Overview

The DT 797 is a perfect combination of the closed DT 770 PRO headphone, the high-quality condenser microphone of the DT 297 headset and a new, pivoting gooseneck microphone boom. This headset has been developed especially for live performances in very loud surroundings such as sporting events etc., where ambient noise attenuation, durability and comfort are of utmost importance.

The powerful headphone systems with a frequency response of 5 - 30,000 Hz provide a perfect reproduction and a balanced sound characteristic. The noise attenuating housing and the soft, circumaural leatherette ear pads provide an excellent isolation from ambient noise. The new, pivoting gooseneck microphone boom can be set into any required position so that the microphone can be used from the right or left hand side. When not in use, the microphone can be turned to the upper position. The condenser microphone is provided with a larger capsule with improved bass response. The cardioid polar pattern ensures a high gain-before- feedback and noise cancellation. In order to avoid damages, the cables in the headband and gooseneck boom are covered. The single-sided cable provides a 6.35 mm stereo jack plug (1/4") and a 3-pin male XLR connector.

Specifications

Headphone

Transducer type
Dynamic

Operating principle
Closed

Nominal frequency response
5 - 35,000 Hz

Nominal impedance
250 ohm / system

Nominal input voltage
2.8V (= 100mW at 250 ohm) = 120dB SPL

Nominal sound pressure level at 1 kHz
100 dB

T.H.D.
<0.2%

Ambient noise attenuation
approx. 20 dBA

Average pressure on ears
approx. 4.5 N

Connector
6.35mm stereo jack (1/4")

Weight (without cable)
395 g (0.87 lb)

Microphone

Transducer type 
Condenser (back electret)

Frequency response
40 - 20,000Hz

Polar pattern
Cardioid

Output voltage at a distance of 5 cm
5.5 mV/Pa

Nominal impedance
300 ohm

Nominal output impedance
1000 ohm

Open circuit voltage
5 mV/Pa at f = 1 kHz

Max. SPL
136 dB

S/N ratio
64 dB

Current consumption
< 6 mA

Phantom supply
12 - 48V

Connector
3-pin XL R male

Gooseneck length
120 mm (4.72")

Capsule diameter
19 mm (0.75")

Weight
30 g (0.07 lb)