10. Disposal; Frequency Response Curves; Polar Patterns - Beyerdynamic DT 790 Mode D'emploi

DT 790 / DT 797 – Headsets
12
Nominal input voltage . . . . . . . . . . . . . . . 2.8 V (= 100 mW at 80 Ω)
Nominal sound pressure level at 1 kHz . . . 100 dB SPL at
T.H.D.. . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.2%
Nominal power handling capacity. . . . . . . 100 mW = 120 dB = 2.8 V
Ambient noise attenuation . . . . . . . . . . . . approx. 35 dBA
Headband pressure . . . . . . . . . . . . . . . . . 5.5 N
Weight without cable. . . . . . . . . . . . . . . . 470 g (1.04 lb)
Microphone
Transducer type . . . . . . . . . . . . . . . . . . . . dynamic
Frequency response . . . . . . . . . . . . . . . . . 40 – 12,000 Hz
Polar pattern . . . . . . . . . . . . . . . . . . . . . . hypercardioid
Output voltage at a distance of 5 cm . . . . approx. 3 mV approx. 1.5 V
Nominal impedance . . . . . . . . . . . . . . . . . 200 Ω
Load impedance. . . . . . . . . . . . . . . . . . . . ≥ 1000 Ω
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . 40 g (0.09 lb)
DT 797
Headphone
Transducer type. . . . . . . . . . . . . . . . . . . . . . dynamic
Operating principle . . . . . . . . . . . . . . . . . . . closed
Frequency response. . . . . . . . . . . . . . . . . . . 5 – 35,000 Hz
Nominal impedance . . . . . . . . . . . . . . . . . . 250 Ω / system
Nominal input voltage. . . . . . . . . . . . . . . . . 2.8 V (= 100 mW at
Nominal sound pressure level at 1 kHz . . . . 100 dB
T.H.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.2%
Ambient noise attenuation . . . . . . . . . . . . . approx. 20 dBA
Headband pressure . . . . . . . . . . . . . . . . . . . 4.5 N
Connector . . . . . . . . . . . . . . . . . . . . . . . . . 6.35 mm stereo jack
Weight without cable . . . . . . . . . . . . . . . . . 395 g (0.87 lb)
Microphone
Transducer type. . . . . . . . . . . . . . . . . . . . . . condenser
Frequency response. . . . . . . . . . . . . . . . . . . 40 – 20,000 Hz
Polar pattern. . . . . . . . . . . . . . . . . . . . . . . . cardioid
Output voltage at a distance of 5 cm . . . . . 5.5 mV/Pa
Nominal impedance . . . . . . . . . . . . . . . . . . 300 Ω
Load impedance . . . . . . . . . . . . . . . . . . . . . ≥ 1000 Ω
Open circuit voltage . . . . . . . . . . . . . . . . . . 5 mV/Pa at f = 1 kHz
Max. sound pressure level . . . . . . . . . . . . . . 136 dB
Signal-to-noise ratio . . . . . . . . . . . . . . . . . . 64 dB
Power consumption . . . . . . . . . . . . . . . . . . < 6 mA
Phantom power . . . . . . . . . . . . . . . . . . . . . 12 – 48 V
Connector . . . . . . . . . . . . . . . . . . . . . . . . . 3-pin XLR male
= 120 dB SPL
1 mW = 0.28 V at 80 Ω
at 80 Ω
250 Ω) = 120 dB SPL
(1/4")
(back electret)
DT 790 / DT 797 – Headsets
Dimensions
Gooseneck length . . . . . . . . . . . . . . . . . . . . 120 mm (4.72")
Head diameter . . . . . . . . . . . . . . . . . . . . . . 19 mm (0.75")
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 g (0.07 lb)

10. Disposal

This symbol on the product, in the instructions or on the
packaging means that your electrical and electronic
equipment should be disposed at the end of its life
separately from your household waste. There are separate
collection systems for recycling in the EU. For more
information, please contact the local authority or your
retailer where you purchased the product.
13