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Safety instructions
Ǡ 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.
Ǡ Never open electronic devices! This must only be done by authorised
personnel and is all the more important for current-carrying units.
Ǡ Keep the system away from central heating radiators and electric heaters.
Never expose it to direct sunlight.
Ǡ Use the system in dry rooms only.
Ǡ Use a damp cloth for cleaning the system. Do not use any solvents.
Technical data IS 150 IS 300
Modulation FM, mono FM, stereo
Carrier frequencies 2.3 MHz 2.3 MHz / 2.8 MHz
Audio frequency response 18–18,000 Hz 18–18,000 Hz
THD 1 % 1 %
Signal-to-noise ratio typ. 70 dB typ. 64 dB
Receiver RI 150 RI 300
Operating time with one BA 151accuplug approx. 6 h approx. 5 h
Weight with / without BA 151 accuplug 45 g / 35 g 45 g / 35 g
Max. SPL 110 dBA 110 dBA
Transmitter TI 150 TI 300
Power consumption approx. 7 VA approx. 7 VA
Power supply plug-in mains unit:
European version NG 12-DC NT 20
USA version NG 12-120 NT 20-120
UK version NG 12-UK NT 20-UK
Weight approx. 170 g approx. 180 g
Accessories
BA 151 accuplug Cat. no. 04146
RI 150 receiver Cat. no. 04383
RI 300 receiver Cat. no. 04378
Replacement ear-cushions, black (firmer version) Cat. no. 37080
Replacement ear-cushions, transparent (softer version) Cat. no. 40949
MKE 100 TV microphone (for TI 150 only) Cat. no. 03354