Sennheiser HDC 55 Specifications

HDC 55 NoiseGard™
Products for Industry |
General Description
First class stereo headphones with NoiseGard™ active noise compensation
of up to approx. 10 dB. The HDC 55/HDC 551 NoiseGard™ headphones are
small, light, robust and comfortable to wear. The ear pads can easily be
changed, and the headphones can be supplied with any company logo
printed on them (from 500 pieces).
Features
Light
Compact design
Swivelling earpieces
Robust
Replaceable ear pads
Excellent frequency response
HDC 551 with in-line battery pack
Company logo option
Recommended Accessories
Hygiene pads
Product Variants
HDC 55-26, 3 Klinkenstecker: 2.5 + Doppel 3.5
HDC 55-16, seat powered, 2.5 mm Klinke + 3.5 mm
stereo jack (=Doppelstecker)
HDC 551-16-0, battery powered
HDC 551-26-0, battery powered
Stereo Headphones with
NoiseGard™ Active Noise
Compensation
Cat. No. 081452
Cat. No. 004859
Cat. No. 004860
Cat. No. 005222
Cat. No. 005223
Cat. No. 004860
Cat. No. 004859
Cat. No. 005222 HDC 551-16-0
Cat. No. 005223 HDC 551-26-0
Technical Data
Frequency response ................................................. 20 – 18,000 Hz
Transducer principle.................................................. dynamic, open
Nominal impedance ................................................................. 270 Ω
THD ...............................................................................................< 1 %
Active noise compensation..........................................10 dB ± 3 dB
Operating voltage
HDC 55-16/-26...........................................11 – 16 V DC, typ. 7 mA
HDC 551............................................................... 2 x AA size battery
Operating time ............................................................... approx. 60 h
Ear coupling ...................................................................... supra-aural
Contact pressure...........................................................approx. 1.6 N
Weight (without cable)..............................................approx. 115 g
Connection cable................................................... 1.4 m, dual-sided
Connectors
HDC 55-26............................special right angled 3-pin connector,
2.5 mm jack and 3.5 mm double mono jack,
HDC 55-16............................special right angled 2-pin connector,
2.5 mm jack and 3.5 mm stereo jack,
HDC 551-16-0 ........................... 3.5 mm right-angled stereo jack,
battery powering (ARiNC type A1)
HDC 551-26-0 ............... right-angled 3.5 mm double mono jack,
battery powering (ARiNC type A2)
2-pin special connector
HDC 55-16
HDC 55-26
(between 300 – 900 Hz)
seat powering (ARiNC type C2)
seat powering (ARiNC type C1)
3-pin special connector