Sennheiser RI 150 dimensions IR Audio Transmission Technology Receivers, General Description

RI 150

IR Audio Transmission Technology 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. 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	Cat. No. 004146
￿Charger for two BA 151
	L 151-2 European version	Cat. No. 004457
	L 151-2-120 USA version	Cat. No. 004459
	L 151-2-UK UK version	Cat. No. 004458
	L 151-10 charging unit for 10 receivers	Cat. No. 004494
￿Plug-in mains unit for one L 151-10
	NT 92 European version	Cat. No. 003357
	NT 92-120 USA version	Cat. No. 003358
	NT 92-UK UK version	Cat. No. 003359
￿	Plug-in mains unit for two to five L 151-10
	NT 2013 European version	Cat. No. 003433
	NT 2013-120USA version	Cat. No. 003434
	NG 2013-UK UK version	Cat. No. 054332
	Replacement earpads, black, firmer version	Spare Part No. 037080
￿Replacement earpads, transparent, softer version		Spare Part No. 040949
Product Variants
	RI 150: mono stethoset receiver	Cat. No. 004383
	RI 250: mono stethoset receiver, audiology variant
	with balance control and higher SPL	Cat. No. 004373
￿RI 250 J: Mono stethoset receiver with audio output socket		Cat. No. 004391

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
(RI 250 and RI 250 J: approx. 130 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

188 mm

137 mm

Dimensions of the RI 150/RI 250/RI 250 J