IS 380 - Headphones SENNHEISER - Free user manual and instructions

USER MANUAL IS 380 SENNHEISER

Instructions for use 13

Notice d'emploi 23

ALC (Automatic Level Control)

THANK YOU FOR CHOOSING SENNHEISER!

The IS 380 infra-red stereo system, consisting of the TI 380 infra-red transmitter and the HDI 380 infra-red headphone receiver, is designed for cordless audio transmissions in Hi-Fi quality. It can be connected to most Hi-Fi systems or TV sets and allows complete listening pleasure without disturbing others.

FEATURES

• Lightweight, semi-open headphones, extremely comfortable to wear
  Excellent sound quality
• Simple to use
• Powered by environmentally friendly, rechargeable NiMH accumpacks
  Controls for balance and volume directly on the headphones

SPECIAL FUNCTIONS

• ALC ("Automatic Level Control") circuit. The transmitter automatically adjusts to the volume of the audio signal. It always provides an even signal and thus ensures reliable transmission.
• AUTOMUTE ("Automatic Muting") circuit. When the transmission to the headphone is interrupted, the headphone mutes its output, thus avoiding annoying noise.
• TPS ("Transmitter Power Saving") circuit. The infra-red transmitter automatically switches off after some time when it no longer receives an audio signal from the Hi-Fi system or the TV set.

SENNHEISER INFORMATION

• Your local Sennheiser dealer will be happy to provide you with information on the extensive range of Sennheiser products. He has a variety of printed materials on Sennheiser products.
  For up-to-date information on Sennheiser products, you can also visit the Sennheiser WWW site at "http://www.sennheiser.com".

ADVANTAGES

• With cordless sound transmission, you are independent of cables. Only you can hear the sound, and you can decide the volume yourself without disturbing others!
  According to present scientific knowledge, sound transmission by infrared light poses no risk to health whatsoever.
  The new carrier frequencies of 2.3 and 2.8MHz ensure highest reliability, as this transmission range is not subject to interference from fluorescent tubes or digital controls.
• Mains connection via plug-in mains unit. The transmitter thus remains small and unobtrusive. If you take your system to a country with a different mains voltage, all you need to do is purchase the suitable plug-in mains unit.

SENNHEISER TECHNOLOGY AND SENNHEISER SERVICE ARE FUTURE-ORIENTED

Even after many years, you will still have unlimited pleasure from your infra-red sound transmission system. You can buy replacements for parts subject to wear and tear, such as ear-cushions and accupacks, for many years to come. And in the unlikely event that any repairs should be necessary, Sennheiser Service Departments worldwide give moderately priced, fast and competent repairs.

ENVIRONMENT AND HEALTH

Devices powered by rechargeable batteries are environmentally friendly. This energy source can be recharged many times. Conventional batteries, on the other hand, must be disposed of as special waste after they have been used just once. Sennheiser uses environmentally friendly NiMh rechargeable accumacks which contain no heavy metals. If an accupack should be defective, it is then recycled – the dealer who sold it to you will take it back and will also supply you with a new, original Sennheiser accupack. (Recycling methods may differ country to country).

THIS BOX CONTAINS ...

... several individual products. Your new infra-red sound transmission system consists of five components:

① The TI 380 transmitter converts the sound signal from the headphone socket of your television set or hi-fi system into invisible infra-red light and radiates this light into the room.
The transmitter has two integrated charging compartments for recharging the BA 151 accupack.
(2) The transmitter (with the twin charging unit) is powered via a plug-in mains unit.
③ You can connect your television set or hi-fi system with the supplied cable. The 3.5 ~mm mini jack plug fits most headphone sockets. An adaptor for 1 / 4 ” (6.3 mm) headphone sockets is also included in the supply schedule.
(4) The HDI 380 headphones feature an integrated receiver which converts the infra-red light back into an audio signal.
⑤ The BA 151 rechargeable accuack powers the headphone receiver. Before using the BA 151 for the first time, it MUST be charged for 24 hours!

Please also note any enclosed documents which inform you of alterations or country-specific variants. Such documents are supplements to this instruction manual.

SETTING UP THE TRANSMITTER

Place the transmitter near your television set or hi-fi system.

• Use the supplied cable to connect socket ① on the TI 380 transmitter with the headphone socket on your television set or hi-fi system.
  If your television set does not have a headphone socket, the sound signal can also be taken from the SCART socket (video recorder socket). Please order the suitable Sennheiser adaptor (Cat. no. 47874) from your Sennheiser dealer.
  Connect the supplied plug-in mains unit to socket ② on the TI 380 transmitter, then plug the mains unit into the mains.

LEVEL CONTROL OF THE TRANSMITTER

Adjust the volume of your hi-fi system or television set to a middle position. The TI 380 transmitter features an automatic modulation control which prevents overmodulation.

Insert the BA 151 accapack into the compartment in the headphone receiver. Take special note of the instructions on accapack operation on pages 20/21 of this manual!

(NB: The BA 151 accupack must be charged for 24 hours before first use!)

SWITCHING ON THE HEADPHONE RECEIVER

Use switch ③ to turn on the headphone receiver. Adjust the volume with control ④. The balance control ⑤ serves to compensate for volume differences between the left and right channel.

ADJUSTING YOUR HI-FI SYSTEM OR TELEVISION

Please refer to the operating instructions of your hi-fi system or television to find out whether the volume control also adjusts the headphone output or whether it has a separate volume control. With a modern TV set, you can adjust the volume of the headphone socket independent of the speaker volume. The manual will also tell you how to turn off the loudspeakers.

REPLACING THE EAR-CUSHIONS

The ear-cushions can easily be removed from the headphones and cleaned with warm soapy water. From time to time, however, the ear-cushions should be replaced for reasons of hygiene. Please order your ear-cushions from your Sennheiser dealer.

FREE LINE OF SIGHT

Infra-red light from the TI 380 transmitter is transmitted in the same way as the light from a light bulb.

Do not obstruct the path of the light between the transmitter and the receiver, and stay in the room where the transmission is taking place!

There is a simple rule:

If you can see the transmitter from where you are, transmission can take place without any interference.

VOLUME UP? - NO!

When people use headphones, they tend to choose a higher volume than with loudspeakers. Listening at high volume levels for long periods can lead to permanent hearing defects. Please protect your hearing, Sennheiser headphones have an excellent sound quality even at low volumes.

RECHARGING THE ACCUPACKS

For recharging, insert the BA 151 accupack into one of the two charging compartments ⑥ . If you have a second accupack (available as an accessory), you can charge it in the second compartment.

When the accupack is going flat (you can hear hissing noise and slight sound distortions), switch the headphone receiver off and recharge the accupack.

• Recharge a flat unpack immediately. If it remains in the headphone receiver and the receiver is then (or remains) switched on, the unpack will be damaged.
  If possible, use the entire capacity of the accumulator. Short discharging/recharging cycles will reduce its capacity.

N.B.: Before using the accumulator for the first time, it MUST be charged for 24 hours!

NOTE

Charging in the charging compartments ⑥ works even when the transmitter is switched off (“TSP”) as long as it remains connected to the mains!

RECHARGEABLE ACCUPACKS HAVE A "CHARGING CYCLE"

Depending on how long your receiver has been in use, you must also recharge the BA 151 accupack for a certain time. A simple rule of thumb will help you to decide what time is necessary:

Operating time × 3 = recharging time

Example:

1 hour listening 3 hours recharging

2 hours listening 6 hours recharging

3 hours listening 9 hours recharging

OPERATION WITH A SECOND ACCUPACK

By using a second accumulator, you can increase the listening time with your receiver. The second accumulator is always inserted in the charging compartment (6) of the transmitter to ensure that it is ready and fully charged when it is needed.

If you use your system with only one accupack, you must stop after about 4 hours and recharge the accupack for about 12 hours in the charging compartment (6) of the transmitter.

• With a second accupack, you can listen for more than twice the time. Simply place the discharged first accupack back into the charging compartment. After the (partial) recharge, there is an additional (partial) amount of power available:

SAFETY INSTRUCTIONS

• Use the transmitter only with the supplied Sennheiser plug-in mains unit. Always disconnect the mains connector when you wish to change connections or move the device to a different place.
• Never open electronic devices! This must only be done by authorised personnel and is all the more important for current-carrying units.
• Keep the system away from central heating radiators and electric heaters. Never expose it to direct sunlight.
  Use the system in dry rooms only.
  Use a damp cloth for cleaning the system. Do not use any solvents.

TECHNICAL DATA

Modulation

Carrier frequencies

Audio frequency response THD

IS 380

FM, stereo

2.3 MHz / 2.8 MHz

18-18,500 Hz

< 1 %

RECEIVER

Operating time with

one BA 151 accupack

Weight with BA 151 accupack

Weight BA 151 accupack

Max. SPL

HDI 380

approx. 4 h

approx. 192 g

approx. 10g

124 dB(A)

TRANSMITTER

Level control

Current consumption

TI 380

ALC (Automatic Level Control) system approx. 110mA , transmitter has automatic on/off function ("TPS" circuit) via plug-in mains unit (version according to country of purchase) approx. 118g

Power supply

Weight

Cat.no.04146

Cat.no.04554

ACCESSORIES

BA 151 accupack

Supplementary HDI 380 receiver

VOUS AVEZ FAIT UN CHOIX JUDICIEUX:

ACCESSIONS RECOMMANDES

SENNHEISER: MEER INFORMATIE

ALC (Automatic Level Control)

Subject to alterations