RI 300 - Headphones SENNHEISER - Free user manual and instructions
Find the device manual for free RI 300 SENNHEISER in PDF.
| Brand | Sennheiser |
| Model | RI 300 |
| Product type | Infrared stereo receiver |
| Use | Headphone amplifier, additional receiver for IS 300 stereo system |
| Weight (with battery) | 45 g |
| Weight (without battery) | 35 g |
| Battery life | Approx. 5 hours with a BA 151 battery |
| Modulation | FM stereo |
| Carrier frequencies | 2.3 MHz / 2.8 MHz |
| AF bandwidth | 18 - 18000 Hz |
| Harmonic distortion | < 1 % |
| Signal-to-noise ratio | typ. 64 dB |
| Max. sound pressure level | 130 dBA / 126 dBA |
| Power supply | BA 151 (NiMH) battery |
| Charging | In transmitter Set 150/300, charger L 151-2 or charging strip L 151-10; 24 h before first use |
| Maintenance | Slightly damp cloth; ear cushions washable in warm soapy water |
| Spare parts | BA 151 battery (Ref. 04146), EP1 black ear cushions (Ref. 04655), white double ear cushions, L 151 charger (Ref. 04457), L 151-10 charging strip (Ref. 04494) |
| Safety | Do not set volume to maximum; protect your hearing; avoid obstacles on infrared path |
| Environment | NiMH batteries recyclable; return used batteries to Sennheiser |
| Intended use | Indoor use only |
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USER MANUAL RI 300 SENNHEISER
THANK YOU FOR CHOOSING SENNHEISER!
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.
AREAS OF APPLICATION
Infra-red stethoset receivers for use as additional receivers for existing infra-red transmission systems or for use in conferences and simultaneous translation applications.
VARIANTS
RI 150
Infra-red mono stethoset receiver, designed for use as a personal sound amplifier for people with impaired hearing. It can also be used as an additional receiver for the Set 150 infra-red mono transmission system.
RI 300
Infra-red stereo stethoset receiver, designed for use as a personal sound amplifier. It can also be used as an additional receiver for the IS 300 infra-red stereo transmission system.
ADVANTAGES
With cordless sound transmission, you can be independent from cables!
According to current scientific knowledge, sound transmission by infra-red light poses no risk to health whatsoever.
High reception reliability due to the carrier frequencies of 2.3MHz and 2.8MHz . Fluorescent tubes and digital controls do not use this frequency range.
Lightweight and extremely comfortable to wear - the receiver weighs only 45g , including the rechargeable accupack!
Insert the BA 151 accupack into the compartment in the receiver.
SWITCHING ON THE RECEIVER ON
Use the rotary switch to switch on the receiver and adjust the volume.
CLEANING / REPLACING THE EAR-CUSHIONS
Use a damp cloth for cleaning your stethoset receiver. Do not use any solvents.
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. Replacement ear-cushions are available with different degrees of softness:
Black ear-cushions, firmer version
EP1 Cat. no. 04655
White ear-cushions, softer version
EP2 Cat. no. 04656
Please order your ear-cushions from your Sennheiser dealer.
FREE LINE OF SIGHT
Infra-red light 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!
Make sure that you wear the stethoset receiver the right way round, with the "Sennheiser" logo at the front.
There is a simple rule: If you can see the transmitter or the infra-red radiator 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.
ACCUPACK OPERATION
- When the accumpack becomes weak (noise interference and sound distortion are sure signs of a weak accumpack), switch off the receiver and recharge the accumpack. (If necessary, use a second accumpack to listen while the first accumpack is being recharged.)
Recharge the unpack immediately when it is flat. If the unpack is flat but is left in the switched on receiver, this reduces the service life of the unpack ("total discharge").
As far as possible, use the full capacity of an accumulator before you recharge it. Frequent short discharge and recharge cycles prematurely reduce its charging capacity.
CHARGING THE ACCUPACKS
The stethoset receivers are powered by BA 151 accumpacks which can be recharged either separately or in the receivers. Depending on the application, there are different possibilities for recharging the accumpacks.
The BA 151 can be recharged
in the Set 150 and Set 300 transmitters,
in the L 151-2 charger (suitable for charging two individual accompanies) or
in the L 151-10 charging unit.
For commercial use, Sennheiser offers charging and transport/storage units for recharging a larger number of stethoset receivers at a time.
The BA 151 accupack must be charged for 24 hours before first use! Please refer to the corresponding section in the operating manual of your infra-red transmission system or the operating manuals for the chargers.
ENVIRONMENT AND HEALTH
Devices powered by rechargeable accrupacks are kind to the environment. 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. If an accrupack 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 accrupack. (Recycling methods differ in different countries).
RECHARGEABLE ACCUPLUGS HAVE A „CHARGING CYCLE"
Depending on how long your receiver has been in use, you must also recharge the BA 151 accuplug 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 ACCUPLUG
By using a second accuplug, you can increase the listening time with your receiver. The second accuplug is always inserted in the charging compartment of the transmitter to ensure that it is ready and fully charged when it is needed.
If you use your system with only one accuplug, you must stop after about five hours and recharge the accuplug for about 15 hours in the charging compartment of the transmitter.
With a second accruplug, you can listen for more than twice the time. Simply place the discharged first accruplug back into the charging compartment. After the (partial) recharge, there is an additional (partial) amount of power available:
IMPORTANT!
- Keep the receiver away from central heating radiators and electric heaters. Never expose it to direct sunlight.
Use the receiver in dry rooms only.
TECHNICAL DATA
Modulation
Carrier frequencies
AF frequency response
THD
Signal-to-noise ratio
Operating time with one accupack
Weight with / without accpack
Max. sound pressure level
RI 150
FM, mono
2.3 MHz
18-18,000 Hz
< 1 %
typ. 70 dB
approx. 6 h
45g / 35g
130 dBA
RI 300
FM, stereo
2.3 MHz / 2.8 MHz
18-18,000 Hz
< 1 %
typ. 64 dB
approx. 5h
45g / 35g
130 dBA/126 dBA
SENNHEISER TECHNOLOGY AND SENNHEISER SERVICE ARE FUTURE-ORIENTED
Even after many years, you will still have unlimited pleasure from your infrared sound transmission system. You can buy replacements for wearing parts 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.
ACCESSORIES
BA 151 accupack
Cat.no.04146
Black ear-cushions, firmer version
EP1 Cat. no. 04655
White ear-cushions, softer version
EP2 Cat. no. 04656
L 151 charger for two accumacks
Cat.no.04457
L 151-10 charging unit for 10 receivers or 10 accumacks
Cat.no.04494
NOTICE D'EMPLOI
RI 150
RI 300
VOUS AVEZ FAIT UN CHOIX JUDCIEUX:
EP2 N^ Ref. 04656
FONCTIONNEMENT SUR ACCU
EP2 N^ Ref. 04656