Sennheiser HE 60 Instructions Pour L'usager page 5

As this headphone is operating with very high voltage because of the electrostatic
principle, as producer Sennheiser is obliged to point at possible dangers:
Never use the headphone when you have wet hair, use the headphone
only in dry rooms.
Behind the internal and external cover of the earphone systems are hot
parts. Do not stick pointed objects through the mesh!
If the connecting cable is damaged the headphone must not be used any
longer. Defective connecting cables are to be exchanged immediately!
Repairs of the electrostatic hifi stereo headphone are only to be made by
an authorized Sennheiser service agent.
Transducer principle
Sound coupling to the ear
Transmission range
Frequency response
Distorsion
Rated sensitivity
Polarization voltage
Pressure force
Weight (without cable)
Plug
Connecting cable
Subject to alterations.
electrostatic
circumaural
12 - 65,000 Hz / -10 dB
18 - 55,000 Hz / -6 dB
diffuse-field equalized
< 0,1 %
≥ 100 dB / 1 kHz
max. 540 V
3.6 N
260 g
hard-gold plated, 6 pin, gold-plated contacts
3 m, 6-core copper cable (OFC)
Suitable amplifier HEV 70
Security hints
Technical data
(delivery not included)
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