Genelec 7380A Service Manual

7300 Series

Operating Manual
Genelec 7380A

Smart Active Subwoofer

Genelec 7380A Smart Active Subwoofer

Introduction

Thank you for choosing a Genelec product!

Fullling our customers' dreams by oering

people the most truthful sound reproduction
possible has been the source of our
enthusiasm since 1978. There´s already over
one million Genelec monitors around the
world - welcome to our story!

All Genelec monitors are designed, hand
assembled and individually tested at our
factory in Iisalmi, Finland. Our products are
designed to last for decades and we take
care that our customers receive excellent
support and technical services throughout
the lifetime of the products.

Please register your monitor at http://
www.community.genelec.com/. You will
receive an extended 5 year warranty for
spare parts. More information about our
service and technical support: http://www.
genelec.com/customer-service.

System Description

The Genelec 7380A SAM subwoofer
integrates easily into environments based on
analog or digital interfacing. The 7380A even
introduces outstanding GLM™ features to the
lower octaves of monitoring systems based

on main speakers from a dierent vendor.

The 7380A is designed for precise monitoring
of multichannel analog audio signals and
stereo AES/EBU signals. Multichannel AES/
EBU signals can be monitored by using the
9301A multichannel digital audio interface
device connected to the subwoofer.

The subwoofer can be fully set up
using the controls built into the unit. The
7380A can also be precisely calibrated to
the monitoring room acoustics using the
Genelec Loudspeaker Manager (GLM)
computer software. The GLM software
runs on Mac OS and Windows computers
and enables detailed acoustic calibration
permanently inside the subwoofer. It is
also possible to use the GLM software as
a monitoring management system for more
than 30 SAM monitors and subwoofers.

In its power save mode, the 7380A
consumes less than 2 W of power. Energy
saving Intelligent Signal Sensing (ISS) can
automatically put the subwoofer into a
power save mode when audio has been
absent for a selected time. Upon sensing an
input signal, the subwoofer wakes up to full
operation. The time before entering the ISS

power save mode can be congured using

the GLM software. When the ISS is active
you can have your monitoring system ready
for action at all times.

Package content

Each subwoofer is supplied with a mains
cable, one 5 m GLM network cable and an
operating manual.

Genelec Loudspeaker

Manager™ (GLM™) Software

And GLM User Kit

The GLM software gets the most out of

7380A and tailor-ts it to your room. GLM

is available for download free of charge at
www.genelec.com/glm. Check in from time
to time to take advantage of new features,
or consider using the cloud-based version.

A GLM User Kit comprising the necessary
hardware, including the GLM Adapter and
measuring microphone is needed for building
and operating the GLM network. This kit can

be purchased at certied Genelec dealers.

Connections

Before connecting signal cables, switch the

subwoofer and monitors o.

Analog inputs 1 to 7

The 7380A SAM subwoofer accepts
balanced XLR inputs. These are the outputs
typically provided in a console or a monitor
controller. The maximum balanced audio
signal level is +24 dBu.

LFE In

A dedicated XLR input is provided for the
analog LFE signal. The bandwidth for a signal
fed to the LFE input is 120 Hz. The LFE input
sensitivity can be set the same as for the
main channels or at +10 dB relative to the
main channels. This feature is set using the
+10 dB DIP Switch or in the GLM software.

AES/EBU input

One AES/EBU digital audio XLR input is
available on the 7380A subwoofer. This can
take a stereo digital audio signal.

Multichannel digital audio monitoring is
possible with the 9301A interface device.
The 9301A connects to the digital audio input
in the 7380A subwoofer and expands the
number of digital audio inputs to four XLR
digital audio inputs. This supports a 7.1 audio
system, including an LFE channel.

Analog Output 1 to 7

Analog balanced XLR connectors connect
the subwoofer to monitors.

The 7380A SAM subwoofer supports two
bass management methods. Depending on
the chosen bass management method, these

analog outputs carry either unltered copy of

the inputs (SAM distributed crossover) or a

high-pass ltered signal (xed crossover).

The xed crossover is set to 85 Hz. The

SAM distributed crossover method allows
the subwoofer crossover to be adjusted in
the GLM software from 50 Hz to 100 Hz.

See chapter "Bass Management" for
details.

LFE Out

The analog LFE Out is a copy of the signal
at the analog LFE In. Typically, the LFE Out
is used in connecting to the LFE In of the
next subwoofer when multiple subwoofers
are used together.

Link Out

The sum of the analog inputs 1 to 7 is
available at the analog Link Out. The Link Out
is used in connecting to the next subwoofer
when subwoofers are used together while
using analog signals. See chapter "Using
Multiple Subwoofers."

Link In

The analog Link In accepts the signal from
the analog Link Out. The Link In input is used
when multiple subwoofers are used together
while using analog signals. When the Link In
is connected, the analog inputs 1 to 7 should
not be connected.

See chapter "Using Multiple Subwoofers."

OUT1 / Test 1

The analog OUT1 / Test 1 output XLR passes
a test tone for aligning the phase of the
subwoofer with a monitor.

This test tone has a frequency of 85 Hz
when the 7380A SAM subwoofer is set up
using the controls built into the subwoofer.
The test tone is enabled with the DIP Switch
labeled Test Tone. For more details on the
use of this output, see the section ‘Manual
Phase Alignment Method’.

OUT2 / Test 2

This analog output XLR is reserved for future
use.

IN/OUT

SWITCH

BYPASS
SWITCH

CONNECTOR

MAINS

INPUT

CONTROL

SWITCHES

ROTARY

LEVEL

ADJUSTMENT

Figure 1. Connector panel of the 7380A.

AES/EBU Out

The AES/EBU Out is a bit-to-bit copy of
the digital audio signal on the AES/EBU IN.
This output can be used for digital sharing
of the audio between subwoofers in the
case where multiple subwoofers are used.
This output can also be used for distributing
a stereo digital audio signal to monitors.
This can create a 2.1 digital audio stereo
monitoring system.

Bypass

The Bypass input accepts a 6.3 mm tip-ring­sleeve (TRS) or tip-sleeve (TS) plug. This
plug supports a contact open/close switch
device. Connecting the TIP to the SLEEVE
activates the bass management bypass.
When the bass management bypass is
active, the subwoofer only reproduces the
LFE signal and the outputs bypassed to the
monitors are exact copies of the inputs.

The Bypass switch is intended to be used
when the subwoofer is set up using the
controls built in the subwoofer.

The GLM software control enables also

bypassing the bass management and oers

a wider set of controls and adjustments.
When the GLM is used, the TRS bypass
control is not needed.

7380ASMARTACTIVE SUBWOOFER

THISDEVICE COMPLIES

MAINSINPUT

WITHFCCPART15AND
CANADIANICES-003RADIO

50/60Hz600W

FREQUENCYCLASSBEMISSION

100- 240V~

REQUIREMENTS.REFERTO
OPERATINGMANUALFORFULL
INFORMATION.

WARNING

ELECTRICSHOCK HAZARD.DONOTOPEN.DONOT
SUBJECTTO WATERORMOISTURE. NOUSER
SERVICEABLEPARTSINSIDE.REFERSERVICINGTO
QUALIFIEDPERSONNEL.USE EARTHEDMAINS
CONNECTIONONLY.

AVERTISSEMENT

RISQUEDE CHOCÉLECTRIQUE.NEPASOUVRIR. NEPAS
EXPOSERÀL'EAUOUL'HUMIDITÉ. AUCUNCOMPOSANTÀ
L'INTÉRIEURREMPLAÇABLEPARL'UTILISATEUR.ADRESSER
TOUTERÉPARATIONÀUNPERSONNELQUALIFIÉ.
CETAPPAREILDOITÊTRERACCORDÉÀLATERRE.

LAITEONLIITETTÄVÄSUOJAKOSKETTIMILLA
VARUSTETTUUNPISTORASIAAN.
APPARATETMÅTILKOPLES JORDETSTIKKONTAKT.
APPARATENSKALLANSLUTAS TILLJORDATUTTAG.

BASSROLL-OFF

PHASE
DIGITALLFE
LFECHANNEL
LFE+10 dB

LEVEL
TESTTONE
ISS
STORED

INPUTdBu
PRODUCING
100dB SPL(1 m)

RESETTO
FACTORY
SETTINGS:
PUSHBUTTON
FOR10SEC

MADEIN FINLANDwww.genelec.com

BYPASS

ANALOGANALOGANALOG

-4dB

-8dB

-90°

-180°

ON/OFF

A/B

-10dB

-20dB

ONOFF

-2

-4

-6

0

+2

+12

+4

+8

IN 6

IN 3

IN 1IN2

IN 7

OUT 6OUT 7

IN 4

OUT 3OUT 4

OUT1
TEST 1

TEST 2

OUT2

LFEIN

OUT

IN 5

LFE OUT

OUT 5

IN

DIGITAL

POWER

COMPUTER
RUNNING
GLMSOFTWARE

GLM ADAPTER

USB CABLE

SUBWOOFER

MONITORS

Figure 2. GLM Network cabling. Audio cabling not shown.

LINKIN

LINK OUT

GLM NETWORK

GLM

TERMINATOR

SERIAL

NUMBER

MICROPHONE

PLACED IN

THE LISTENING

POSITION

292-0063

GLM NETWORK
CABLE

ANALOG IN/OUT
CONNECTORS

AES/EBU
CONNECTORS

GLM NETWORK
CONNECTORS

GLM Management Network

All controls and calibration features included
in the 7380A SAM subwoofer can be set using
the Genelec Loudspeaker Manager (GLM)
software. Two GLM Network connectors are
provided on the subwoofer for computer
control. These connectors accept CAT5 or
higher cable (RJ45 connector). Standard CAT
cables can be used.

The GLM management network runs a
proprietary protocol. This is not an Ethernet
connection, do not connect to an Ethernet
network.

Mains Power Input

The main power connection supports a
wide mains voltage range (100-240 VAC,
50-60 Hz). This enables the 7380A SAM
subwoofer to be plugged in anywhere
globally. When the mains power is provided
with a generator, inverter, or certain lower-

quality UPS devices, we recommend ltering

power to remove harmonics and ensuring
the voltage supply is stable.

Bass Management

Bass management divides the input audio
signal into low frequency and high frequency
content at the subwoofer crossover frequency.
The signal content below the crossover
frequency is reproduced by the subwoofer.
The signal content above the crossover
frequency is reproduced by the monitors.

The 7380A supports two bass
management methods: the centralized bass
management method and the distributed
bass management method.

Centralized bass management

The centralized bass management method
uses fixed 85 Hz crossover filters in the
analog output channels in the 7380A SAM
subwoofer for the signal feeds going to

monitors. All analog signal cables are rst

routed to the subwoofer's IN connectors

and then from the OUT connectors to the
respective main monitors. The outgoing
signal has the low frequencies removed.

The fixed highpass filters inside the
subwoofer can be used when using the in-built
controls or with GLM software-based control.
However, we recommend the much more

exible distributed bass management method.

Distributed bass management

In the distributed bass management method
the monitors and the subwoofer receive

full banwidth audio signal and the ltering

is done separately inside each monitor
and subwoofer. The lowpass and highpass
filters are set in synchrony by the GLM
management network. This method is only
available in systems where GLM computer
management is used and with monitors
supporting this method. The subwoofer
crossover frequency can be adjusted from
50 Hz to 100 Hz.

The distributed bass management
supports three different signal cabling

congurations:

• All channels are routed through the

subwoofer's IN/OUT connectors to the

respective monitors.

• Y-cables split each signal to the

subwoofer's IN connector and the

monitor's input.

• Signal sources with dual outputs for each

channel, one going to the subwoofer, the

other going to the monitor.

Use With GLM Control

Network

The 7380A SAM subwoofer is fully
compatible with Genelec Loudspeaker
Manager GLM software, the proprietary
Genelec monitor management network, and
all Genelec SAM monitors.

Managing the 7380A SAM subwoofer
using GLM software control unleashes
the full power of room compensation in
the 7380A SAM subwoofer, enabling 20

parametric room compensation lters. This

powerful room compensation functionality
is only available when the GLM is used.
Detailed information on the use with the
GLM network is presented in the GLM
System Operating Manual.

System setup

The 7380A SAM subwoofer reaches its full
potential when set up and calibrated using
the GLM software. Genelec Loudspeaker
Manager GLM and the proprietary Genelec

monitor management network oer

• automated acoustic equalization

individually for every monitor and
subwoofer

• automated level alignment

• distance (acoustic time-of-ight)

calibration

• aligning of the subwoofers for bass
management

for any reproduction system from stereo

to complex 3D immersive setups, including
one or more subwoofers. GLM setup is fast
and accurate. It can precisely address the
typical narrow-band low frequency modal
resonances and radiation loads of a room
and offers precise frequency response
compensations. The settings can be
controlled with a computer or the settings
can be permanently stored in the monitors
and subwoofers, to make the setup available
at all times even when the computer is not in
use. Genelec recommends setting up SAM
monitoring systems using the GLM. You

can nd a detailed description of the setup

process and the use of GLM in the GLM
System Operating Manual.

The setup using GLM is fast and consists of
the following steps:

• Connect a CAT5 (RJ45) cable between

each monitor (and subwoofer) and nally

to the control network input of the GLM
Adapter device (see Figure 1).

• Connect the GLM Adapter device to
computer USB connector.

• Using a microphone stand, place the
Genelec measurement microphone at the
listening location with the microphone
pointing upwards and the microphone
top at the height of the engineer’s ear.
The microphone is a part of the GLM
User Kit.

• Connect the GLM Adapter device to the
computer USB port using cable included
in the GLM User Kit.

• Download the GLM software at the
Genelec web site (www.genelec.com).

• Install the GLM software and follow the
instructions in the software to measure
and set up your system.

• If you plan to not use a computer for
controlling the subwoofer, use the GLM

software to write the setting into the
subwoofer (use menu item “Store | Store
the Current Group Settings…”).

After storing the acoustic settings using
the GLM software, when the GLM network is
disconnected, the settings are retrieved and
activated by setting the STORED switch to
the ON position.

With GLM software active and controlling
the 7380A SAM subwoofer, the use of analog
and digital inputs is controlled by the GLM
software entirely. In the software ‘Input Type’

in the ‘Group’ denition sets this. The GLM

software allows you to select and switch
between the analog and digital audio inputs.

When using the in-built settings (stand­alone manual mode), an AES/EBU digital
audio signal will override analog signal.
This means, if a valid digital audio clock is
detected, the digital audio is selected over
the analog audio.

When the GLM acoustic settings have
been stored in the 7380A SAM subwoofer
and are active, the input is selected by the
‘Group’ settings in the GLM software when
the settings are stored.

Setup Without GLM

Cabling

This subwoofer oers a xed 85 Hz analog

crossover filter. The fixed crossover filter
is pre-selected when the subwoofer is
delivered from the factory. All analog outputs

on the subwoofer are highpass ltered in this

mode of operation.

When using this method, run each signal
cable first to the subwoofer. Then, run a
cable from the respective output to a monitor.
When using the LFE signal, run the LFE
signal to the subwoofer LFE in connector.
No computer access to the subwoofer is
needed to use this crossover mode.

Stand-Alone Controls

Please note that there is a slight delay before

the controls listed below take eect. This is

normal.

The BASS ROLL-OFF controls
compensate for the very low frequency boost
caused by the boundary loading, reducing
the 20 Hz level in 4 dB steps. Individual
controls add together, applying both controls
adds to a total of 12 dB attenuation. Setting
both switches to the "OFF" position obtains

a at response.

The PHASE switches adjust the subwoofer
phase. This enables the subwoofer to be
put in phase with a selected main monitor.

Phase Difference: 0°

85 Hz

Phase Difference: 180°

Phase Difference: 90°

85 Hz

5

2

3

1

3

Phase Difference: 270°

85 Hz

Figure 3. The eect of phase dierence between the subwoofer and the main monitors

Incorrect phase alignment can cause a drop
in the audio level at the crossover frequency.
Correct phase alignment eliminates this
level dip. See chapter "Setting the Phase
Switches."

The DIGITAL LFE switch selects the low
pass frequency for the LFE signal (see "LFE
CHANNEL" below). The possible frequencies
are 85 Hz for "OFF" position and 120 Hz for
"ON" position.

The LFE CHANNEL A/B selects which
subframe is carrying the LFE signal. The
position "ON" selects subframe A as the
LFE signal route, position "OFF" selects
subframe B. If subframe A is selected for
LFE, subframe B is assumed to carry the
main channel audio and vice versa.

The LFE +10 dB function increases the
LFE channel level by +10 dB. See chapter
"Using the LFE +10 dB function."

The LEVEL switches scale down the
subwoofer output level. The switch settings
are additive and they combine with the rotary
level adjustment control.

The TEST TONE switch turns on the
85 Hz test tone. This tone is intended for
manually calibrating the subwoofer phase.
See chapter "Manual Phase Adjustment
Method"

The ISS switch activates the signal
sensing automatic energy saving function.
This function puts the subwoofer in very low
power consumption state when there is no
input signal for a period of time.

The STORED switch selects the room
acoustic compensation settings stored
inside the memory of the subwoofer instead
of the settings in the built-in DIP switches in
the subwoofer. The stored settings can be

85 Hz

created using the GLM Loudspeaker Manager
Software and the GLM control network. The

stored settings can provide superior exibility

and accuracy compared to the subwoofer's

local user interface controls

The ROTARY LEVEL CONTROL In
addition to the LEVEL switches, the level of
the subwoofer relative to the loudspeakers
can be adjusted with this potentiometer.

Connector Panel Light

When used without a connection to the GLM
software, the light on the connector panel is
green, indicating normal operational mode.

A red colour indicates amplier clipping and

yellow indicates thermal overload. If the red
or yellow warning light appears, turn down
the level.

Setting the Phase Switches

Incorrect phase alignment between main
monitors and subwoofer can cause a drop
in the audio level at the crossover frequency
(see Figure 3).

The phase alignment between the main
monitors and subwoofer depends on
the listening position, the position of the
subwoofer and the monitors in the room.
The phase adjustment should be done only
after the preferred positions are found and
the subwoofer and monitor levels have been
aligned.

The GLM software can adjust the phase
automatically.

If the GLM is not available, the following
manual phase matching can be applied.

Manual Phase Adjustment Method

The Genelec 7380A subwoofer is equipped

.

4

Figure 4. Examples of subwoofer

positioning. 1 and 2 are good starting

positions for a single subwoofer and

also work well with two linked subwoof-

ers. Position 3 causes a signicant

bass boost and may cause asymmetric

spatial imaging if only one subwoofer

is used. Position 4 also works best with

two subwoofers. Flush mounting (pos.

5) generally works well.

with a built-in 85 Hz frequency test tone

generator for phase alignment at the xed

85 Hz crossover frequency. Connect the

monitor to the subwoofer's "TEST 1" output

with a cable. Set the TEST TONE switch
to "ON." Now, you hear an 85 Hz test tone
through the subwoofer and the main monitor.

• Toggle the -180° phase switch on and

o. Set it to the position giving the lowest

sound level at the listening position.

• Toggle the -90° phase switch on and o.

Set it to the position giving the lowest
sound level at the listening position.

• Finally, move the -180° phase switch to
the opposite setting. Deactivate the test
signal. The phase adjustment is now
complete.

Using the LFE +10 dB Function

The LFE channel is usually recorded 10 dB
lower than the main channels so that there
is 10 dB of extra level (headroom) available.

Most AV processors automatically add 10

dB to the LFE channel to restore the level in
the LFE channel but some medium format
mixing consoles and many smaller consoles
do not have the facility to apply the +10 dB
gain to the LFE. To overcome this limitation
Genelec subwoofers provide a +10 dB LFE
gain selectionchannels, this switch should
be set to “OFF”.

The “LFE +10 dB” function should not be

used in the following cases:

4

• If the +10 dB LFE gain is already

10

200

20

30

50

100

Hz

Level vs Freq (Hz) 7380A 11.5.17

10

200

20

30

50

100

Hz

dB SPL

implemented by another device, for
example, a surround sound processor or
the output matrix of a mixing console.

• When producing an audio format that
does not require the use of +10 dB gain
on the LFE channel.

Additional Information

+100

+80

dB SPL
+60

Bass
Roll-Off

-4,-8 and

-12dB

LFE channel

Main channels

Positioning the Subwoofer in a Room

The location of the subwoofer can affect
the frequency response and sound level
dramatically particularly when the room
acoustic effects are strong. Even small

changes in a subwoofer's location can

make a marked dierence in the frequency

response. To begin, place the subwoofer
near the front wall slightly offset from
the room center line. Often systematic
experimentation is needed to find the
location giving the flattest frequency
response at the listening location. Usually
the subwoofer is placed close to a wall as
this creates the highest output. Positioning
the subwoofer close to a corner will boost
the bass level at lower frequencies and may
also cause asymmetrical spatial imaging.

Measured from the subwoofer's driver the

recommended distance to a wall is less than

0.6 m (24 in). This avoids a loss of audio

level at low frequencies created by the audio

reecting o the wall and cancelling certain

frequencies radiated by the subwoofer.

This subwoofer is designed for indoor use
only. The permissible ambient temperature
is 15-35 degrees Celsius (50-95°F)
and relative humidity 20 – 80% (non­condensing). When the product has been
stored or transported in a cool environment
and is taken into a warm room, wait about
one hour before opening packing to prevent
condensation of humidity before connecting
to mains power.

Do not cover the grille or place the subwoofer
so that there is less than 0.1 m (4 in) of free
space in front of the grille. The space must

be ventilated or suciently large to dissipate

heat so that the ambient temperature
does not rise above 35 degrees Celsius
(95°F). Make sure that the space under the
subwoofer allows air flow. Thick carpets
may block ventilation needed for cooling the

electronics. The reex port opening should

have a clearance of at least 7.5 cm (3 in) to

ensure functioning of the reex port.

Operating Environment

Minimum Clearances

Figure 4. Flush mounting the

+40

subwoofer. Note the clearance needed

on the reex port side.

+20

Flush Mounting

When the subwoofer is ush mounted in a

+0

wall or cabinet, ensure unrestricted airow

in the reflex port and amplifier cooling.
Make the recess 7.5 cm (3 in) wider than the
subwoofer. Place the subwoofer to the right
side of the recess if the driver is facing the

room. This leaves sucient free space at the

reex port side. The height and depth of the

recess should not be much bigger than what

Figure 5. The curves above show the

main channel's frequency response

with 85 Hz lowpass ltering, the fre-

quency response of the LFE channel

and the eect of the Bass Roll-O

adjustment to the response of the

7380A.

is needed for ventilation as this may cause

unwanted acoustic eects.

Level vs Freq (Hz) 7380A 11.5.17

Using Multiple Subwoofers

+100

Multiple Genelec 7380A subwoofers can be
coupled together in high SPL applications.

+80

The necessary cabling is dierent for digital

and analog signals. When subwoofers
are close to each other, the sound level
increases typically by 6 dB for each

+60

3rd harmonic

doubling of the number of subwoofers.
When subwoofers are far from each other,

+40

the total increase in the sound level can
be less. It is safe to assume the increase
is 3 dB for each doubling of the number of

+20

2nd harmonic

subwoofers. Accurate understanding of the
increase in sound level requires acoustic

+0

measurements.

Digital Cabling

Run a signal cable from the AES/EBU

OUT connector of the rst subwoofer in

Figure 6. The curves above show the

harmonic distortion analysis of the

7380A in free eld. In half space the

SPL will be 6 dB higher.

the chain to the AES/EBU IN connector of
the next subwoofer. Check that the Digital
LFE and LFE Channel A/B control switches
have the same settings in all subwoofers in

Control Switch Settings When Using

Multiple Subwoofers

the chain.

We recommend using the GLM software

Analog Cabling

When daisy-chaining multiple subwoofers
with analog signals, run a cable from the Link
Out connector to the next subwoofer’s Link
In connector. When using the LFE signal,
also run a cable from the LFE Out to the next
subwoofer’s LFE In.

and its AutoCal function for subwoofer
calibration. Then, no manual adjustments on
the subwoofer are necessary.

1. If the GLM is not available, manual
adjustments can be done as follows:
Calibrate subwoofers one by one. Turn on
only one subwoofer at the time.

2. Calibrate the subwoofer level to match

the level the monitors. Monitors are
usually also calibrated to deliver the
same level at the listening position. Use
the rotary level adjustment trimmer on
the subwoofer and suitable test signals.
Normally an octave wide pink noise
signal located around 1 kHz is used for
monitors and an octave wide pink noise
around 40 Hz is used for the subwoofer.
If you use a sound level meter, correct
for the weighting – for example using A
weighting in an SPL meter reduces the
level reading for low frequencies relative
to the mid frequencies. We recommend
using an acoustical measurement system
able to show the full frequency response
for improved accuracy.

3. Adjust the phase of the rst subwoofer as
instructed in the chapter “Manual Phase
Adjustment Method”.

4. Repeat phases 1 to 3 with all other
subwoofers in the chain, one by one.

5. 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 subwoofers 12 dB compared to
a single subwoofer. In order to match the
SPL level of the complete subwoofer chain
with the main monitor system, reduce the
level of all subwoofers accordingly.

Maintenance

There are no user serviceable parts inside
the subwoofer. Maintenance or repair must

only be done by Genelec certied service

personnel.

Guarantee

Genelec guarantees the subwoofers for two
years against manufacturing faults or defects

altering performance. You can extend the

guarantee to ve years by registering the

product at www.genelec.com. Refer to the
reseller for full sales and guarantee terms.

Safety Considerations

The 7380A has been designed in accordance
with international safety standards. To ensure
safe operation, the following warnings and
precautions must be observed:

• Servicing and adjustment must only be

performed by Genelec certied service

personnel.

• The subwoofer enclosure must not be
opened.

• Do not use this product with a mains
cable or mains outlet having no protective
earth (potential equalizing) connection as
doing so may result in personal injury.

• To prevent re or electric shock, do not

expose the product to water or moisture.

• Do not place objects lled with liquid,

such as vases, on the subwoofer or near
it.

• The amplier is not completely

disconnected from the mains power
unless the mains cable is removed from

the amplier or the mains outlet.

• Free ow of air behind and around the

subwoofer is necessary to maintain

sucient cooling. Do not obstruct airow

around the subwoofer.

• This subwoofer is capable of producing
sound pressure levels in excess of 85 dB,
which may cause a permanent hearing
damage.

Compliance to FCC Rules

This device complies with part 15 of the FCC
Rules. Operation is subject to the following
two conditions:

• This device may not cause harmful
interference, and

• This device must accept any interference
received, including interference that may
cause undesired operation.

Note: This equipment has been tested and
found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide
reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses and can
radiate radio frequency energy and, if not
installed and used in accordance with the
instructions, may cause harmful interference
to radio communications. However, there
is no guarantee that interference will not
occur in a particular installation. If this
equipment does cause harmful interference
to radio or television reception, which can
be determined by turning the equipment

o and on, the user is encouraged to try to

correct the interference by one or more of
the following measures:

• Reorient or relocate the receiving
antenna.

• Increase the separation between the
equipment and receiver.

• Connect the equipment into an outlet on

a circuit dierent from that to which the

receiver is connected.

• Consult the dealer or an experienced
radio/TV technician for help.

Modications not expressly approved by the

manufacturer could void the user’s authority
to operate the equipment under FCC rules.

SPECIFICATIONS

Model 7380A

Lower cut-o frequency -6 dB 16 Hz

Upper cut-o frequency -6 dB (main channel/LFE) 100 Hz/120 Hz

Driver 381 mm (15 in)

Harmonic distortion at 1 m on axis in half space, 30 to 85 Hz

2nd
3rd

Maximum short term sine wave SPL output averaged from 30 to 85 Hz,
measured in half space at 1 meter

Maximum peak SPL output with random pink noise, measured in half
space at 1 meter

Self generated noise at 1 m on axis (A-weighted) <5 dBA

Weight 69 kg (152 lbs)

Dimensions H x W x D 685 x 718 x 492 mm (27 x 281/4 x 193/8 in)

AMPLIFIER SECTION

Short term amplier output power
(Long term output power is limited by driver unit protection circuitry)

Amplier system THD at nominal output <0.01%

Mains voltage 100-240 VAC 50/60 Hz

Power consumption

Standby, ISS active
Idle
Full output, peak

≤ 1% @ 100 dB SPL
≤ 2% @ 100 dB SPL

≥ 119 dB SPL

≥ 123 dB SPL

800 W

<2 W

40 W

600 W

SIGNAL PROCESSING SECTION

Signal connectors 7.1 channel analog IN/OUT

Analog signal input connector XLR female, balanced 10 kOhm

Maximum analog input signal
Analog input sensitivity (100 dB SPL at 1 m)
A

djustment range (LEVEL dip switches + rotary level control)

Digital signal input connector XLR female 110 Ohm
Digital signal output / Thru connector XLR male 110 Ohm

Digital audio input

Word length
Sample rate

Digital input sensitivity (100 dB SPL at 1 m)
Digital input maximum attenuation
Positive input gain selection (GLM control)

Control network

Type
Connection

GLMTM software frequency response adjustment parametric notch lters 20

System calibration Genelec GLM AutoCal™, GLM manual, Stand-alone

Crossover setting in subwoofer's input/output channels

Centralized Bass Management (for analog signal)
Distributed Bass Management (GLM control)

LFE cuto 120 Hz

Midband rejection >400 Hz ≥ 50 dB

Bass Roll-O control operating range in 4 dB steps 0 to -12 dB at 20 Hz

Phase matching control 90° steps with dip switch controls

pin 1 gnd, pin 2 non-inverting, pin 3 inverting

Input low pass xed 85 Hz, output high pass xed 85 Hz

Input low pass selectable 50 to 100 Hz, output no ltering

Analog Link IN/OUT

Digital AES/EBU IN/OUT

+24.0 dBu

-6 dBu

+48 dBu to -6 dBu

AES/EBU Single Wire
AES/EBU Single Wire

16 - 24 bits

32 - 192 kHz

-30 dBFS
48 dB

+6, +12, +18 dB

Proprietary GLM network

2 RJ45, CAT5 cables

15° steps with GLM control

GLM

enclosure

driver and

Subwoofer

out1-7

Power

amplifier

gain

and

Level

optional

Subwoofer in

features

Overload

protection

protection

Infrasound

align

Phase

Room

acoustic

equalizer

GLM

(85 Hz)

highpass

hardware

Bypass

Analogue

Analogue

in 1-7

For each analogue input

+

DSP

lowpass

crossover

Link out

Sum

Link in

Analogue and

AES/EBU inputs

LFE

bandwidth

LFE

+10 dB

Analogue and

AES/EBU LFE

LFE out

Figure 7. The signal path block diagram of the 7380.

7380A Operating Manual

Genelec Document D0148R001. Copyright Genelec Oy 5.2017. All data subject to change without prior notice

International enquiries:

Genelec, Olvitie 5

FIN-74100, Iisalmi, Finland

Phone [phone]

Fax [phone]

Email [e-mail]

In the U.S. please contact:

Genelec, Inc., 7 Tech Circle

Natick, MA 01760, USA

Phone [phone]

Fax [phone]

Email [e-mail]

In China please contact:

Beijing Genelec Audio Co, Ltd

Room 101, 1st Floor Building 71 B33

Universal Business Park

No.10 Jiuxianqiao Road,Chaoyang District,

Beijing 100015, China

Phone [phone], Post code 100015

Email [e-mail]

www.genelec.com

In Sweden please contact

Genelec Sverige

Ellipsvägen 10A

141 75 Kungens Kurva

Sweden

Phone [phone]

Email [e-mail]