RI 150
Infrared Wireless Systems | Receivers
General Description
The RI 150 is an extremely lightweight wideband stethoset receiver which uses the carrier frequency 2.3 MHz, thus offering excellent transmission reliability. It features an easy-to-operate on/off/volume control and is powered by the environmentally friendly BA 151 rechargeable NiMH accupack delivered with the receiver.
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Technical Data |
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Modulation .......................................... |
wideband-FM, mono |
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Carrier frequency ...................................................... |
2.3 MHz |
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AF frequency response............................... |
18 – 18,000 Hz |
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THD................................................................................... |
< 1 % |
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Signal-to-noise ratio ............................................ |
typ. 70 dB |
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Max. SPL ............................................................. |
appx. 110 dB |
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Operating time .................................................... |
appx. 6 hrs |
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Weight incl. battery ...................................... |
approx. 1.6 oz. |
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Features
Wideband stethoset receiver
Extremely reliable transmission due to carrier frequency 2.3 MHzExtremely lightweight – only 1.6 oz.
Excellent speech intelligibility and good music reproductionVery easy to use
Operates on environmentally friendly rechargeable NiMH accupack
Delivery includes: 1 x RI 150 mono stethoset receiver, 1 x BA 151 accupack
Recommended Accessories |
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BA 151 accupack |
Cat. No. 004146 |
Charger for two BA 151 |
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L 151-2-120 USA version |
Cat. No. 004459 |
L 151-10 charging unit for 10 receivers |
Cat. No. 004494 |
Plug-in mains unit for one L 151-10 |
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NT 92-120 USA version |
Cat. No. 003358 |
Plug-in mains unit for two to five L 151-10 |
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NT 2013-120USA version |
Cat. No. 003434 |
Replacement earpads, black, firmer version |
Spare Part No. 037080 |
Replacement earpads, transparent, softer version |
Spare Part No. 040949 |
5.3”
Dimensions of the RI 150
7.4”
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5” |
.7 |
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0 |
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RI 150
RI 150
Infrared Wireless Systems | Receivers
Apertures for altering the frequency response
Two IR receiving diodes (behind special plastic cover)
Inserted BA 151 On/off/volume accupack control
RI 150 stethoset receiver
The RI 150 mono receiver works on the extremely reliable carrier frequency 2.3 MHz, offering excellent speech intelligibility and good music reproduction due to its wide frequency response. A built-in squelch avoids loud hiss when the signal from the IR radiators is too weak, for example when a receiver is used outside the radiator coverage area. The RI 150 is an elegantly shaped receiver which is very easy to use: the only control the wearer has to operate in order to hear the transmitted signals is a combined on/off/volume control with a small position indicator for reading off the volume.
The receiver is powered by the environmentally friendly BA 151 NiMH accupack. For domestic applications, the L 151-2 charger is the optimum choice: it is designed for two BA 151 accupacks and comes complete with mains unit. For professional applications, Sennheiser has designed the L 151-10 charging unit. It can recharge up to ten BA 151 directly in the receivers, as the accupack charging contacts are located on the outside. Alternatively, you can also charge BA 151s separately, e.g. in case you have spare accupacks. The L 151-10 requires the NT 92 plug-in mains unit, which can be ordered separately in the version you require (European, UK or USA versions available).
The L 151-10 can also be cascaded: up to five charging units can be joined by means of the cascading bars fixed to the bottom of the units. Two to five cascaded L 151-10 are powered by an NT 2013 (or NG 2013-UK) plug-in mains unit. The recharging of the receivers is carried out automatically and takes 10 hours. After that, the charging unit switches to trickle charging.
Excellent ease of operation: The user has only to operate the on/off/volume control
Three cascaded L 151-10 charging units with NT 2013 (or NG 2013-UK) plug-in mains unit and receivers
Sennheiser Electronic Corporation
One Enterprise Drive, Old Lyme, CT 06371
Tel: (860) 434-9190 • Fax: (860) 434-1759 www.sennheiserusa.com