Safety Information; Description; Connection; Application - Beyerdynamic DT 790 Mode D'emploi

DT 790 / DT 797 – Headsets
10
Thank you for selecting the DT 790 / DT 797 headset from beyerdynamic.
Please take some time to read carefully through this information before
using the product.
1.

Safety Information

• When connecting the headset, please make sure that the volume
is turned down to minimum. Adjust the volume after putting on
the headphones. Do not set the volume too high, as you could
permanently damage your hearing.
• With wired headsets you should avoid sharp movements, which
could cause the headphones to fall off your head. You could be
seriously injured especially if you are wearing pierced earrings,
spectacles etc. The cable could wind around your neck and cause
strangulation.
2.

Description

The closed DT 790 / DT 797 headsets provide a good isolation from
ambient noise and are suitable for applications in very loud surroundings
such as concerts or sports events. The powerful headphone system
ensures a high reproduction precision and a balanced sound
characteristic. The standard impedance is 80 Ω. In order to avoid
damages, the cables in the headband and gooseneck boom are
covered. The connecting cable is fixed and single-sided.
DT 790
The DT 790 headset provides a hypercardioid dynamic microphone,
which ensures an extremely high gain-before-feedback and noise
cancellation.
DT 797
The DT 797 headset provides a cardioid condenser microphone, with
a high gain-before-feedback and noise cancellation.
3.

Connection

Connect the headsets to devices that are of good quality and of the
correct impedance and power ratings to get the best performance from
them.
The DT 790.00 version provides a bare-ended connecting cable. You
can mount the appropriate connector. Upon request the connector can
also be mounted at the factory.
The DT 790.28 provides a 4-pin female XLR connector and the
DT 797 PV comes with a 3-pin male XLR connector and a 1/4" stereo
jack plug (6.35 mm).
4.

Application

The headband can be set to each head size via the adjustable yokes. The
pivoting gooseneck microphone allows wearing the microphone from the
left or right ear.
DT 790 / DT 797 – Headsets
The microphone should be positioned to the side of the mouth about
20 – 30 mm forward. This will keep it within the direct sound path, but
out of breath stream and therefore minimising any "pop" sounds.
5.

Maintenance

As with any equipment which will be used in close proximity to sensitive
parts of the body, it is essential that the ear pads, the headband and the
microphone pop shield are kept clean. Use a soft, damp cloth for cleaning
the ear pads and headband using only gentle cleansing agents (such as
washing-up liquid). Take care not to allow any water drops into the
transducer elements and do not use any solvent cleaners.
As ear pads can wear out due to effects of skin moisture, cosmetics and
mechanical strains while wearing the headphones, you will need to
replace them from time to time.
If you use an additional pop shield for the microphone, you can wash it
in warm water. Please make sure that the pop shield is completely dry
when it is replaced.
The headset design allows easy servicing, because all parts can be
replaced.
6.

Versions

DT 790.00 80 ohms, cable 1.5 m (4.92 ft),
bare ends . . . . . . . . . . . . . . . . . . . . . . . Order # 488.747
DT 790.28 80 ohms, cable 1.5 m (4.92 ft),
4-pin female XLR connector . . . . . . . . . Order # 488.755
DT 797 PV 250 ohms, cable 1.5 m (4.92 ft),
with 3-pin male XLR connector
and 6.35 mm stereo jack (1/4") . . . . . . Order # 497.894
7.

Spare Parts

BN 59-53/A Headband pad . . . . . . . . . . . . . . . . . . . Order # 340.502
EDT 550 S Ear pads, leatherette. . . . . . . . . . . . . . . Order # 907.119
WS 97 AZ Wind shield, charcoal-grey . . . . . . . . . . Order # 465.313
8.

Optional Accessories

EDT 770 V Ear pads, velours. . . . . . . . . . . . . . . . . . Order # 926.660
9. Technical Specifications
DT 790
Headphone
Transducer type . . . . . . . . . . . . . . . . . . . . dynamic
Operating principle. . . . . . . . . . . . . . . . . . closed
Frequency response . . . . . . . . . . . . . . . . . 5 – 35,000 Hz
Nominal impedance . . . . . . . . . . . . . . . . . 80 Ω / system
11