Sennheiser RI 150 Specifications

RI 150
IR Audio Transmission Technology |
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. The audio-
logy variant RI 250 is fitted with an additional, recessed balance control. The RI 250 J
is fitted with a 3.5 mm jack output socket.
Features
Wideband stethoset receiver
Extremely reliable transmission due to carrier frequency 2.3 MHz
Extremely lightweight – only 45 g
Excellent speech intelligibility and good music reproduction
Very easy to use
Operates on environmentally friendly rechargeable NiMH accupack
Delivery includes:
RI 150: 1 x RI 150 mono stethoset receiver, 1 x BA 151 accupack
RI 250 and RI 250 J: 1 x RI 250 or RI 250 J mono stethoset receiver,
1 x BA 151 accupack, 1 set of adhesive tape for altering the frequency response
Recommended Accessories
BA 151 accupack
Charger for two BA 151
L 151-2 European version
L 151-2-120 USA version
L 151-2-UK UK version
L 151-10 charging unit for 10 receivers
Plug-in mains unit for one L 151-10
NT 92 European version
NT 92-120 USA version
NT 92-UK UK version
Plug-in mains unit for two to five L 151-10
NT 2013 European version
NT 2013-120USA version
NG 2013-UK UK version
Replacement earpads, black, firmer version
Replacement earpads, transparent, softer version
Product Variants
RI 150: mono stethoset receiver
RI 250: mono stethoset receiver, audiology variant
with balance control and higher SPL
RI 250 J: Mono stethoset receiver with audio output socket
Receivers
Technical Data
Modulation ......................................... wideband-FM, mono
Carrier frequency ......................................................2.3 MHz
AF frequency response...............................18 – 18,000 Hz
THD ................................................................................... < 1 %
Signal-to-noise ratio............................................typ. 70 dB
Max. SPL .........................................................approx. 110 dB
Audio output
(RI 250 J only) ............................ 3.5 mm jack (0.7 V/30 Ω)
Operating time ................................................ approx. 6 hrs
Weight ............................. approx. 45 g including accupack
Cat. No. 004146
Cat. No. 004457
Cat. No. 004459
Cat. No. 004458
Dimensions of the RI 150/RI 250/RI 250 J
Cat. No. 004494
Cat. No. 003357
Cat. No. 003358
Cat. No. 003359
Cat. No. 003433
Cat. No. 003434
Cat. No. 054332
Spare Part No. 037080
Spare Part No. 040949
Cat. No. 004383
Cat. No. 004373
Cat. No. 004391
(RI 250 and RI 250 J: approx. 130 dB)
137 mm