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Wireless Listening Pleasure
RS 145 comfort
Instruction mManual
Page 2
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I
1
6
5
L
OFF
ON
43
BALANCE
R
L
2
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II
D
C
E
7
8
ON/OFF
9
CHARGE
0
COMPRESSION
INPUT LEVEL
B
A
OFF
ON
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Contents
Contents
Important safety instructions ................................................ 2
The RS 145 comfort RF headphone system ......................... 4
Delivery includes ...................................................................... 4
Product overview ..................................................................... 5
Putting the RS 145 comfort system into operation ............ 7
Setting up the transmitter .................................................... 7
Connecting the transmitter to a sound source ................. 8
Connecting the transmitter to the mains ........................... 9
Inserting and changing the headphones’ rechargeable
batteries .................................................................................... 9
Charging the headphones’ rechargeable batteries ........ 10
Adjusting the headband of the headphones ................... 11
Using the RS 145 comfort system ....................................... 12
Switching the transmitter on and off ............................... 12
Switching the headphones on and off .............................. 13
Searching for a sound source .............................................. 14
Changing the transmission channel .................................. 14
Adjusting the signal of the sound source ........................ 15
Adjusting the volume ........................................................... 16
Adjusting the balance .......................................................... 16
Enhancing the speech intelligibility ................................... 16
Switching the acoustic signals (beeps) on and off ........ 17
Cleaning the RS 145 comfort system ................................. 18
If a problem occurs ... ............................................................ 19
Accessories and spare parts ................................................. 21
Specifications .......................................................................... 21
Manufacturer Declarations ................................................... 23
Index ........................................................................................ 24
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Important safety instructions
Important safety instructions
• Read this instruction manual.
• Keep this instruction manual in a safe place. Always include this
instruction manual when passing the system on to third parties.
• Clean the devices and the mains unit only with a dry cloth.
• WARNING: To reduce the risk of fire or electric shock, do not expose the
devices and the mains unit to rain or moisture.
• Disconnect the mains connector from the wall socket
– to completely disconnect the device from the mains,
– during lightning storms or when unused for long periods of time.
• Only use the supplied mains unit.
• Ensure that the mains unit is
– always readily operable and easily accessible,
– properly plugged into the wall socket,
– only operated within the permissible temperature range (see
“Specifications” on page 21),
– not covered or exposed to direct sunlight for longer periods of time in
order to prevent heat accumulation.
Intended use of the devices
Intended use includes:
• having read this instruction manual, especially the chapter “Safety
instructions”,
• using the devices within the operating conditions and limitations
described in this instruction manual.
“Improper use” means using the devices other than as described in this
instructions, or under operating conditions which differ from those
described herein.
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Important safety instructions
Safety instructions for NiMH rechargeable batteries
If abused or misused, rechargeable batteries may leak. In extreme cases,
they may even present:
• a heat hazard,
• a fire hazard,
• a leakage hazard,
• an explosion hazard,
• a smoke or gas hazard.
Please understand that Sennheiser does not accept liability for damage
arising from abuse or misuse.
Keep away from
children.
Observe correct
polarity.
Do not expose to
moisture.
Do not pack charged
batteries loose – danger
of shorting out / fire
hazard.
Do not continue to use
defective rechargeable
batteries.
Do not mutilate or
dismantle.
Immediately remove
rechargeable batteries
from obviously
defective devices.
Only charge rechargeable batteries with the appropriate
Sennheiser chargers.
Only use original Sennheiser
rechargeable batteries.
Do not short-circuit.
Switch rechargeable batterypowered devices off after use.
When not using rechargeable
batteries for extended periods of
time, charge them regularly
(about every three months).
Do not heat above 70°C/158°F,
e.g. do not expose to sunlight or
throw into a fire.
Only charge rechargeable
batteries at ambient
temperatures between 10 °C and
40 °C.
Dispose of rechargeable batteries
at special collection points or
return them to your specialist
dealer.
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The RS 145 comfort RF headphone system
The RS 145 comfort
RF headphone system
The RS 145 comfort RF stereo hi-fi headphone system offers
excellent sound quality and allows for wireless listening
everywhere in the house and garden. The lightweight
headphones are extremely comfortable to wear and very easy
to use.
The volume can easily be adjusted to individual needs. The
speech intelligibility can be enhanced on the transmitter.
Enjoy a completely unrestricted listening experience without
disturbing others.
Delivery includes
1 HDR 145 headphones
1 TR 145 transmitter with connection cable
2 AAA size NiMH rechargeable batteries, 1.2 V
1 T-RS 100 mains unit
1 adapter 3.5 mm to ¼“ (6.3 mm) jack socket
1 instruction manual
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Product overview
I
II
Product overview
An overview of the headphones and the transmitter is given
on the inside front cover of this instruction manual.
Overview of the headphones
1 Headband
2 Volume control
3 TUNE button
4 Balance control for R/L
volume adjustment
5 ON/OFF switch
6 Earpad
Overview of the transmitter
7 Charging cradle
8 Operation indicator ,
green
9 Charging indicator ,
red
0 Indicator for speech
intelligibility and sound
signal, yellow
A COMPRESSION switch
for speech intelligibility
enhancement
B Channel selector switch
C Connection cable
D Adapter for connection
cable
E Connector of mains unit
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Product overview
Overview of the indicators and acoustic signals
Indicators on the transmitter
Indicator Status Meaning
Operation indicator 8
(ON/OFF)
lit Sound source and
transmitter are switched
on.
Charging indicator 9
(CHARGE)
Indicator for speech
intelligibility
(COMPRESSION) and
sound signal
(INPUT LEVEL)
0
lit Rechargeable batteries
are being charged.
flashes Rechargeable batteries
are fully charged.
lit Speech intelligibility
enhancement is switched
on.
flashes slowly Volume of sound source
is adjusted too low.
flashes rapidly Volume of sound source
is adjusted too high.
Acoustic signals and their meaning
Acoustic signal Meaning
6 short beeps No signal!
Transmitter is switched off
or out of range.
2 long beeps Rechargeable batteries are
almost flat.
Sequence of
3 beeps
Headphones have been
switched off.
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Putting the RS 145 comfort system into operation
Putting the RS 145 comfort system into
operation
Setting up the transmitter
왘 Choose a suitable place near your sound source (e.g. TV,
stereo or home cinema system).
왘 Do not place the transmitter close to metal objects such as
shelf bars, reinforced concrete walls, etc. as this can
decrease the transmitter’s range, which is up to 150 m.
It is not necessary that the transmitter and headphones are in
the same room, so you can move around freely in the home or
outside in the garden.
One transmitter can be used to transmit to several
headphones on the same frequency.
Wall mounting the transmitter
The transmitter is prepared for wall mounting.
The required mounting hardware (screws and
plugs) is not included in the delivery.
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Putting the RS 145 comfort system into operation
Connecting the transmitter to a sound source
You can connect the TR 145 transmitter to different sound
sources, such as a TV, a DVD player or a stereo system.
왘 Switch your sound source off.
'
&
왘 Connect the connection cable C to the headphone socket
of your sound source.
If the plug on the connection cable C is too small for your
headphone socket, plug the adapter to ¼“ (6.3 mm) jack
socket D onto the connection cable.
왘 Adjust the volume of the headphone socket on your sound
source to a medium level. This improves the quality of
cordless sound transmission. If necessary, check the menu
setting of your TV.
With most TVs, the headphone socket is located at the
front or sides.
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Putting the RS 145 comfort system into operation
Connecting the transmitter to the mains
왘 Connect the yellow connector of the mains unit E to the
yellow socket on the transmitter.
왘 Plug the mains connector into a wall socket.
The transmitter automatically switches on and the
operation indicator 8 lights up.
If there is no signal from the sound source for more than three
minutes, the transmitter automatically switches off and the
operation indicator 8 goes off.
Disconnecting the transmitter from the mains
왘 Pull the mains connector out of the wall socket.
Inserting and changing the headphones’ rechargeable batteries
Before using the RS 145 comfort for the first time, you have to
insert the supplied rechargeable batteries.
왘 Lift the left earpad 6 off as described under “Replacing the
earpads” on page 18.
왘 Insert the rechargeable batteries.
Observe correct polarity when inserting
the batteries.
왘 Put the earpad 6 back in place.
If the operating time decreases drastically even when
the rechargeable batteries are fully charged, the
rechargeable batteries are exhausted and have to be
replaced.
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Putting the RS 145 comfort system into operation
K
/
&+$5*(
0
'
'
0
/
Charging the headphones’ rechargeable batteries
Charge the rechargeable batteries for at least 16 hours
prior to first time use. Subsequent charging time is
about the same time as the previous operating time.
The operating time is up to 23 hours.
왘 Place the headphones on the charging cradle 7.Make sure
that the charging indictor 9 lights up red.
The headphones automatically switch off and the
rechargeable batteries are being charged.
Always store the headphones on the charging cradle 7
to ensure that they are fully charged when they are
needed. When the rechargeable batteries are fully
charged, the transmitter automatically switches to
trickle charging and the charging indicator 9 flashes
slowly.
Nearly discharged batteries will significantly reduce the sound
quality. Approx. 10 minutes before the batteries are
completely discharged, an acoustic signal is produced.
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Putting the RS 145 comfort system into operation
/
Adjusting the headband of the headphones
For good sound quality and best possible comfort, the
headband has to be adjusted to properly fit your head:
왘 Wear the headphones so that the
headband 1 runs over the top of your
head.
왘 Adjust the length of the headband so
that
– your ears are completely inside the
earpads,
– you feel even, gentle pressure around your ears,
– a snug fit of the headband 1 on the head is ensured.
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Using the RS 145 comfort system
Using the RS 145 comfort system
To switch the devices on and to listen to your sound source,
proceed as follows:
Sequence of steps Page
1. Make sure that the rechargeable batteries are
10
charged.
2. Switch your sound source (e.g. TV) on. 12
3. Set the volume to a low level. 13
4. Switch your headphones on. 13
5. Set the desired volume. 16
6. If necessary, set a different channel for your
14
sound source.
Switching the transmitter on and off
Switching the transmitter on
왘 Switch your sound source on.
The transmitter automatically switches on and the
operation indicator 8 lights up.
If the transmitter does not switch on:
왘 Increase the volume of your sound source and, if necessary,
read the section “The transmitter does not switch on” on
page 19.
Switching the transmitter off
왘 Switch your sound source off.
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Using the RS 145 comfort system
If there is no signal from the sound source for more than three
minutes, the transmitter automatically switches off and the
operation indicator 8 goes off. The transmitter is now in
standby mode, its power consumption is very low so that it
can remain connected to the mains.
When not using the transmitter for extended periods of
time, pull out the mains connector from the wall socket.
In this case, however, the headphones’ rechargeable
batteries will not be recharged.
Switching the headphones on and off
CAUTION! Hearing damage due to high volumes!
Listening at high volume levels for long periods
can lead to permanent hearing defects.
왘 Before putting the headphones on, set the
volume to a low level (see page 16).
왘 Do not continuously expose yourself to high
volumes.
Switching the headphones on
왘 Set the ON/OFF switch 5 on the headphones
to the position ON.
The headphones switch on and automatically start the
channel search on the last selected channel. If a channel is
found, the channel search stops. You hear the signal of the
found sound source.
If you do not hear the sound source after a short while, please
refer to the chapter “If a problem occurs ...” on page 19.
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Using the RS 145 comfort system
Switching the headphones off
왘 Set the ON/OFF switch 5 on the headphones
to the position OFF.
The headphones switch off.
Always store the headphones on the charging cradle 7
to ensure that they are fully charged when they are
needed.
Searching for a sound source
왘 Make sure that the operation indicator 8 on the
transmitter is lit.
If you do not hear the desired sound source, continue the
search:
왘 Press the TUNE button 3 on the headphones
until you have found your sound source.
왘 If you cannot find your sound source, please read the
following section.
Changing the transmission channel
If several transmitters are operated simultaneously and are
very close to one another, the sound quality can deteriorate
and you hear e.g. hissing noise. To improve the sound quality,
change the transmission channel:
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Using the RS 145 comfort system
%
왘 Set the channel selector switch B on the
transmitter to channel 1, 2 or 3.
To set the headphones to the selected channel:
왘 Press the TUNE button 3 on the headphones.
Adjusting the signal of the sound source
The transmitter automatically ensures that the headphones
always receive an optimum signal. However, the signal of the
sound source can be so weak or so strong that it can no longer
be automatically adjusted.
Signal of the sound source is too weak
If the signal of the sound source is too weak, the indicator for
speech intelligibility and sound signal 0 flashes slowly.
왘 Gradually increase the volume of your sound source until
the flashing stops.
If the signal of the sound source is too weak, an
optimum transmission is not possible. It could be that
the transmitter switches off after some time. Please
refer to the chapter “If a problem occurs ...” on page 19.
Signal of the sound source is too strong
If the signal of the sound source is too strong, the indicator for
speech intelligibility and sound signal 0 flashes rapidly.
왘 Gradually reduce the volume of your sound source until the
flashing stops.
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Using the RS 145 comfort system
Adjusting the volume
왘 Use the volume control 2 to adjust the volume to a
sufficient and comfortable level.
Adjusting the balance
The balance control allows for right/left volume adjustment.
Adjust the balance so that you hear equally well with both
ears.
왘 Turn the balance control 4 to the left L or right R in order
to increase the volume for the corresponding ear. There is a
click-stop in the center position.
Enhancing the speech intelligibility
The RS 145 comfort features a dynamic compression system
which allows you to enhance the speech intelligibility. This
system evens out volume differences, i.e. it reproduces soft
passages louder and decreases loud sounds.
왘 Set the COMPRESSION switch A on the
transmitter to the position ON.
The indicator for speech intelligibility 0
lights up.
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Using the RS 145 comfort system
Switching the acoustic signals (beeps) on and off
An overview of the acoustic signals is given on page 6. The
acoustic signals can be switched on and off as follows:
왘 Switch the headphones on (see page 13).
왘 Press the TUNE button 3 for 5 seconds.
왘 Switch the headphones off for testing (see page 13).
If the acoustic signals are switched on, the headphones
produce a sequence of three beeps at switch-off. If no
beeps are produced, the acoustic signals are now switched
off.
The setting for the acoustic signals is retained in
memory until you change the setting again or replace
the rechargeable batteries.
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Cleaning the RS 145 comfort system
Cleaning the RS 145 comfort system
CAUTION! Liquids can damage the electronics of the
devices!
Liquids entering the housing of the devices can
cause a short-circuit and damage the electronics.
왘 Keep all liquids far away from the devices.
왘 Do not use any cleansing agents or solvents.
왘 Before cleaning, switch the devices off and disconnect the
transmitter from the mains.
왘 Only use a slightly damp cloth to clean the devices.
Replacing the earpads
For reasons of hygiene, you should replace the earpads from
time to time. Spare earpads are available from your
Sennheiser dealer (see “Accessories and spare parts” on
page 21).
왘 To loosens the quarter turn fastener which
secures the earpads to the earcups, turn
the earpads 6 in the direction of the
arrow until you overcome a slight
resistance.
왘 Lift the earpads 6 off the earcups.
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If a problem occurs ...
If a problem occurs ...
The transmitter does not switch on
Possible cause Solution Page
Is the mains unit
connected
correctly?
Check the connection of the mains
unit to the transmitter and to the
mains.
9
Is the volume of the
sound source
sufficient?
Set the volume on your sound source
to a medium value.
12
You cannot hear anything
Possible cause Solution Page
Is the transmitter
placed close to
metal objects?
Are the headphones
still within the
transmitter’s range?
Are all connectors
connected
correctly?
Is the operation
indicator
Are the
rechargeable
batteries charged?
Are the
rechargeable
batteries properly
inserted?
8 lit?
Choose a different place for the transmitter. Make sure that the transmitter
is not placed close to metal objects.
Move the headphones closer to the
transmitter. If necessary, switch the
headphones on again.
Check the connection between the
transmitter and your sound source.
Check if the transmitter is switched
on.
Place the headphones on the charging
cradle. Check the charging indicator.
Remove the rechargeable batteries
and reinsert them into the
headphones.
7
7
8
12
10
9
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If a problem occurs ...
You can hear the sound only with one ear
Possible cause Solution Page
Is the balance
adjusted correctly?
Turn the balance control 4 to the left
or right.
16
The sound of your sound source is hardly intelligible
Possible cause Solution Page
Is the speech
intelligibility
enhancement
deactivated?
You do not hear
your desired
channel?
Is there another
transmitter
operating in the
proximity?
Slide the COMPRESSION switch A to
the right.
Press the TUNE button 3 on the
headphones to start the search for
your desired channel.
Set the transmitter to a different
channel and press the TUNE button
on the headphones.
16
14
14
3
The loudspeakers of your TV are muted
Possible cause Solution
Some TVs have a
function that mutes
the loudspeakers
when you connect a
transmitter.
Via the operating menu of your TV, check if
and how the muting function can be
deactivated.
Alternatively, use a different audio socket
on your TV.
If a problem occurs that is not listed in the above tables or if
the problem cannot be solved with the proposed solutions,
please contact your Sennheiser partner for assistance.
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Accessories and spare parts
Accessories and spare parts
Only use original Sennheiser accessories and spare parts,
otherwise the device quality can be impaired or the devices
can be damaged.
Cat. No. Accessory/spare part
502821 1 HDR 145 additional headphones
511792 1 pair of earpads
Specifications
RS 145 comfort system
Modulation FM, stereo
Frequency range 863 – 865 MHz
Frequency response 18 – 21,000 Hz
Signal-to-noise ratio typ. 68 dB (A)
Ambient temperature 0 °C to +40 °C
TR 145 transmitter
Carrier frequencies 863.3 / 864.0 / 864.7 MHz
Radiated RF power ≤ 10 mW
Power supply 9 V DC via NT-RS 100 mains unit
Power consumption < 1.8 VA
Channels 3
Connector 3.5 mm stereo jack plug
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Specifications
TR 145 transmitter
Weight approx. 430 g
Dimensions
(incl. charging cradle)
approx. 85 x 133 x 225 mm
(W x D x H)
HDR 145 headphones
Transducer principle dynamic, circumaural, closed
Max. SPL (at 1 kHz) 110 dB
THD (at 1 kHz) < 0.5%
Power supply 2 AAA size NiMH rechargeable
batteries (LR 03)
Charging time approx. 16 hrs (full charge)
Operating time up to 23 hrs (with fully charged
rechargeable batteries)
Weight approx. 280 g
incl. rechargeable batteries
NT-RS 110 mains unit
Nominal input voltage 230V AC
Mains frequency 50 Hz
Nominal output voltage 9 V DC
Nominal output current 200 mA
Operating temperature
0 °C to +40 °C
range
Transmitters that operate in the 863 – 865 MHz frequency
range can be used licence-free in the following countries:
AT, BA, BE, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT,
LI, LT, LU, LV, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, TR, UA.
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Manufacturer Declarations
Manufacturer Declarations
Warranty
Sennheiser GmbH & Co. KG gives a warranty of 24 months on this product.
For the current warranty conditions, please visit our web site at
www.sennheiser.com or contact your Sennheiser partner.
CE Declaration of Conformity
This equipment is in compliance with the essential requirements and other
relevant provisions of Directives
The declaration is available on the internet site at www.sennheiser.com.
Before putting the equipment into operation, please observe the
respective country-specific regulations!
Rechargeable batteries
The supplied rechargeable batteries can be recycled.
Please dispose of them as special waste or return them to your
specialist dealer. In order to protect the environment, only dispose
of exhausted batteries.
WEEE Declaration
Your Sennheiser product was developed and manufactured with
high-quality materials and components which can be recycled
and/or reused. This symbol indicates that electrical and electronic
equipment must be disposed of separately from normal waste at
the end of its operational lifetime.
Please dispose of this product by bringing it to your local collection point
or recycling centre for such equipment. This will help to protect the
environment in which we all live.
2006/95/EG and 19
99/05/EG.
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Index
Index
Headphones
Adjusting the balance 16
Adjusting the volume 16
Automatic channel search 14
Charging the headphones 10
Cleaning 18
Operating elements of the headphones 5
Operating time 10
Replacing the earpads 18
Searching for a sound source 14
Switching the acoustic signals on/off 17
Switching the headphones on/off 13
Rechargeable batteries
Changing the batteries 9
Charging indicator 6
Charging the batteries 10
Transmitter
Adjusting the signal of the sound source 15
Changing the channel 14
Cleaning 18
Connection to a headphone socket 8
Connection to a sound source 8
Connection to the mains 9
Enhancing the speech intelligibility 16
Installation 7
Operating elements of the transmitter 5
Switching the transmitter on/off 12
Troubleshooting 19
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Page 30
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany
www.sennheiser.com
Printed in China
Publ. 09/08
532002/A01
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