Specification Sheet

WIRING DIAGRAMS
Positive pressure produces positive voltage on connection 6 of the
headphone socket.
FREQUENCY RESPONSE & POLAR PATTERN
This polar pattern and frequency response curve (measuring tolerance ± 2.5 dB) correspond to a typical production sample for this microphone.
TECHNICAL SPECIFICATIONS
Headphone
Transducer principle. . . . . . . . . . . . . . . . Dynamic
Operating principle . . . . . . . . . . . . . . . . Closed
Transmission range . . . . . . . . . . . . . . . . 10 - 30,000 Hz
Nominal impedance. . . . . . . . . . . . . . . . 80 Ω or 250 Ω / system
Nominal SPL at 1 kHz . . . . . . . . . . . . . . 100 dB SPL at 1 mW
= 0.28 V to 80 Ω
T.H.D. . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.2%
Nominal power rating . . . . . . . . . . . . . . 100 mW = 120 dB
= 2.8 V to 80 Ω
Ambient noise insulation . . . . . . . . . . . . approx. 16 dBA
Average pressure on ears. . . . . . . . . . . . 4.5 N
Weight without cable . . . . . . . . . . . . . . 170 g (DT 280),
240 g (DT 290)
Microphone. . . . . . . . . . . . . . . . . . . . . DT 280/290
Transducer principle. . . . . . . . . . . . . . . . Dynamic
Frequency response . . . . . . . . . . . . . . . . 40 - 12,000 Hz
Polar pattern . . . . . . . . . . . . . . . . . . . . . Hypercardioid
Output voltage
at a distance of 5 cm. . . . . . . . . . . . . . . approx. 1.3 mV/Pa
Nominal impedance. . . . . . . . . . . . . . . . 200 Ω
Nominal output impedance . . . . . . . . . . > 1000 Ω
Outer diameter . . . . . . . . . . . . . . . . . . . approx. 23.2 mm
Microphone. . . . . . . . . . . . . . . . . . . . . DT 290 V.11
Transducer principle . . . . . . . . . . . . . . . . Dynamic
Frequency response . . . . . . . . . . . . . . . . 40 - 12,000 Hz
Polar pattern . . . . . . . . . . . . . . . . . . . . . Hypercardioid
Output voltage
at a distance of 5 cm . . . . . . . . . . . . . . . . . approx. 1.5 V/Pa
Nominal impedance . . . . . . . . . . . . . . . . 200 Ω
Current consumption . . . . . . . . . . . . . . . 8 - 56 mA
Outer diameter . . . . . . . . . . . . . . . . . . . approx. 23.2 mm
Frequency response curve ± 2.5 dB 0 dB = 1.3 mV /Pa
DT 280 / DT 290
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 299
[e-mail] | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E7/DT 280/290 (10.13)
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