7.
Maintenance
• As with any equipment, which will be used in close proximity to sensitive areas of the body,
it is essential that the ear pads and headband are kept clean. Use a damp cloth for cleaning
using warm water only taking care not to allow any water drops into the transducers.
• For cleaning the wind shield remove it from the microphone and wash it under clear
running water. If necessary you can use a mild cleansing agent (e.g. washing-up liquid). Make
sure that the wind shield is completely dry before you replace it onto the microphone.
8.
Service
Servicing must be carried out by qualified service personnel only or directly by:
beyerdynamic Service- und Logistik Center
August-Häußer-Str. 9, 74080 Heilbronn, Germany
Fax: +49 (0)7131 – 617-252
E-mail: [email protected]
Dismantling the headset yourself will invalidate the guarantee.
9.
Versions
HS 400 Signum Aviation headset with 6.35 mm (1/4") and
PJ-068 jack plugs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Order # 721.298
HS 400 Rotor
Aviation headset with U-174/U jack plug
for helicopters, coiled cable . . . . . . . . . . . . . . . . . . . . . . . Order # 722.480
10.
Supplied Accessories
• Padded case
• Wind shield for the microphone
• Connecting cable with 4-pole mini jack plug (3.5 mm) for iPhones,
compatible mobile phones and portable music players such as CD or MP3 players
Customised versions may include different accessories.
11.
Spare Parts / Accessories
BN 59-53/D
Headband pad, black, leatherette . . . . . . . . . . . . . . . . . . Order # 990.681
EDT 600 SS
Ear pads, leatherette, black, viscoelastic. . . . . . . . . . . . . . Order # 904.872
EDT 300 GS
Ear pads, gel-filled, black . . . . . . . . . . . . . . . . . . . . . . . . . Order # 900.799
WS 20 sw
Wind shield, black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Order # 439.975
Adapters for mobile phones from Nokia, Sony, Ericsson, Samsung, Motorola, LG:
Mobile phone adapter, 4-pole mini jack (3.5 mm) . . . . . . . . . . . . . . . . . . . . Order # 703.656
Mobile phone adapter, 4-pole mini jack (2.5 mm) . . . . . . . . . . . . . . . . . . . . Order # 703.648
12.
Technical Specifications
Headphone
Transducer type . . . . . . . . . . . . . . . . . Dynamic
Operating principle. . . . . . . . . . . . . . . Closed
Frequency response . . . . . . . . . . . . . . 10 - 20,000 Hz
Nominal impedance mono/stereo . . . . 210
Ω
/ 270
Ω
Nominal SPL . . . . . . . . . . . . . . . . . . . . 95 dB SPL
T.H.D. . . . . . . . . . . . . . . . . . . . . . . . . . < 0.2%
Power handling capacity. . . . . . . . . . . 100 mW
Sound coupling to ear . . . . . . . . . . . . Circumaural
Ambient noise attenuation . . . . . . . . . approx. 30 dB / dependent on the frequency
Nominal headband pressure . . . . . . . . 8 N
Microphone
Transducer type . . . . . . . . . . . . . . . . . Condenser (back electret)
Frequency response . . . . . . . . . . . . . . 400 - 15,000 Hz
Polar pattern . . . . . . . . . . . . . . . . . . . Figure eight
Output voltage at 1 kHz . . . . . . . . . . . 1 mV - 11 mV/1 Pa, adjustable
Max. SPL . . . . . . . . . . . . . . . . . . . . . . 120 dB
Nominal impedance . . . . . . . . . . . . . . approx. 350
Ω
Current consumption . . . . . . . . . . . . . approx. 6 - 18 mA
Supply voltage . . . . . . . . . . . . . . . . . . typ. 16 V DC (8 - 16 V DC, acc. to RTCA/DO 214)
General
Weight without cable / audio box . . . . . approx. 325 g (0.72 lb)
HS 400 Signum
Cable . . . . . . . . . . . . . . . . . . . . . . . . . approx. 1.80 m (70.87"), straight cable
Connection
Headphone . . . . . . . . . . . . . . . . . . . . 6.35 mm stereo jack plug (1/4")
Microphone . . . . . . . . . . . . . . . . . . . . PJ-068 jack plug
Music player / mobile telephone . . . . . 4-pole mini jack socket (3.5 mm)
26 | 27
english
