Sennheiser HDI 830 Stereo / mono stethoset receiver

General Description
The HDI 830 is a professional two-channel stethoset receiver for wideband IR transmission systems (with carrier frequencies of 2.3 MHz and 2.8 MHz) in museums, theaters and churches. The wearer can switch between channel 1, channel 2 or stereo signal reception. The receiver provides excellent speech intelligibility and very good music reproduction. It is comfortable to wear and operates for up to 12 hrs on a single charge.

Features
Infrared wideband stethoset receiver
Ideal for stereo and two-channel applications (2.3 / 2.8 MHz)
Excellent speech intelligibility
Very good music reproduction
Balance control for setting the volume for the right and left ear
Ergonomic volume control
Receiver automatically turns on/off when it is put on/removed
High degree of wearing comfort thanks to flexible earpads and low receiver weight
Lithium polymer battery technology ensures a long operating time of up to 12 hours

Technical Data
Modulation FM, stereo
Receiving frequency 2.3/2.8 MHz
Frequency response (headphones) 50 - 16,000 Hz
Max. Sound pressure level (aktiv) 125 dB (1 kHz)
THD, total harmonic distortion < 1 %
Signal-to-noise ratio typ. 75 dB(A)
Operating time (Accupack) up to 12 hrs
Charging time approx 3 hrs
Weight incl. Accu approx. 68 g

Delivery Includes
1 HDI 830 stethoset receiver
1 BA 300 battery
2 alternative pairs of earpads