Teufel T4000 Flat Subwoofer Parts list manual

Technical description and instruction manual
Active subwoofer and wireless module
T4000 Flat Subwoofer

2• T4000 Flat Subwoofer
Contents
General notes and information................................. 3
Notice..................................................................... 3
Original packaging.................................................3
Complaints............................................................. 3
Contact...................................................................3
Proper use .............................................................3
For your safety ........................................................... 4
Signal terms...........................................................4
Safety notes...........................................................4
Explanation of symbols .........................................5
Overview ..................................................................... 6
Unpacking ..............................................................6
Product contents ...................................................6
Optional accessories.............................................6
Checking the delivery ............................................6
Control elements and connections .......................... 7
Setup/wall mounting ................................................ 8
Setup location........................................................8
Location tips ..................................................8
Suitable locations:.........................................8
Unsuitable locations......................................8
Preparation ............................................................8
Wall mounting........................................................8
Connection ............................................................... 10
Connecting to a power supply ............................10
Audio connection.................................................10
Connection via SUB IN ................................10
Wireless connection....................................10
Use and settings ...................................................... 11
Activating and deactivating.................................11
Automatic activation/deactivation .............11
Adjusting the amplier and subwoofer...............11
Amplier settings.........................................11
Subwoofer settings......................................11
Care and cleaning.................................................... 12
Troubleshooting ....................................................... 13
Technical data.......................................................... 14
Declaration of Conformity....................................... 14
Disposal .................................................................... 15
Important information in accordance with
the Electrical and Electronic Equipment Act
(Germany: ElektroG)............................................15

3• T4000 Flat Subwoofer
Notice
The information in this document may change
without prior notice and in no way constitutes any
liability on the part of Lautsprecher Teufel GmbH.
No part of this instruction manual may be repro-
duced in any form or be broadcasted in any way
electronically, mechanically, by photocopy or record-
ing without the written permission of Lautsprecher
Teufel GmbH.
© Lautsprecher Teufel GmbH
Version 3.0
March 2022
Original packaging
If you wish to exercise your right of return, we ask
that you be absolutely sure to hold onto the pack-
aging. We can only accept the return of the flat
subwoofer WITH ORIGINAL PACKAGING.
Empty boxes are not available!
Complaints
In case of complaint we will need the following infor-
mation to process your enquiry:
1. Invoice number
Can be found on the sales slip (enclosed with the
product) or on the order confirmation received as a
PDF document, e.g. 4322543
2. Serial number or batch number
Located on the back of the device,
e.g. serial no.: KB20240129A-123.
Thank-you for your support!
General notes and information
Contact
Please contact our customer service with any ques-
tions, suggestions or criticism:
Lautsprecher Teufel GmbH
BIKINI Berlin
Budapester Str. 44
10787 Berlin (Germany)
Phone 00800 - 200 300 40 (toll-free)
Fax: +49 (0)30 / 300 930 930
Service: www.teufelaudio.com/service
Contact: www.teufelaudio.com/contact
Proper use
The T4000 Flat Subwoofer is intended exclusively
for the playback of low tones and for use as part of a
speaker system.
Only use the subwoofer as described in this instruc-
tion manual. Any other use will be deemed as not in
accordance with the instructions and may lead to
damage of property or even persons.
The manufacturer accepts no liability for damage
caused by use not in accordance with the instruc-
tions.
The T4000 flat subwoofer is intended for private
use.
To improve readability, the T4000 flat subwoofer will
be referred to as the “subwoofer” in this instruction
manual.
Before operating the subwoofer for the first
time, please read the safety notes and in-
struction manual carefully. Only in this way,
can you ensure that all functions are used in a safe
and reliable manner. Store the instruction manual
in a safe place and also be sure to pass it on to any
subsequent owner.

4• T4000 Flat Subwoofer
For your safety
Signal terms
You will encounter the following signal terms in this
instruction manual:
WARNING
This signal term indicates a moderate risk, which,
if not avoided, may result in death or severe injury.
CAUTION
This signal term indicates a low risk, which, if not
avoided, may result in minor or moderate injury.
NOTE
This signal term warns you of potential damage.
Safety notes
WARNING
Improper electrical installation or excessive
mains voltage may result in an electrical shock.
• The device is suitable for a mains voltage of
230 V ~ / 50 Hz. When connecting the device,
make sure that the correct voltage is present. You
can find more information in this respect on the
nameplate.
• Check the device regularly for damage.
Immediately disconnect the mains plug and do
not operate the device if its housing or mains ca-
ble is defective or exhibits other visible damages.
• Please pull the mains plug to completely discon-
nect the device from the mains.
The mains plug must be easily accessible so that
the device can be disconnected from the mains at
any time.
• If the device emits smoke, smells burnt or pro-
duces unusual sounds, immediately disconnect it
from the mains and do not operate it further.
• Never open the device housing.
Repairs may only be carried out by an authorised
specialist workshop. In the process, only parts that
correspond to the original device data may be used.
• Only use the accessory products specified by the
manufacturer.
• Only use the device in indoor areas.
• Do not operate the device in wet rooms and pro-
tect it from dripping and splash water. Make sure
that no vases or other vessels filled with liquid are
located on the device or nearby in order to prevent
liquid from penetrating the housing. If water or
other debris ends up penetrating the housing,
immediately pull the mains plug and take out any
batteries. Then send the device to our service
address.
• Never touch the mains plug with wet hands.
Children can become trapped in the packing film
when playing and suffocate.
• Do not allow children to play with the device or the
packing film. Danger of suffocation.
• Ensure that children do not remove small parts
from the device or take them off of the device
(e.g. control knobs or plug adapters). They could
swallow the parts and choke.
• Never let children use electrical equipment unsu-
pervised.
Extended listening at high volumes may
lead to hearing loss.
• To avoid damage to health, avoid extended listen-
ing at high volumes.
• When the volume is set high, always keep a
certain distance from the device and never place
your ear directly on the speaker.
• If a speaker is set to full volume, this may produce
very high sound pressure. This may have psycho-
logical consequences and also cause physical
injury. Children and pets are particularly at risk.
Set your signal source device volume control to a
low setting before turning on the power.

5• T4000 Flat Subwoofer
CAUTION
An unsuitable setup location could lead to
damage.
• Do not use the device at extreme temperatures or
in areas where there is a risk of fire or explosion.
• Never use the subwoofer unmounted in vehicles,
in unstable locations, on wobbly tripods or furni-
ture, on insufficiently dimensioned brackets etc.
The subwoofer could tip or fall down and cause
injury to persons or be damaged itself.
• Place the subwoofer in such a way that it cannot
be knocked over inadvertently and make sure that
the cables do not pose a trip hazard.
• Carefully follow the instruction manual.
In case of a wall mounting, proceed with caution
and follow the instruction below:
• If mounting the subwoofer on the wall, make sure
that this task is done in a professional manner.
• In case of a wall mounting, make sure that the
walls have sufficient carrying capacity.
• Make sure that there are no cables or pipes in the
drilling areas. Before you drill, use a metal detec-
tor to check the applicable areas. Otherwise, there
is a risk of electrocution/short-circuiting!
NOTE
External influences may damage or destroy the
device.
• If the device is to be left unsupervised for a long
period (e.g. during a holiday), or if a thunderstorm
is forecast, disconnect the power plug from the
mains power supply. Otherwise, sudden overvolt-
age could cause the device to become defective.
• If the device is subjected to warm temperatures
after being cold (e.g. after transport), condensa-
tion may occur inside of it. In this case, wait at
least 2 hours before you connect and activate it.
Improper use may lead to damage or fire.
• Do not place open flames such as burning can-
dles or similar on the device.
• Ensure sufficient ventilation.
• Do not place the device in direct sunlight.
The isolation pads can produce discolouration on
sensitive surfaces.
• On parquet, varnished wood and similar surfaces,
you should stick felt gliders to the rubber feet of
the subwoofer or put blankets or small carpets
under them. This will prevent discolouration of the
floor over the long term.
Explanation of symbols
Safety class II
Dual insulation
Risk of electrical shock – do not open
the housing. Disconnect the mains cable
before changing a fuse.
T2 AL / 250 V fuse

6• T4000 Flat Subwoofer
Overview
Unpacking
NOTE
The 3 speakers of the subwoofer are located on its
underside.
• When lifting the subwoofer out of the box, do not
reach into the sensitive diaphragms.
• Carefully open the box and lift out the subwoofer
and remove all packaging parts.
Product contents
①1 x T4000 Flat Subwoofer
②1 x mains cable
③1 x cable tie
④2 x isolation pads
Instruction manual
Warranty card
Optional accessories
⑤1 x wireless plug-in module
Checking the delivery
• Check that all items have been delivered and that
nothing is damaged.
• If the delivery is incomplete or exhibits transport
damages, please contact our service team (see
page 3).
• Do not in any case operate the device if it is dam-
aged.
①
②
③
④
⑤

T 3.15 AL/250 V
230V AC ~ 50 Hz
250 WATTS
ON
T 4000
LAUTSPRECHER TEUFEL GMBH
BERLIN
WIRELESS MODULE
POWER
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
OFF
7• T4000 Flat Subwoofer
Control elements and connections
12 34 5
68910111215 1314 7
Item Label Description
1POWER Power LED (green = on,
red = sleep mode/standby)
2SUB LEVEL
Volume control for
subwoofer
3HIGH-PASS
Controller for frequency
above which the subwoofer
operates
4CLIP Overload indicator (red)
5 POWER Mains switch
6–Mains connection jack
7–Mains fuse
8PHASE
Switch for shifting the
phase (shifts the subwoofer
phase by 180°)
Item Label Description
9 INPUT
Toggle for the subwoofer
input (WIRELESS / SUB IN)
10 POWER
Automatic activation/de-
activation or permanent
activation
11 AUTO LEVEL
Activation sensitivity control
for the automatic activation/
deactivation function
12 SUB IN RCA input jack
13 PAIRING Button for establishing the
wireless connection
14 STATUS Power LED for the wireless
connection
15 Bay for the wireless plug-in
module ⑤

8• T4000 Flat Subwoofer
Setup/wall mounting
Setup location
The construction of the T4000 Flat Subwoofer offers
a wide range of setup possibilities.
Location tips
• Select a stable, level base or a load-bearing wall.
• Make sure that the environment is clean and free
from dust.
• Select a location away from heat sources and
direct sunlight.
• Lay the connector cables so that they do not pose
a tripping hazard.
• Do not place any heavy objects on the cables.
Suitable locations:
– directly under the TV set (observe the max. carry-
ing capacity of 50 kg),
– under the sofa,
– securely mounted on the wall,
– generally, you can also set it up at any other lo-
cation in the room as the human ear is unable to
localize low tones.
Unsuitable locations
– However, do not set it up in the corner of the room
as this may result in uncontrollable frequency
rises.
Preparation
④
• Stick the two insulation pads ④on the intermedi-
ate axis between the drivers.
They prevent vibrations and provide additional
stability if the subwoofer is set up in a level posi-
tion or wall mounted.
• If the base is uneven (e.g. floorboards), you can
also select other positions for the isolation pads
so that the subwoofer is in a level position on the
side support points and the isolation pads.
Wall mounting
You will need the following material to mount the
subwoofer on a solid stone wall:
• 4x dowels (ø 8 mm)
• 4 x flat headed screws, 5 x 50 mm
• 1 cable tie ③
Tools:
• Spirit level
• Ruler
• Pencil or similar
• Drill with an 8 mm rock drill
• Screwdriver
• 4 mm Allen key
CAUTION
• Make sure that there are no cables or pipes in
the drilling areas. Before you drill, use a metal
detector to check the applicable areas. Other-
wise, there is a risk of electrocution / short-cir-
cuit or a risk of water damage!
NOTE
Proceed with care when mounting the product on
the wall and follow the instructions below.
• Only qualified persons may mount the
subwoofer on the wall.
• The device may only be mounted on a suitable,
solid wall. Special dowels or anchors may be
necessary when mounting the product on light-
weight walls. Consult a qualified professional in
this case.
17
18
1. Unscrew the two side parts.

9• T4000 Flat Subwoofer
2. If you want the drivers to be visible or turned up,
you can unscrew the brackets, remove the red
frame and remount both after a rotation by 180°.
3. Transfer the positions of the keyhole openings of
the angle brackets 17 to the wall where you would
like to hang up the subwoofer. Use a ruler, pencil
and spirit level for this.
4. Use a metal detector to check the drill areas. If
necessary, select another area for mounting the
subwoofer.
5. Use an 8 mm rock drill to drill holes, which are
approx. 45 mm deep, at the marked positions.
6. Insert the dowels (ø 8 mm) all the way into the drill
holes.
7. Screw the subwoofer securely onto the wall so
that the screws are located in the small slot of the
keyhole openings of the angle brackets 17 and
the subwoofer is securely mounted on the wall.
17
18
8. Mount the frame 18 again and screw the side
parts securely back in place.
9. Use the enclosed cable tie ③to bundle the
connector cables. Then pull the protective foil off
of the baseplate of the cable tie and affix it to a
suitable location.

10 • T4000 Flat Subwoofer
Connection
Connecting to a power supply
T 3.15 AL/250 V
230V AC ~ 50 Hz
250 WATTS
ON
T 4000
LAUTSPRECHER TEUFEL GMBH
BERLIN
POWER
OFF
56
• Ensure that the mains switch 5is off (“OFF” posi-
tion).
• Connect the mains connection jack 6with a
mains socket using the mains cable ③.
Audio connection
WIRELESS MODULE
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
9
You can set the audio input of the subwoofer using
the switch 9“INPUT”:
• “WIRELESS” – If you have inserted a wireless
plug-in module ⑤and your amplifier supports a
wireless connection with the subwoofer (you can
find a list of compatible devices on www.teufel.de
or www.teufelaudio.com).
• “SUB IN” – If you have connected the subwoofer
to the subwoofer output on your amplifier.
Connection via SUB IN
WIRELESS MODULE
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
12
• Use a mono RCA cable (not included in the prod-
uct contents) to connect the jack 12 “SUB IN” to
the subwoofer output on your amplifier.
Wireless connection
If you would like to establish a wireless connection
between your compatible amplifier and the T4000,
you can order a wireless plug-in module ⑤and a
corresponding transmitter unit in our web shop.
NOTE
Risk of damage!
Switch the subwoofer off and pull out the mains
plug before you insert or pull out the module.
WIRELESS MODULE
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
14 1315
1. Switch your T4000 Flat Subwoofer off and pull the
mains plug.
2. Insert the wireless plug-in module ⑤in bay 15.
The module's plug connector only fits the bay in
one direction. Do not apply force. If necessary,
turn the module around.
3. Switch on your subwoofer and your wireless-com-
patible amplifier.
The two devices will now connect automatically.
An existing connection is indicated by the blue
LED 14 “STATUS”.
Proceed as follows to connect for the first time or
if the devices do not connect automatically or the
connection is interrupted:
– Hold the button 13 “PAIRING” down until the LED
14 “STATUS” blinks.
– Then perform the corresponding steps for your
amplifier to establish the connection (for this,
refer to the instruction manual for your amplifi-
er).

11• T4000 Flat Subwoofer
Use and settings
Activating and deactivating
WIRELESS MODULE
SUB-LEVEL
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
T 3.15 AL/250 V
230V AC ~ 50 Hz
250 WATTS
ON
POWER
OFF
15
6
• Use the mains switch 5to switch the main power
supply on or off. When the subwoofer is activated,
the power LED 1 is green. If the subwoofer is in
standby, it is red.
Automatic activation/deactivation
WIRELESS MODULE
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
1011
• You can toggle between the operating modes with
the switch 10 “POWER”:
ON The subwoofer is permanently switched on.
AUTO The subwoofer switches itself on as soon
as an audio signal is present. If there's no
audio signal for approx. 20 minutes, the
subwoofer switches to standby.
• If the auto-function doesn't switch correctly, you
can increase or decrease the sensitivity using the
controller 11 “AUTO LEVEL” by turning it clockwise
(to increase it) or counter-clockwise (to decrease
it). You will need a small screwdriver to do this.
Adjusting the amplifier and
subwoofer
Most amplifiers provide a menu with settings for the
speakers (called “Speaker Setup” or similar).
Amplifier settings
If possible, use the amplifier's calibration function
so that it adjusts the levels, phase and run times to
the room. If your receiver doesn't provide an auto-
matic calibration function, the following values are
recommended:
– Subwoofer to “On”.
– Crossover frequency for subwoofer (cut-off fre-
quency) to 80–150 Hz depending on the connect-
ed speaker system.
Subwoofer settings
WIRELESS MODULE
SUB-LEVEL HIGH - PASS
PHASE INPUT
POWER
AUTO LEVELSUB IN
WIRELESS
PAIRING
STATU S
POWER CLIP
MID
HIGH
LOW
WIRELESS
SUB IN
180°
0°
AUTO
ON
23
910
– Move the switch 10 “POWER” to “AUTO”.
– Move the switch 9“INPUT” to “SUB IN”.
– Set the volume control 2“SUB LEVEL” to the me-
dium setting (“0 dB”).
– Set the controller 3“HIGH-PASS” to “20 Hz”. This
determines the frequency at which the subwoofer
starts to play back bass tones.
1. Perform an audio test now and adjust the volume
control 2“SUB LEVEL” until the subwoofer can be
“easily heard”. However, it must not drone.
2. If any deep “hits” are too hard increase the setting
of the controller 3“HIGH-PASS”.
3. Repeat these steps with different CDs and DVDs.

12 • T4000 Flat Subwoofer
Care and cleaning
• Ideally, you should remove dust or small amounts
of dirt with a dry, smooth leather cloth.
• Before you wipe off stubborn dirt with a damp
cloth, pull the mains plug. Make sure that no
liquid penetrates the housing.
• Then immediately wipe the damp surfaces off with
a soft cloth without applying pressure.
Note
Risk of damage!
Using the wrong cleaning agents may damage the
delicate surface of the case.
• If possible, only use plain water without any ad-
ditives. In case of stubborn marks, a mild soap
solution may be used.
• In no circumstances should caustic cleaning
products, white spirit, thinners, petrol or similar
be used for cleaning.

13• T4000 Flat Subwoofer
Troubleshooting
The following advice should help you to solve problems. If this does not help, you will find useful information in
the detailed FAQs on our website. Otherwise, please contact our hotline (see page 3). Take note of the warran-
ty instructions.
Problem Possible cause Solution
The subwoofer doesn’t
work.
The subwoofer is off or doesn’t
have any power.
Activate the subwoofer with the mains switch
5. Check the mains cable and socket.
Input signal is too weak. The following solutions are possible:
• Increase the volume on the amplifier.
• Set the controller 11 “AUTO-LEVEL” to a
higher value.
• Set the switch 10 “POWER” to “ON”.
The overload protection has been
triggered and the indicator 4
“CLIP” is illuminated in red.
Let the device cool off and slightly reduce the
level using the controller 2“SUB LEVEL”.
Fuse defective. 1. 2.
Disconnect the mains
cable. Carefully pull
the fuse holder on the
mains connection jack
out.
Push the old fuse
down and out. Insert a
new fuse (2 A delayed
action) and push the
holder back.
The subwoofer hums. The subwoofer is connected to a
different power circuit from the
amplifier.
Connect the amplifier and
T4000 Flat Subwoofer to the same power
circuit.
The humming is caused by prob-
lems with the power supply.
Buy a mains filter and connect the amplifier
and subwoofer to it.
The humming is caused by a
multiple socket strip.
Use a different multiple socket strip or connect
the subwoofer directly to the wall socket. It may
also help to insert the mains plug in the socket
the other way around.
The subwoofer does not
automatically turn off.
The switch 10 “POWER” is set to
“ON”.
Set the switch 10 “POWER” to “AUTO”.

14 • T4000 Flat Subwoofer
Dimensions (WxHxD) 955 x 125 x 300 mm
Weight 13.2 kg
Operating voltage 230 V~/50 Hz
Max. power consumption 250 watts
Maximum carrying capacity 50 kg
Technical data
You can find further technical data on our website. Technical changes reserved!
Declaration of Conformity
Lautsprecher Teufel GmbH declares that this product complies with Directive 2014/53/EU. The full
text of the EU Declaration of Conformity can be found at this web address:
www.teufel.de/konformitaetserklaerungen
www.teufelaudio.com/declaration-of-conformity
The following radio frequency bands and radio transmitters are used in this product:
Radio network Frequency bands in Mhz Transmitter power mW/dBm
Avnera 2405.35–2477.35 1/0

15• T4000 Flat Subwoofer
Disposal
Important information in
accordance with the Electrical and
Electronic Equipment Act (Germany:
ElektroG)
We advise owners of electrical and electronic appli-
ances that old electrical and electronic devices must
be handed in separately from municipal waste, in
accordance with the applicable regulations. Batte-
ries and rechargeable batteries that are not firmly
enclosed in old electrical devices and lamps, and
that can be removed from the old device without
destroying them, must be separated from them in a
non-destructive manner before they are handed to
the collection point for their intended disposal. Plea-
se take note of our information on the Batteries Act
[Germany: BattG] below for disposing of batteries.
You make an important contribution to returning,
recycling and further processing of old devices if you
separate your old devices into the correct collection
groups for recycling.
The symbol below of a crossed-out dustbin, applied
to electrical and electronic appliances, also advises
of the duty to separate collections:
Consumer electronics stores and supermarkets are
obliged, under certain conditions, to take back old
electrical and electronic devices, in accordance with
section 17 of the Electrical and Electronic Equipment
Act. Stationary retailers must take back an old electri-
cal device of the same type when a new electrical de-
vice is bought (1:1 return). This also applies to home
deliveries. These retailers must also take back up to
three small old electrical devices (≤ 25cm) without
this being linked to a new purchase (0:1 return).
In accordance with the Electrical and Electronic
Equipment Act, as online retailers of electrical
devices and due to our product range, our obligation
is limited to 1:1 return of large devices of > 50 cm
when selling a new electrical or electronic device
of the same type. We comply with the obligation of
return of devices other than large devices through
our service provider. You can find the exact contact
data and collection points on our website
www.Teufel.de/entsorgung. It is also possible to
return old electrical and electronic appliances free of
charge at an official delivery point run by the public
waste disposal authorities.
Important: For safety reasons we ask that you
refrain from sending lighting fixtures (some lamps).
For return of lighting fixtures please use the public
waste disposal collection points or contact us direct-
ly at www.Teufel.de/entsorgung.
As an end-user, you are responsible for deleting any
personal data on old electrical appliances before
handing it in.
Important: Our appliances can contain batteries/
rechargeable batteries. If this is the case, please
refer to its attached product documentation for
additional information on the type and chemical
make-up of the battery. For products with battery
compartments you can directly remove the batte-
ries or rechargeable batteries and dispose of them
properly. If the batteries are built in to the product,
do not in any case attempt to remove the batteries
yourself, instead contact one of our employees or
appropriate specialist staff.

Instruction No. 92673_EN_20220307_V3.0
Please contact our customer service department with any questions, sugge-
stions, or complaints:
Lautsprecher Teufel GmbH
BIKINI Berlin
Budapester Str. 44
10787 Berlin (Germany)
www.teufelaudio.com
Phone.: [phone] (toll-free)
Fax: +49 (0)30 - 300 930 930
Service: www.teufelaudio.com/service
Contact: www.teufelaudio.com/contact
No responsibility is assumed for the
correctness of this information.
Technical changes, typographical
errors and other errors reserved.