Overview: The HDR 165 is an additional (or replacement)
headset for the Sennheiser
wireless headphone system. The HDR 165 headphones do not include the necessary
transmitter (TR 165), and cannot operate without it. Up to two HDR 165 headsets can be connected to the transmitter at the same time.
Headphone Design: The HDR 165 wireless headphones feature a
circum-aural (around-the-ear), closed design to significantly reduce background
noise. The soft-padded ear cups and headband provide hours of listening comfort.
The headphones have controls on the right ear cup: power on/off, volume up,
volume down, and bass (to
activate the Dynamic Bass Boost feature). With the batteries installed, the HDR
165 headphones weigh approximately 10.5 ounces.
Rechargeable Batteries: The headphones are powered by the
two included "AAA" rechargeable NiMH batteries (1.2V, 820mAh). The batteries
fully charge in approximately 8.5 hours, when placed on the top of the TR 165
transmitter (included with the RS 165 system). The initial battery charge should be approximately 16 continuous hours. Battery life is approximately 18
hours of use. Standard, non-rechargeable "AAA" batteries may be used in the
headphones, but the headphones must not be placed on the charging cradle.
Auto Power Off: If there is no signal from the transmitter
for more than 5 minutes, the headphones automatically switch to standby mode.
Dynamic Bass Boost: The HDR 165's Dynamic Bass Boost feature
raises the intensity of the bass when activated. You can turn the Bass Boost on
or off by pressing the Bass button on the transmitter, or on the headphones.
- Reception Frequency: 2.4-2.48 GHz
- Modulation: 8-FSK Digital
- Frequency Response: 18Hz - 21kHz
- Maximum SPL: 106 dB at 1 kHz, 3% THD
- THD: < 0.5% at 1 kHz, 100 dB SPL
- Transmission Range: Up to 30m (98'), line of sight
- Earcup Dimensions: Width 3.82" Height 4.129" Depth
- Weight: 10.58 oz (with batteries)
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