Idiomas disponibles
Idiomas disponibles
Specifications
Type
HD681 EVO: Dynamic, Semi-open
HD662 EVO: Dynamic, Closed-back
Driver
ø50 mm, neodymium
Sensitivity
98 dB SPL (1mW)
Frequency Response
10-30,000 Hz
Maximum Power
HD681 EVO: 300 mW
HD662 EVO: 200 mW
Rated Impedance
32 Ω (copper-coated aluminum wire)
Earpad
Leatherette
Headphone Caliper Pressure
HD681 EVO: 3.5 N
HD662 EVO: 5 N
Cable
Detachable 1-meter (3.3 ft.) & 3-meter
(9.8 ft.) straight, single-sided; plugin
cable on headphones (mini stereo
connector)
Connectors
Gold plated stereo mini plug
Net Weight(without cable):
HD681 EVO: 265 g (9.3 oz)
HD662 EVO: 275 g (9.7 oz)
Attention
Hearing Damage
Avoid using headphones with the volume
turned up for an extended period of time.
Following are guide line by Occupational
Safety and Health Administration and
CDC, NIOSH:
dB
Occupational noise
SPL
exposure 1991
85
88
8 hours (90 dB SPL)
91
6 hours (92 dB SPL)
94
4 hours (95 dB SPL)
97
3 hours
100
2 hours
103
1.5 hours (102 dB SPL)
106
1 hours (105 dB SPL)
109
30 min (110 dB SPL)
112
115
15 min
NIOSH and CDC
2002
8 hours
4 hours
2 hours
1 hours
30 min
15 min
7.5 min
< 4 min
< 2 min
~ 1 min
~ 30 sec
3
