Overview: The Sennheiser Set 840-TV is an RF stereo TV
listening system that is ideally suited for wireless listening in your house or
in your yard. Whether you are watching a TV program or listening to music, the
Set 840-TV RF stereo system provides excellent sound. It can be connected
directly to your TV, hi-fi system, or radio. The Sennheiser Set 840-TV includes
an RF transmitter/charging station, RF wireless headphones, microphone, and all
the necessary cables needed to connect the system to your TV or audio system.
RF Wireless Range: The Sennheiser Set 840-TV provides a wireless
mobility range of up to 100 feet. It can transmit through walls, so
you don't have to be in the same room as your TV or audio system.
RF Wireless Headphones: The RF wireless headphones features a
stethoscope design. The lightweight RF wireless headphones are comfortable to
wear because of the flexible earpads that fit inside the ear.
RF Transmitter/Charging Station: The RF transmitter/charging
station connects to your television and then wirelessly transmits a stereo audio
signal to the stethoscope-style wireless headphones. The RF transmitter/charging
station also recharges the integrated battery inside the wireless headphone when
they are placed on the base.
System Connections: The included RF transmitter/charging station
features a 3.5mm input to connect to your television's audio or headphone output
using the supplied stereo minijack cable, minijack-to-RCA cable, or 1/4"
Microphone: The Sennheiser Set 840-TV comes supplied with an
external microphone which picks up the television's audio from the TV's built-in
speaker. The microphone plugs into the 3.5mm audio input on the back of the RF
transmitter/charging base and then is placed near the speaker of the television.
Auto Tuning: The wireless headphones automatically search for
one of the 3 channels (925.95, 926.8, 927.5 MHz) of the transmitter to tune in your
Ergonomic Controls: Ergonomic controls and visual feedback of
certain operations make the Set 840-TV easy to use. There is a large, ergonomic
volume control on the stethoscope-style headphones to adjust volume level. There
is also a balance control on the headset to adjust the balance so that you hear
equally well with both ears.
Three Selectable Hearing Settings: The Sennheiser Set 840-TV
offers 3 selectable hearing settings on the transmitter. These settings optimize
speech intelligibility due to switchable compression and treble emphasis.
Auto Power: The RF wireless headphones automatically turn-on
when you place them on your ears and automatically turn-off when you take them out
(after 30 seconds). If you are not within the range of the transmitter, the
headphones automatically switch off after 3 minutes.
Power Supply: The RF wireless headphones feature an integrated
lithium-polymer battery to ensure a long operating time of up to 9 hours. The
headphones charge when they are rested on the transmitter/charging station (up
to 3 hours). They can be placed in the transmitter's charging compartment facing
in either direction. The transmitter/charging station operates off of standard
AC household current using the supplied AC power adapter.
Modulation: FM, stereo
Carrier Frequency: 925.95, 926.8, 927.5 MHz
Range: up to 100'
Frequency Response: 50-16,000 Hz
THD: <1% (1kHz)
SPL: 125 dB
Signal-to-Noise Ratio: 70 dB (A)
Operating Time: up to 9 hours
Charging Time: approximately 3 hours