component tolerances
and ensures consistent quality.
DRIVERS
The bass frequencies are reproduced by a 182
mm (7") bass driver. The –6 dB point lies at 43 Hz.
The high frequency driver is a 19 mm (3/4")
metal dome. Uniform dispersion control is achieved
with the revolutionary DCW™ Technology
pioneered by Genelec, which also results in perfect
phase and delay uniformity at the crossover
frequency.
Magnetic shielding is standard on the 6040A
to ensure minimal interference with TV screens
and computer displays.
CROSSOVER
The active crossover network consists of two
parallel bandpass filters. Acoustically, the filters
are complementary and the slopes are 24–32
dB/octave. The crossover frequency is 3.5 kHz.
The active crossover controls (“treble tilt”, “bass
tilt” and “bass roll-off”) allow the 6040A to be
exactly matched with the listening room acoustics.
Variable input sensitivity allows for accurate level
matching.
AMPLIFIERS
The integrated bass and treble amplifiers of the
6040A both produce 120 W of output power. The
amplifier unit incorporates special circuitry for
driver overload protection.
SPEAKER PLACEMENT
It is vital that the speakers are correctly positioned
in the room as this greatly affects their performance. To produce a true and accurate stereo image
the speakers must have identical frequency
responses. This is easy to achieve in an anechoic
measuring chamber, but in a normal room the
response of a speaker is always affected by the
way the sound reflects within the room, bouncing
back from walls, ceiling, floor, furniture and other
objects.
A good starting point is to place the speakers
symmetrically at the same distance from the front
and side walls. This minimises colourisation effects
caused by cancellation dips in the frequency
response and maintains accurate stereo imaging.
The distance from the front wall should be either
less than 1 meter, or alternatively more than 3
meters to avoid an uneven frequency response
due to reflections from the front wall.
If the speaker is placed close to the wall (<1 m)
this will boost the lower frequencies and the tone
controls should then be adjusted appropriately.
The speakers should be aimed toward the
listening position. This is due to the effect of the
DCW which increases the directivity. If the ratio
of direct sound to reflected sound is greater the
listener is then able to listen to more of the material
and less of the room effects. Subjectively this is
perceived as superior stereo imaging.
INSTALLATION
Each 6040A speaker is supplied with a mains
cable, a set of pads (attached) and spikes for the
speaker base and an operating manual. After
unpacking place the speaker in its required
listening position. Before connecting up, ensure
that the mains switch is off and the mains voltage
selector set to your local voltage. Audio input is
via a 10 kOhm balanced XLR connector or an
unbalanced RCA connector at the speaker base.
Do not use both input connectors at the same
time. Once the audio and mains connections
have been made, the speakers are ready to be
switched on.
REMOTE CONTROL AND AUTOSTART
The 6040A has a provision for remote ON/STANDBY
switching by remote control or automatic signal
sensing. Two pairs of connectors are provided at
the base of the speaker next to the signal input
connectors, pins 1 and 2 for a 12 V DC trigger
type remote control and pins 3 and 4 for an
external switch or relay type control. Do not
connect two remote controls at the same time.
The remote control function must be activated by
turning the “REMOTE CONTROL” dip switch on
the base panel to “ON”.
If a remote control is not used, the “autostart”
function provides automatic ON/STANDBY
switching by signal sensing. Switch the “AUTOSTART” dip switch to “ON” and “REMOTE
CONTROL” dip switch to “OFF” to activate the
function. The “Remote control” function overrides
“autostart” so it must be deactivated when using
“autostart”. “Autostart” switches the speaker to
“STANDBY” mode if an input signal has not been
detected for approximately twenty minutes, and
back to “ON” mode when the signal returns.
SETTING THE VOLUME CONTROL
The input sensitivity of the speakers can be
matched to the output of the preamplifier by
adjusting the sensitivity control on the speaker
base panel.
USING THE TONE CONTROLS
The response of the 6040A can be adjusted to
overcome acoustical problems in the listening
room. Excessive bass level often results if the
speakers are placed near a wall or into a corner.
Treble can be dull or too bright depending on the
acoustical damping characteristics of the room
etc. These effects can be corrected by adjusting
the tone controls on the speaker base panel. The
tone controls include three groups of switches:
“TREBLE TILT”, “BASS TILT” and “BASS ROLLOFF.” The factory settings for all these are “OFF”
to give a flat anechoic response. Use this as the
starting point when making adjustments and note
that only one switch within each group should be
switched to “ON” at a time. Figure 3 illustrates
their effect on the speaker’s response and Table
1 shows suggested settings for some typical
cases.
Adjusting the treble response
Switch on one of the “TREBLE TILT” switches:
“+2 dB” switch increases the treble level and
makes the sound “brighter”. If the treble level feels
too high, you can attenuate it by –2 dB or –4 dB
using the corresponding switches. “MUTE” mode
is mainly used for testing purposes.
Adjusting the bass response
“BASS TILT” and “BASS ROLL-OFF” controls can
be used to attenuate the speaker’s bass response
if the sound feels too bass heavy. See table 1.
MAINTENANCE
No user serviceable parts are to be found within
the speaker. Any maintenance or repair of the
6040A should only be undertaken by qualified
service personnel.
SAFETY CONSIDERATIONS
Although the 6040A has been designed in
accordance with international safety standards,
to ensure safe operation and to maintain the
instrument under safe operating conditions, the
following warnings and cautions should be
observed:
• Do not use this product with an unearthed mains
cable as this may compromise electrical safety.
• Do not expose the speaker to water or moisture.
Do not place any objects filled with liquid, such
as vases on the speaker or near it.
• This equipment is capable of producing sound
pressure levels in excess of 85 dB, which may
cause permanent hearing damage.
GUARANTEE
This product is guaranteed for a period of ONE
year against faults in materials or workmanship.
Refer to supplier for full sales and guarantee
terms.
Table 1.
Suggested
tone control
settings for
some typical
situations.
Speaker positioning Treble tilt Bass tilt Bass roll-off
Anechoic space OFF OFF OFF
Free standing in
a damped room OFF –2 dB OFF
Near a wall OFF –4 dB –2 dB
In a corner OFF –4 dB –4 dB
SYSTEM SPECIFICATIONS
Free field frequency 47 Hz – 20 kHz (± 2.5 dB)
response of system: –6 dB point at 43 Hz
Maximum short term
acoustic output
>100 Hz: >105 dB
Drivers:
Bass 182 mm (7") cone
Treble 19 mm (3/4") metal dome
Both drivers are
magnetically shielded
Weight: 15 kg (33 lb)
Dimensions:
Height 996 mm (391/4")
(without speaker base
spikes or pads)
Width Base: 250 mm (10")
Speaker: 237 mm (95/16")
Depth Base: 266 mm (101/2")
Speaker: 220 mm (83/4")
CROSSOVER SECTION
Inputs:
Input 1 XLR female,
balanced 10 kOhm
Input 2 RCA unbalanced
10 kOhm
Input level for 100 dB
SPL output at 1 m: –6 to +6 dBu
Crossover frequency,
Bass/Treble: 3.5 kHz
Treble tilt
control range: +2 to –4 dB and MUTE
in 2 dB steps
Bass roll-off
control range: 0 to –4 dB
in 2 dB steps
Bass tilt
control range: 0 to –6 dB and MUTE
in 2 dB steps
DESIGN
Harri Koskinen
AMPLIFIER SECTION
Short term bass
amplifier output
power with an
8 Ohm load: 120 W
Short term treble
amplifier output
power with an
8 Ohm load: 120 W
Long term output power is limited by
driver unit protection circuitry.
Amplifier system
distortion at nominal
output: THD: < 0.08%
SMPTE-IM: < 0.08%
CCIF-IM: < 0.08%
DIM 100 < 0.08%
Input impedance: 10 kOhm
Mains voltage: 115/230 V
Voltage operating range: ±10%
Power consumption: Standby 5 W
Idle 10 W
Full output 200 W
Figure 1.
Connectors and
controls on the
speaker base
side panel.
Figure 2.
Control switch
groups on the
speaker base
panel.
Figure 3.
The effect of the
tone controls on
the free field
response of the
6040A. The black
curve shows the
response with
all controls
switched off.
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