Operating Manual
LSE Series
Genelec 7060A, 7070A and 7071A
Active Subwoofers
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Figure 2. XLR to RCA connector for
unbalanced operation.
Figure 3. Recommended distances to
the front wall
Figure 1. 7070A's amplifier panel, connectors and controls.
Pro Logic) should not be connected to the
"LFE IN" input. See section "Subwoofer in
analogue matrix sound systems".
way as with the Front channels. Also these
offset from the center of the front wall.
The recommended distance to the wall is
less than 60 cm / 24" measured from the
subwoofer's driver (See Fig. 3). This position
gives increased acoustic loading (and SPL)
due to the proximity of the front wall and floor.
Cancellations from the front wall and floor are
also avoided. Front wall cancellation for the
85 Hz high pass filtered main speakers
can be eliminated by placing them at least
110 cm / 43" away from the front wall. In
a multichannel system the main monitors
should ideally be positioned symmetrically
and at an equal distance from the listening
position.
channels are high pass filtered at 85 Hz.
Once all connections have been made, the
subwoofer and main monitors are ready to be
powered up.
SUM OUT:Use this output connector when
you want to link another subwoofer to your
system. "SUM OUT" carries an unfiltered
sum of signals combined from all input chan-
nels. See section "Using multiple subwoof-
ers".
Positioning in the room
The placement of the subwoofer in the room
affects the overall frequency response and
sound level of the system dramatically, as at
low frequencies the effects of the room are
strong. Even a slight change in the subwoof-
er's location can make a marked difference
in the frequency balance and often patient
and methodical experimentation and testing
is needed to find the optimum placement.
The placement will affect the phase
difference between the main monitors and
the subwoofer, and also the bass roll-off rate.
These effects can be compensated by the
use of the controls in the amplifier unit;
but we recommend that at first you leave
the switches untouched and concentrate on
finding the position where the subwoofer
gives the smoothest response, and only then
use the controls to fine-tune the balance and
phase alignment between the subwoofer and
the main monitors.
Middle row
FRONT L, C, R CHANNELS IN/OUT: Use
these connectors for the Front Left, Center
and Right channels of a surround sound
system or the Left and Right channels of
a Stereo system. Connect line level signal
cables from your signal source to their respec-
tive "LEFT IN", "CENTER IN" and "RIGHT IN"
connectors. Then connect the subwoofer to
your main monitors with XLR cables from the
"LEFT OUT", "CENTER OUT" and "RIGHT
OUT" connectors. All "L, C and R OUT" chan-
nels are high pass filtered with the filtering
frquency fixed at 85 Hz (12 dB/octave).
If the frequency balance is not right, try
moving the subwoofer slightly to the left or
right so that different room modes are
excited at different levels. Positioning the
subwoofer close to a corner will boost the
bass level at lower frequencies and may
cause asymmetrical spatial imaging. If you
are using two subwoofers, try placing them
asymmetrically relative to the side walls.
Sometimes moving the subwoofers apart
into the front corners helps with problematic
rear wall reflections and the loss of mutual
coupling is compensated by the bass boost
caused by corner positioning.
Bottom row
REAR L, C, R CHANNELS IN/OUT: Use
these connectors for the Rear Left, Center
and Right channels of a surround sound
system. The connection is made in the same
To begin with, place the subwoofer slightly
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Phase Difference: 0°
Phase Difference: 90°
Table 1. Suggested Bass Roll-Off settings
85 Hz
85 Hz
Phase Difference: 180°
Phase Difference: 270°
85 Hz
85 Hz
Figure 5. Flush mounting the subwoofer.
Note the clearance needed on the reflex
port side.
Figure 4. The effect of phase difference between the subwoofer and the main monitors
Although the 7060A, 7070A and 7071A
subwoofers are magnetically shielded, they
may cause some picture distortion if placed
near very sensitive video monitors or com-
puter displays. Move the subwoofer further
away or try turning the driver side of the
subwoofer away from the screen.
fier cooling. This can be done by making the
panel. Table 1 provides some suggestions
for the "Bass Roll-Off" switch settings. When
both roll-off switches are set to "OFF", a flat
anechoic response is obtained.
recess 7,5 centimeters (3") wider than the
subwoofer. Place the subwoofer into the right
end of the recess with the driver side facing
the room. This leaves sufficient 7,5 centime-
ters (3") of free space on the reflex port side.
The height and depth of the recess should
not be any bigger than those needed to fit
the subwoofer flush with the wall surface.
Setting the phase control
Incorrect phase alignment between main
monitors and subwoofer causes a drop in the
frequency response of the whole system at
the crossover frequency. The graphs above
(Fig. 4) show the effect of phase difference to
the frequency response.
Minimum clearances to walls
or other objects
Setting the input sensitivity
The power amplifiers are attached to the
lower part of the aluminium grille, which func-
tions as a heatsink. Do not cover the grille or
place the subwoofer so that there is less than
10 centimeters (4") of free space in front of
the grille.
The subwoofer requires input sensitivity
alignment to the source to obtain a correctly
balanced system. The input sensitivity con-
trol is located on the amplifier panel of the
subwoofer. An input voltage of -6 dBu with a
-6 dBu input sensitivity setting will produce
100 dB SPL @ 1m in free field. To obtain a
110 dB SPL output an input voltage of +10
dBu is required when the input sensitivity is
set to 0 dBu.
The phase difference between the main
monitors and subwoofer at the listening posi-
tion is dependent upon the position of the
subwoofer, so the phase adjustment should
be done only after the preferred position
is found. Acoustic measuring equipment is
required for accurate system alignment. If
this equipment is not available, the following
coarse phase matching can be applied.
Make sure that the space underneath the
subwoofer is clear from obstructions. Thick
carpets may block the ventilation clearance
needed for cooling the electronics' box.
The reflex port side (opposite of the ampli-
fier panel side) should always have a clear-
ance of at least 7,5 centimeters (3") to any
objects to ensure proper functioning of the
reflex port.
Setting the Bass Roll-Off
switches
Coarse phase adjustment
method
The acoustic response of the subwoofer may
have to be matched to the characteristics of
the room and the positioning in which it will
be used. To adjust the subwoofer to match
these characteristics use the ''Bass Roll-Off'
control switches located on the amplifier
Genelec 7060A, 7070A and 7071A subwoof-
ers are equipped with a built-in 85 Hz fre-
quency test tone generator for easy phase
alignment. The test tone generator is con-
nected to the subwoofer's "FRONT CENTER
OUT" channel only. In a stereo system it is
Flush mounting the subwoofer
If the subwoofer is flush mounted into a wall
or a cabinet, it is important to ensure unre-
stricted airflow from the reflex port and ampli-
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consists of a LED in a compact case and
a RJ11 cable to connect the case and the
"REMOTE" RJ11 connector on the amplifier
panel.
Subwoofer bypass control
A bypass control feature is included in the
subwoofer circuits so that the effect of the
subwoofer on the whole monitor system can
be determined. With the bypass switch on,
the high pass filters for the main monitors are
overridden and the system behaves as if the
subwoofer was not connected. The bypass
function has no effect on the LFE input. Two
different bypass remote controllers are avail-
able as optional equipment: 1092-400 switch
that can be connected to a 1/4" jack connec-
tor on the amplifier panel and 7000-416 that
connects to the "REMOTE" RJ11 connector.
The 7000-416 option also includes remote
control of the "LFE +10 dB" function and a
link for the 7000-415 remote LED option.
Table 2. Recommended subwoofer/main monitor combinations.
Subwoofer in analogue matrix
surround sound systems.
necessary to temporarily connect either of
the channels to this output.
noise generator. Connect a high grade meas-
uring microphone to the analyser and feed
pink noise into the "CENTER IN" input of
the subwoofer. The subwoofer's bass man-
agement system will direct the frequencies
above 85 Hz to the center main monitor while
the subwoofer reproduces the frequencies
below 85 Hz.
Power up the system and set the DIP
switches 3 (SUM IN MODE) and 4 (LFE +10
dB) on the first switch group to "ON" Now you
should hear an 85 Hz test signal from the
subwoofer and the main monitor connected
to the center channel output.
When using Genelec 7060A, 7070A or 7171A
subwoofers in a consumer analogue matrix
surround sound system, such as Dolby Sur-
round, Dolby Pro-Logic or Pro-Logic II or a
professional matrix decoder such as a Dolby
SDU-4, route the front channels through the
subwoofer so that the output of the sub-
woofer is matched to the rest of the system
and select "Large" setting for the front speak-
ers on the decoder. If there is a subwoofer
channel output on the decoder it should NOT
be connected to the subwoofer's "LFE IN"
input since the processing within an ana-
logue decoder will conflict with the filtering in
the subwoofer. Connecting the rear channels
to the subwoofer is optional since the rear
channels from most matrix decoders are
band limited down to 100 Hz.
Position the microphone at the listening
position and adjust the input sensitivity of
the subwoofer until frequencies below and
above 85 Hz are reproduced at equal level.
Then adjust the phase control switches for
the maximum dip of at least -6 dB at the
crossover frequency (85 Hz).
Toggle the -180° phase switch
(DIP 4 on the second switch
group) on and off, and set
it to the position which gives
the lowest sound level at the
listening position.
Change the -180° switch to the opposite
setting. The phase should now be set
correctly and the frequency analyser should
show a smooth response around 85 Hz.
Next toggle the -90° phase
switch (DIP 3) on and off, and
again set it to the position which
gives the lowest sound level.
Overload indicators
Monitoring the LFE channel
in digital discrete surround
sound systems
Some digital surround sound systems use
a discrete Low Frequency Effects channel
which should be connected to the "LFE IN"
input on the amplifier panel. This enables the
subwoofer to correctly reproduce all the bass
information in the mix.
Finally, set the -180° phase switch
(DIP 4) to the opposite setting
and deactivate the test signal.
The mode indicator LED on the amplifier
panel will turn from green to yellow to indi-
cate clipping and then to red to indicate that
the protection circuit has activated. If this
occurs frequently, reduce the input level to
the subwoofer until the LED remains green.
If the LED on the amplifier panel is not
easily visible, the optional Remote LED Kit
can be used to bring it into view. The kit
Phase correction method with
test equipment
The following procedure matches the phase
between the subwoofer and the main moni-
tors using a frequency analyser and a pink
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Using the LFE +10 dB function
The LFE channel on the 7060A, 7070A
and 7071A can be set to two frequency
ranges: 19 to 85 Hz or 19 to 120 Hz by
using the "LFE BANDWIDTH" switch. If the
LFE signal includes higher frequencies than
120 Hz, they can be monitored by using the
"Redirect" function: Set "LFE BANDWIDTH"
switch to "85" and the "REDIRECT" switch
to "ON". Now the subwoofer reproduces
LFE frequencies up to 85 Hz and reroutes
all higher LFE content to the front center
channel. This is the most flexible setting
for LFE signal management, as it ensures
that all LFE content can be monitored in all
situations and encoding formats. Note that
the "Redirect" function is not enabled when
the "LFE BANDWIDTH" switch is set to 120
Hz.
subwoofers 12 dB compared to a single
subwoofer. Adjust the sensitivity control of all
subwoofers in the group to match the SPL
level of the main monitor system.
In Dolby Digital and DTS encoding formats
the LFE channel has to be monitored with
+10 dB gain in relation to the main channels.
The object is to increase the recording head-
room of the LFE channel. Consumer and the-
atrical decoders automatically add +10 dB of
LFE gain to restore the level balance.
Phase and Bass Roll-Off adjustments
should be done individually for each
subwoofer in the chain, especially if they
are not placed close together. To check the
phase alignment for the "master" subwoofer
switch off the "slave" subwoofer and follow the
instructions given in the previous sections.
To adjust the phase alignment of the
"slave" subwoofer, you need to switch off
the "master" subwoofer, connect a signal
cable from the "slave" subwoofer's "FRONT
CENTER OUT" connector to the center
channel monitor and switch the "SUM IN
MODE" switch to "OFF". This effectively
changes the "slave" to "master" mode and the
phase adjustment can be carried out. Return
the connections and "SUM IN MODE" setting
on the "slave" subwoofer back to the "SUM
IN" mode after completing the adjustment.
The "LFE +10 dB" function on the 7060A,
7070A and 7071A subwoofers is designed to
add the +10 dB gain to the LFE channel in
the production stage, if it is not already done
in the output matrix of the mixing console.
The function is activated by switching the
"LFE +10 dB" dip switch on the subwoofer's
first switch group to "ON" or by using the
remote control. A yellow LED indicates that
the function has been activated.
The "LFE +10 dB" function should not be
used in following cases:
Typical applications of different
LFE bandwidth settings
As stated above, using the 85 Hz LFE band-
width setting with "Redirect" function is the
most universal configuration for LFE moni-
toring. However, there are situations when
the band-limited LFE settings serve a definite
purpose.
• If the +10 dB LFE gain is already
implemented by another device.
• When producing an audio format that
does not require the use of +10 dB
gain on the LFE channel, such as
DVD-Audio (MLP), SACD (DSD) etc.
• When monitoring a decoded Dolby
Digital or DTS soundtrack. The decoder
will automatically provide +10 dB
LFE gain.
Safety considerations
The LSE series subwoofers have been
designed in accordance with international
safety standards. However, to ensure safe
operation and maintain the unit in safe oper-
ating condition, the following warnings and
cautions must be observed:
Limiting the LFE bandwidth to 85 Hz with-
out using the "Redirect" function can be
used to simulate the effect of some con-
sumer decoders that do not replay informa-
tion above 80 Hz on the LFE channel when
the bass management is used. Checking the
multichannel mix with this setting on lets you
know how it translates in systems with this
limitation.
Using multiple subwoofers
• Do not expose the subwoofer to water
or moisture. Do not place any objects
filled with liquid, such as vases on
the subwoofer or near it.
Genelec 7060A, 7070A and 7071A subwoof-
ers are equipped with a "SUM OUT" connec-
tor to provide an easy way of coupling two or
more subwoofers together in high SPL appli-
cations. Table 2 shows the recommended
configurations with different Genelec moni-
tors. Connect an XLR cable from the "SUM
OUT" connector of the "master" subwoofer
to which the main monitor channels are con-
nected, to the "LFE IN / SUM IN" connector
of the other, "slave" subwoofer and turn the
"SUM IN MODE" dip switch on the "slave"
subwoofer to "ON".
The 120 Hz LFE bandwidth setting com-
plies with the replay systems of movie theat-
ers and cinemas. 35 mm movie soundtracks
use the LFE channel to reproduce a band-
width of 20 - 120 Hz through dedicated sub-
woofers. In this case the LFE and main chan-
nel bandwidths overlap between 85 and 120
Hz, which may create unwanted acoustical
summing if the same signal is present in
both channels. To avoid this, the LFE con-
tent should be kept completely different (de-
correlated) from the low frequency content of
the main channels when mixing music and
sound effects for film release.
• Servicing and adjustment must only
be performed by qualified
service personnel.
• Opening the amplifier panel is
strictly prohibited except by
qualified service personnel.
• Always use a mains power connection
with protective earth. Failing to do
this may lead to personal injury.
When two subwoofers connected in this
way are positioned close to one another, bass
level increases by 6 dB. Three subwoofers
give an SPL increase of 9,5 dB and four
Warning!
This equipment is capable of delivering sound
pressure levels in excess of 85 dB, which
may cause permanent hearing damage.
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Maintenance
No user serviceable parts are inside the
amplifier unit. Any maintenance of the unit
must only be performed by qualified service
personnel.
Guarantee
This product is supplied with a ONE year
guarantee against manufacturing faults or
defects that might affect the performance of
the unit. Refer to supplier for full sales and
guarantee terms.
Accessories
1092-400 1/4” jack "Bypass" switch
7000-415 RJ11 remote Power/Overload
indicator LED
Figure 9. The free field frequency response
of the 7060A subwoofer at different Bass
Roll-Off settings
Figure 10. The free field frequency
response of 7070A and 7071A subwoofers
at different Bass Roll-Off settings.
7000-416 RJ11 remote control for
"Bypass" and "+10 dB LFE"
functions
Figure 6. 1092-400 "Bypass" switch
Figure 11. The curves above show the
harmonic distortion analysis of the 7060A in
free field. In half space the SPL will be 6 dB
higher.
Figure 12. The curves above show the
harmonic distortion analysis of the 7070A
and 7071A in free field. In half space the SPL
will be 6 dB higher.
Figure 7. 7000-415 Remote Power/OVL LED
Figure 8. 7000-416 Remote control switch
for "Bypass" and "+10 dB LFE" functions
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7060A, 7070A and 7071A Operating Manual
SYSTEM SPECIFICATIONS
AMPLIFIER SECTION
7060A
7070A
7071A
7060A
7070A
7071A
Free field frequency response
(+/- 3 dB)
29 Hz…85 Hz
LFE 85/120 Hz
19 Hz…85 Hz
LFE 85/120 Hz
19 Hz…85 Hz
LFE 85/120 Hz
Short term amplifier output
power (Long term output power
is limited by driver unit
Maximum short term sine wave
SPL output averaged from
30 to 85 Hz, measured in
half space at 1 meter
protection circuitry)
120 W
250 W
500 W
Amplifier system distortion
at nominal output
THD
≥ 108 dB SPL
≥ 113 dB SPL
≤ 15 dB
≥ 112 dB SPL
≥ 117 dB SPL
≥ 118 dB SPL
≥ 123 dB SPL
≤ 0.05%
Maximum peak SPL output with
random pink noise, measured
in half space at 1 meter
Mains voltage
230 V, 115/230V or 100/200V
according to region
Self generated noise level in
free field @ 1 m on axis
(A-weighted)
Power consumption (average)
Idle
Full output
15VA
150 VA
15 VA
250 VA
30 VA
500 VA
Harmonic distortion
at @ 1 m on axis in half space
@ 95 dB SPL
30 … 85 Hz
≤ 2 %
@ 95 dB SPL
30 … 85 Hz
≤ 2 %
@ 100 dB SPL
30 … 85 Hz
≤ 2 %
2nd
3rd
≤ 2 %
≤ 2 %
≤ 2 %
Driver, magnetically shielded
Weight
250 mm (10”)
305 mm (12”)
2 x 305 mm (12”)
INPUT SECTION
26 kg (57 lbs)
50 kg (110 lbs)
81 kg (178 lbs)
Dimensions
Height
7060A
7070A
7071A
527 mm (20 3/4”)
462 mm (18 3/16”)
360 mm (14 3/16”)
625 mm (24 5/8”)
555 mm (21 7/8”)
490 mm (19 5/16”)
755 mm (29 3/4”)
803 mm (31 5/8”)
490 mm (19 5/16”)
Width
Depth
Input connector XLR female
pin 1
pin 2
pin 3
gnd
+
–
Input impedance
10 kOhm balanced
Input level for 100 dB SPL
output @ 1 m
Variable from +12 to –6 dBu
CROSSOVER SECTION
7060A
7070A
7071A
Subsonic filter
(18 dB/octave) below
29 Hz
85 Hz
19 Hz
19 Hz
OUTPUT SECTION
Crossover frequency,
(sub/main channels)
7060A
7070A
7071A
LFE cutoff Hz
85 Hz/120 Hz selectable
Output connector XLR male
pin 1
pin 2
pin 3
gnd
+
–
Crossover slopes
Lowpass
36 dB/octave
12 dB/octave
Highpass
Remote LED connector (RJ11)
Main monitor Out gain
Sum Out gain
Remote LED for Power/Overload+Bypass
Midband rejection >400 Hz
≥ 50 dB
0 dB
0 dB
Bass Roll-Off control operating
range in 2 dB steps
From 0 to –6 dB
@ 30 Hz
From 0 to –6 dB
@ 20 Hz
From 0 to –6 dB
@ 20 Hz
Phase matching control
in 90° steps
From 0 to 270
@ 85 Hz
CONTROLS
7060A
7070A
7071A
Input sensitivity
Bypass
+12 to –6 dBu for 100dB @ 1 m
Bypasses the bass management for the main channels
LFE bandwidth
LFE sensitivity
Redirect
85 / 120 Hz
0 / +10 dB
Redirects LFE channel signal above 85 Hz to center channel
Changes subwoofer to Sum in mode
Sum in
Test tone for phase adjustment
Bass Roll-Off
85 Hz
0/-2 dB/ -4 dB/ -6 dB 0/-2 dB/ -4 dB/ -6 dB 0/-2 dB/ -4 dB/ -6
@ 30 Hz
@ 20 Hz
dB @ 20 Hz
Phase
0/90/180/270° @ 85 Hz
Genelec Document D0032R001. Copyright Genelec Oy 5.2002. All data subject to change without prior notice
International enquiries:
Genelec, Olvitie 5
In the U.S. please contact
Genelec, Inc., 7 Tech Circle
FIN-74100, Iisalmi, Finland
Phone +358 17 83 881
Fax +358 17 812 267
Natick, MA 01760
Phone +1 508 652 0900
Fax +1 508 652 0909
Email [email protected]
Email [email protected]
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