1-1
TECHNICAL SPECIFICATION
General
Dimensions (WxHxD) : 128x30x139.5mm
Weight without batteries : 220g
Laser
Output power : <5mW (3mW typ.)
Wavelength : 780nm
Shock resistance
+X/-X direction : 2.5g
+Y/-Y direction : 2.5g
+Z/-Z direction : 2.0g
Power supply modes
Battery lifetime
Battery level detection – CD mode
Current consumption
Charge section (not on all versions)
Charge current : 250mA ±10%
Max. charge time (µP controlled) : 7h
Temperature protection : 50°C ±5°C
Headphone out (measured with 16 load, DBB/ESP off)
Output power (THD=10%)
/17 version only : 2x4mW (+2/-2dB)
all other versions : 2x2mW (+2/-2dB)
Frequency response (1mW) : 100Hz-20kHz within 6dB
S/N ratio (unwght) : 76dB (80dB typ.)
S/N ratio (A-wght) : 78dB (82dB typ.)
THD+N (1kHz, 1mW) : 1% (0.2% typ.)
Channel crosstalk(1kHz,w/o load) : -40dB (-44dB typ.)
Channel unbalance (-40dB) : 5dB
Volume attenuation (1kHz) : 60dB
Dynamic Bass Boost DBB
Measurement setup CD
Use Audio Signal disc SBC429 4822 397 30184
Low pass filter 22kHz
L
R
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e.g. Sennheiser UPM550
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S/N and distortion meter
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DC-in socket
Primary batteries
2 xLR6
Rechargable batteries
AY3362 (1200mAh)
2.9 - 6.0V
1.7 - 3.6V
1.7 - 3.6V