RS 45 - Wireless Headphones SENNHEISER - Free user manual and instructions

Product type	Wireless stereo headset
Brand	Sennheiser
Model	RS 45
Transmission technology	Stereo FM modulation
RF output power	Up to 10 mW (0.75 mW at 925 MHz)
Signal-to-noise ratio	> 68 dBA
Max. sound pressure level	96 dB
Total harmonic distortion	< 0.7% at 1 kHz
Battery life	More than 4 hours per battery pack
Normal charging time	14 hours (initial charge 24 hours)
Transmitter power supply	12 V DC via power supply unit
Receiver power supply	2.4 V via BA 151 battery pack
Transmitter power consumption	Approx. 1 VA
Receiver power consumption	Approx. 19.5 mA
Transmitter dimensions	155 x 153 x 105 mm
Receiver dimensions	150 x 80 x 200 mm
Transmitter weight	Approx. 186 g (battery pack included)
Receiver weight	Approx. 160 g (battery pack included)
Audio connector	3.5 mm / 6.3 mm stereo jack (RCA adapter for 925 MHz variant)
Number of transmission channels	3 (2 for 863 MHz variant)
Main functions	Automatic search, TUNE adjustment, channel switching, charging on transmitter
Maintenance and cleaning	Soft cloth or chamois, no harsh detergents
Safety	Do not open the device, use only original accessories, risk of hearing damage at high volume
Spare parts and accessories	BA 151 battery pack, L 151-2 charger, additional HDR 45 headset
General information	Compliant with CE standards, safe for radio waves

Frequently Asked Questions - RS 45 SENNHEISER

How to charge the headset for the first time?

Before first use, charge the battery pack for 24 hours. Place the headset on the charging compartment of the transmitter, Sennheiser logo facing forward. The red LED lights up. The headset turns off automatically during charging.

What is the battery life of the headset?

A fully charged battery pack provides more than 4 hours of continuous use. If you need longer duration, purchase an additional BA 151 battery pack.

How to change the transmission channel?

Press the CHANNEL button on the transmitter until the desired LED lights up: LED1 = channel 1, LED2 = channel 2, LED1+LED2 = channel 3 (except 863 MHz variant). Then use the TUNE button on the headset to tune to that channel.

What to do if I hear no sound?

Check that all jack plugs are properly connected, the headset and audio source are turned on, and the volume is set. Ensure the battery pack is charged (at least 20 minutes). Stay within range of the transmitter. If necessary, change the channel or use the TUNE button.

Can I use multiple headsets with one transmitter?

Yes, you can use multiple additional HDR 45 headsets with the same transmitter, provided they are compatible with the same frequency range. Check the information under the transmitter base.

How to clean the headset and transmitter?

Use a soft cloth or a chamois leather. Never use harsh detergents. Protect the furniture surface under the transmitter as the rubber feet may react with the varnish.

What is the range of the headset?

The radio technology offers complete freedom of movement: you can move throughout the house and even in the garden without losing reception, as long as you stay within range of the transmitter. The exact range depends on environmental conditions.

Can I use batteries of other brands?

No, use only original Sennheiser battery packs (BA 151). Batteries from other manufacturers may damage the headset and void the warranty.

What to do if the headset produces interference noises or distorted sound?

This usually indicates that the battery pack is discharged. Recharge it. If the problem persists, change the channel or re-tune with the TUNE button. Also check that you are not near metal objects.

How to recycle used battery packs?

Sennheiser battery packs are recyclable. Fully discharge them by using the headset until it stops, then return them to your specialized dealer for proper recycling. Do not dispose of batteries with household waste.

USER MANUAL RS 45 SENNHEISER

Instruction manual 7

Notice d'emploi 11

Thank you for choosing Sennheiser! Over half a century of accumulated expertise in the design and manufacture of high-quality electro-acoustic equipment have made Sennheiser a world-leading company in this field. We have designed this product to give you reliable operation over many years.

Please take a few moments to read these instructions carefully, as we want you to enjoy your new Sennheiser product quickly and to the full.

System components and connections

Before proceeding, please check and make sure the system components shown are all present and correct (see illustration inside cover page).

Establish the necessary connections.

Charge the accupack for 24 hours before you use it for the first time! (Please refer to the section Charging the accupack.)

Where to place the transmitter

Choose a suitable place near your hi-fi system or TV set.

Do not place the transmitter close to metal objects such as shelf bars, reinforced concrete walls, etc.

The transmitter features a convenient automatic on/off function. The transmitter is switched on by the audio signal. If there is no audio signal for

about 3 minutes, the transmitter automatically switches off. The transmitter is now in stand-by mode, its power consumption is very low so that it can remain connected to the mains. Accupacks can always be recharged when the transmitter is connected to the mains.

Switching the headphone receiver on

The ON/OFF switch is on the right earpiece.

Switching the headphone receiver off

Make sure to switch off the headphones after each use and store the headphones in the transmitter's charging compartment to avoid discharging the accupack.

Adjusting the volume

Set the volume of your sound source to a medium value. With some devices, the volume for the headphone output can be regulated separately.

Use the VOLUME control on the right earpiece to adjust the headphones' volume.

Adjusting the receiver channel

First switch on the transmitter (see section Where to place the transmitter). Then switch on the headphone receiver - as soon as the receiver is switched on it automatically tunes itself to the first strong signal found (normally the transmitter frequency). If, for some reason, the selected channel is not the correct one (eg: because of interference or another nearby system), press the

TUNE button on the earpiece and the auto-tune function will re-tune to the next strong signal. Repeat this until you can hear the audio signal loud and clear. If you decide to change the transmitter channel, the receiver search tuning must be restarted by pressing the TUNE button on the headphones again.

Changing the transmission channel

To avoid interference caused by the simultaneous operation of several transmitters, select a different channel on each transmitter. Depending on the system variant, two or three switchable transmission channels are available. To select a channel, press the CHANNEL button until the desired LED or LED combination lights up:

LED1

channel 1 active

LED2

channel 2 active

LED 1 and 2

channel 3 active (except 863 MHz version).

Complete freedom of movement

It is not necessary that transmitter and telephone receiver are in a direct line of sight, so you can move around freely in the home or outside in the garden. One transmitter can be used to transmit to several receivers on the same frequency.

Additional headphones with the designation HDR 45 are available from your specialist dealer. Please make sure to choose

headphones with the same frequency range as the transmitter you are using (see type plate on the bottom of the transmitter).

Charging the accupack

For charging the accupack, place the headphones into the transmitter's charging compartment (nb: make sure the headphones are inserted the correct way round. The Sennheiser logo on the headband must be readable looking from the front - see diagram. The charging contacts are on the RH earpiece of the headphones - these are placed on the corresponding contacts in the LH indentation of

the transmitter, the one next to the "charge" light). The red LED on the transmitter must light up to show charging is taking place.

Always store the headphones on the transmitter to ensure that they are fully charged when they are needed. The headphones are automatically switched off by the charging process.

BA 151 spare accupack

When the headphones' unpack is going flat (noise, interference and distortion are sure signs of a flat unpack), recharge the unpack. After an initial charging of 24 hours, the normal charging time is 14 hours. A fully charged unpack has an operating time of more than four hours.

If you wish to use your headphones for more than four hours of continuous operation, we recommend purchasing a spare accumulator. Always store the spare accumulator in the charging compartment at the back of the transmitter to ensure that it is fully charged when it is needed. Only use original Sennheiser accumacks – accumacks from other manufacturers may cause damage to your headphones and will invalidate the guarantee.

Additional BA 151 spare accompanies can be charged via the L 151-2 charger (available from your specialist dealer).

Before disposing of an old and exhausted accumulator, make sure that it is totally discharged by using it until the device switches off. To protect the environment, only dispose of totally exhausted accumacks.

Additional information

The audio transmission technology used with this device is basically that of a radio. According to today's scientific knowledge, the radio waves emitted by this device are not harmful to humans or animals.

ATTENTION: LISTENING AT HIGH VOLUME LEVELS FOR LONG PERIODS CAN PERMANENTLY DAMAGE YOUR HEARING.

This device has been designed for use with stereo devices. For connection to mono devices, please use a stereo to mono jack plug available from most audio accessory shops.

Use a soft cloth or, if necessary, a damp wash-leather for cleaning the devices. Do not use aggressive cleansing agents.

Varnish or furniture polish may attack the rubber feet of the transmitter's charging unit. As these could stain your furniture, place the transmitter on a non-slip pad.

If problems occur...

Are all connections properly made?

Are the headphones and sound source switched on and is the volume correctly adjusted?

Have you charged the accupack for at least 20 minutes?

Are you too far from the transmitter? (if so, move closer)

Choose a different channel.

Adjust the setting with the TUNE button.

If the problem persists, please contact your specialist dealer for assistance.

Never open the device!

Only use original Sennheiser spare parts and accessories. Components from other manufacturers (e.g. for mains unit or accupack) may cause damage to the device and will invalidate the guarantee.

Accessories

The following accessories are available from your specialist dealer:

Spare accupack BA 151

Charger L 151-2

Additional headphones HDR 45

Technical data

Modulation FM, stereo

Transmitter

Power supply 12 V DC via plug-in mains unit

Power consumption approx. 1 VA

RF output power typ.up to 10mW

(0.75 mW with 925 MHz version)

Signal-to-noise ratio typ. >68 dBA

Frequency range see type plate located on the bottom

of transmitter

Channels 3 (2 with 863 MHz version)

Audio connector 3.5mm / 1 / 4 " (6.3 mm) stereo jack plug,

(925 MHz version supplied with jack

to 2 x phono plug)

Charging compartments 1, for BA 151 accapack

Weight approx. 186 g incl. accupack

Dimensions approx. 155× 153× 105mm

Receiver

Max. sound pressure level 96 dB

THD < 0.7 % (at 1 kHz and nom. deviation)

Power supply 2.4V via BA 151 accupack

Current consumption approx. 19.5 mA

Operating time more than 4 hrs per accupack

Weight approx. 160 g incl. accupack

Dimensions approx. 150× 80× 200mm

Wireless RS 45

This device has been type-approved to EN 300 220-1 Nov.97 and is in compliance with the applicable CE standards and regulations.

Certification

Before putting the device into operation, please observe the respective country-specific regulations!

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Exigences R&TTE

Subject to alterations