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· LT 3 PE

General note:

 Make sure to read this operating manual care-

fully and in its entirety. Before plugging in the units for the first 
time, make sure you have complied with all relevant safety and 
operating  instructions.  Keep  this  operating  manual  in  a  safe 
place so you can refer to it at a later date if necessary.

Always:

 If in doubt, consult the operating manual. Make sure 

to comply with all instructions regarding the units' setup and 
ongoing operation.

Cleaning: 

Only use dry or moist cloths to clean your speaker 

cabinets  Never  use  abrasive  or  alcohol-based  cleaning  prod-
ucts. If you need to clean a speaker membrane, do so very care-
fully using a dry cloth. Before cleaning a unit, always unplug the 
power cable.

Humidity  and  sunlight: 

Never  operate  the  unit  in  humid  or 

wet spaces, e.g., near a bath tub, shower, wash basin, drain, in 
a damp basement, or near a swimming pool. Never expose the 
loudspeakers to excessive humidity. Also avoid exposing them to 
direct sunlight. Do not expose device to dripping or splashing 
water. Do not place objects filled with liquids, such as vases on 
the device.

Placement: 

Never mount the units loosely in a vehicle, on an un-

stable surface, on a loose stand, on unsuitable furniture, or with 
insufficient bracing. The loudspeakers could topple and cause 
personal  injuries,  which  you  will  be  liable  for.  Especially  when 
speaker  cabinets  are  mounted  on  stands  or  placed  on  top  of 
TV sets/monitors, they may topple due to external stress (cable 
being pulled, tripping over cable, accidental physical contact) 
– even if they seem to be mounted quite securely. As a result 
of their weight, toppling speaker cabinets can cause consider-
able  damage,  as  well  as  becoming  badly  damaged  themselves. 
The  same  applies  to  undersized  or  unprofessionally  installed 
wall-mounting brackets, particularly on light walls. Always use 
adequately sized wall brackets for mounting loudspeakers, and 
ensure that the wall can withstand the stress. Never mount the 
units near a heat source. This could be a heater or oven, but 
also any other electrical device that heats up during operation 
(e.g., amplifier). Similarly, never place a heat source on top of the 
loudspeakers, such as a fan heater or candles.

Ventilation: 

There are several ventilation slits and openings in 

the unit's housing. These are designed to ensure reliable opera-
tion and stop the unit from overheating. Never block or cover 
the  ventilation  slits;  do  not  place  the  unit  on  a  soft  surface 
such as a bed, couch, carpet, etc., as this blocks the ventilation 
slits in the bottom of the housing. Do not put any newspapers, 
tablecloths, etc., on top of the unit. Most importantly, do not 
cover up the heat sink of the amplifier section or expose it to 
direct  sunlight.  Conversely,  you  should  generally  not  attempt 
to  provide  additional  cooling  to  the  unit  yourself.  This  is  not  
necessary.

Power source: 

Make sure to connect the subwoofer to a power 

source  that  provides  the  correct  voltage,  i.e.,  the  voltage  in-
dicated on the type plate. If you are unsure about the voltage 
provided by your domestic power connection, please contact us 
or your local electricity provider for advice. The unit does not 
require earthing. When connecting to the mains power socket, 
always use the supplied two-pole power cable. Under no circum-
stances should you modify the power cable, as it must comply 
with the official polarity and earthing regulations. Make sure to 
plug the power cable only into a double-pole socket. Make sure 
the power switch is in the “off” position before connecting or 
disconnecting the device.

Cables: 

Lay all the cables flush with the floor and walls. Avoid 

any  loops  in  your  cables  that  could  cause  people  to  trip  up.  
Cable loops can also cause electrical interference and degrade 
the  sound  quality.  Make  sure  to  lay  your  power  cables  out 
of reach so that they are not stood on or squashed by heavy 
objects. If you notice any cable damage, replace the cable. Pay 
special attention to all plug connectors, the mains socket and 
the subwoofer's connector panel. Regularly check all powered 
cables to and from the loudspeakers for insulation issues and 
breakage. If you detect a fault, immediately power down all con-
nected units, unplug the cables and replace the defective cable.

Disuse: 

During prolonged periods of disuse (holidays, etc.), al-

ways unplug the subwoofer from the mains socket. 

Thunderstorms:

 In the event of a thunderstorm, switch off and 

unplug the unit as soon as you can in order to avoid damage 
from lightning strikes.

Overloading:

  Never  overload  your  wall  sockets,  extension 

cables  and  multiboxes,  or  the  integrated  power  sockets  on 
your  electrical  devices.  Power  overloads  can  cause  short  cir-
cuits and fires. Also avoid turning up the volume control exces-
sively  on  your  amplifier,  particularly  if  you  are  also  boosting 
the bass frequencies (bass control, loudness button, bass boost  
button, etc.).

Liquid and foreign substances: 

Liquids or other foreign sub-

stances should never get inside the unit, as they may interfere 
with exposed live parts and cause short circuits or fires. Abso-
lutely avoid spilling any type of liquid onto the unit. In case of a 
fault: Never attempt to repair the unit yourself. Always contact 
our support team first and discuss the fault with them. If ap-
propriate, they may give you instructions on how to clear the 
fault. If this is not possible, send the unit directly to our service 
address.

Transport: 

Take utmost care when transporting the unit, and 

use a sack barrow if possible. Be aware that both the sack bar-
row and the unit can easily fall over as a result of sudden stop-
ping or jolting (uneven ground, lurching movements, etc.).

Unusual noises: 

If any unusual noises occur during operation, 

or if the sound gets distorted, immediately turn down the am-
plifier volume to a level where the sound returns to normal. 

Replacing the fuse:

Unplug  the  power  cable  before  replacing  the  fuse.  Make  sure 
that the replacement fuse has the same rating as the defec-
tive fuse.

Speaker volume: 

Excessive loudspeaker volume can cause ir-

reversible  hearing  loss.  The  subwoofer  may  emit  high  sound 
pressure levels very unexpectedly when it is suddenly triggered 
into activity by a bass impulse (“Standby/Auto On” mode) – par-
ticularly if the unit is on full volume. As well as physical hearing 
loss, also watch out for psychological stress caused by excessive 
volume. Children and pets are particularly sensitive to noise. Al-
ways set the volume control of your audio system to a level that 
is appropriate to the surroundings. When the system is playing 
at high volume, do not stand too closely to the subwoofer and 
never put your ears directly up to any of the loudspeakers.

Please read the following 

safety guidelines  

very carefully.

Packaging materials, 

particularly plastic bags and 

foils, should be kept out of 

children's reach, as they can be 

dangerous (e.g., risk 

of suffocation)

Never leave your children 

alone with electrical devices, as 

there is always a risk of  

electrical shock.

In case of an emergency:  

Immediately  disconnect  the 
unit's  power  plug  from  the 
mains  socket.  In  the  following 
cases, please contact one of our 
service technicians:

4

 Power plug or cable

  is damaged

4

 Liquid or

  other foreign substances  
  have got inside the device

4

 The unit has been directly 

  exposed to rain or another  
  type of liquid

4

 The unit is inoperative   

  even though you have 
  followed all the operating
  instructions

4

 The unit has been dropped

  or otherwise damaged

We  are  not  liable  for  any  inci-
dents resulting from disregard 
of the safety guidelines.

Safety guidelines

Summary of Contents for LT 3 Power Edition

Page 1: ...Technical Specifications and Operating Manual 5 1 Home Theatre Column Speaker System with Active Subwoofer LT 3 Power Edition...

Page 2: ...to trip up Cable loops can also cause electrical interference and degrade the sound quality Make sure to lay your power cables out of reach so that they are not stood on or squashed by heavy objects I...

Page 3: ...or mechanical means including photocopying and recording without prior writ ten consent from Lautsprecher Teufel GmbH Lautsprecher Teufel GmbH Version 1 1 July 2012 If you have any questions suggesti...

Page 4: ...m size If the room is higher than 3 5 m multiply the room size by 1 5 Before using the speaker system for the first time carefully read this operating manual Keep the manual in a safe place for later...

Page 5: ...aker out of the box We recommend that you keep the original pack aging should you ever have to send the speakers back to us for servicing The LT 3 PE speaker system is shipped as a com plete system in...

Page 6: ...ng accessories are available for the LT3 Power Edition Teufel banana plugs These high quality Teufel all round plugs enable you to connect your cables to your speakers in a cost efficient and reliable...

Page 7: ...ly you will know best what works in your room both visually and sonically Trust your eyes and your ears 5 1 speaker placement Centre Since the centre speaker is responsible for all spoken sound includ...

Page 8: ...you should feel free to ex periment with placing it anywhere you like Since the subwoofer is magnetically shielded you can even place it near a CRT TV However you should never use it as a TV table si...

Page 9: ...t to feed the Sub Out sig nal to both of the subwoofer s inputs for an ad ditional bass boost use a Y adapter see Acces sories p 6 Connecting the loudspeakers to an AV surround receiver Note The four...

Page 10: ...cause a reduced bass response or even bass cancellations If the subwoofer is positioned between the front speakers we recommend a phase setting of 0 grey area in the diagram on page 8 if the subwoofe...

Page 11: ...e power LED on the cabinet s front panel indi cates the subwoofer s operating mode Also see R W Line Input Connect the AV receiver s Sub Out to the sub woofer s Line Input using a mono RCA cable optio...

Page 12: ...enna socket To test this simply disconnect all the antenna cables from the wall socket If this makes the hum disappear you will need a ground breaker which is available from most electronics stores fo...

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