Sennheiser HD 51 User manual

HD 51
Products for Industry | Stereo Headphones
General Description
The HD 51 is a pair of open, dynamic stereo headphones which are small,
light, robust and comfortable to wear. The headband has extra padding
for added comfort. The ear pads can easily be changed, and the headphones
can be supplied with any company logo printed on them.
Features
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Exceptionally light
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Compact design
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Robust
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Replaceable ear pads
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Superb frequency response
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Single-sided cable
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Choice of connectors (see Technical Data)
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Company logo option
Recommended Accessories
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Ear pads (1 pair) Cat. No. 047299
Technical Data
Frequency response .................................................18 – 20,000 Hz
Transducer principle.................................................. dynamic, open
Nominal impedance .........................................300 Ω* as standard
Characteristic SPL ................................................ 100 dB (at 1 kHz)
THD ...............................................................................................< 1 %
Ear coupling ......................................................................supra-aural
Contact pressure ..........................................................approx. 1.3 N
Weight (without cable)................................................ approx. 55 g
Connection cable.................................................1.2 m, single-sided
Connectors
HD 51-16-0................................. right-angled 3.5 mm stereo jack
(ARiNC type A1)
HD 51-26-0.....................right-angled 3.5 mm double mono jack
(ARiNC type A2)
Cat. No. 003512 HD 51-26-0
Cat. No. 003511 HD 51-16-0