Beyerdynamic DT 250 Manual de usuario

STUDIO HEADPHONES

DT 250 | DT 252

HEADSETS

DT 280 | DT 290 | DT 297

User Manual | Bedienungsanleitung

Mode d’emploi

DT 25x / DT 28x / DT 29x 3

CONTENTS

1. Safety Inructions ..............................4

2. Design Features.................................5

3. Connection .....................................5

4. Operation.......................................6

5. Maintenance ...................................7

6. Models..........................................7

7. Replacement Pas .............................8

8. Optional Accessories ...........................8

9. Disposal ........................................8

10. Technical Specifications ........................9

beyerdynamic GmbH & Co. KG

Theresienraße 8

74072 Heilbronn

Germany

www.beyerdynamic.com

DT 25x / DT 28x / DT 29x4

Thank you for selecting one of the DT 200 series professional

udio headphones or headsets. They have been made in

Germany from high-grade materials and assembled under

ringent quality and peormance tes to provide you with

a professional communications tool.

Please take some time to read through this inruction booklet

to give you an idea of the design criterion and some information

on connection, use and maintenance.

Risk of injury

fWe would like to point out that an excess of high

volumes and long periods of liening may cause

hearing damage. Hearing defects always conitute

an irreversible impairment of hearing ability.

fIf you suer from tinnitus, do not use headphones,

or reduce the volume.

fAccording to regulations to protect employees

again damages caused by noise and vibrations,

please follow these inructions:

Sound pressure level Period of liening

85 dB max. 8 hours

88 dB max. 4 hours

91 dB max. 2 hours

94 dB max. 1 hour

97 dB max. 30 minutes

100 dB max. 15 minutes

fWhen connecting the headphones, please ensure

that the volume is turned down to minimum. Adju

the volume aer putting on the headphones.

Danger to life

fHeadphones draically reduce perception of exter-

nal sounds. Using headphones in road traic can be

potentially dangerous. The user’s hearing mu not

be impaired to the extent that it causes road safety

risks. Please also make sure that you do not use the

headphones in traic as well as within an area of

potentially dangerous machines and tools.

fFuhermore, avoid using the headphones in

situations where hearing mu not be aected,

especially when crossing a railway crossing or at a

conruction site.

1. SAFETY INSTRUCTIONS

DT 25x / DT 28x / DT 29x 5

Liability / intended use

fDo not use the headphones for any application which is not

described in this product information.

fbeyerdynamic GmbH & Co. KG accepts no liability for damage

to the headphones or injury to persons caused by careless,

improper or incorrect use of the headphones, or by use for

purposes not specified by the manufacturer.

2. DESIGN FEATURES

DT 250 / DT 252

The DT 250 / DT 252 is a closed dynamic headphone oering

excellent ambient noise isolation making it suitable for all kinds

of applications in broadcaing and recording udios. The head-

band and earphone cushioning syems have been carefully

designed for maximum comfo and unobtrusive yle. The

poweul neodymium magnet syem provides high-fidelity

reproduction and a balanced sound. The andard impedance is

80 Ω. Fuhermore, versions with 250 Ω syems are available. The

connecting cables to the ear monitors run safely in the headband

and the main connecting cable is terminated on one side with a

multi-pin connector.

DT 280 / DT 290

Same as DT 250, but featuring the dynamic hypercardioid DM 290

microphone. The DT 280 / DT 290 headset is used in intercom and

talkback syems as well as other applications where a dynamic

microphone is required. The DT 280 has an integrated microphone

preamp for AB-powering.

DT 297

Same as DT 250, but featuring a cardioid condenser microphone.

The DT 297 PV is equipped with an integrated preamp for phantom

powering.

3. CONNECTION

The DT 250 / DT 252 headphones are supplied with an appropriate

connecting cable. The the DT 280 / DT 290 / DT 297 headsets are

supplied without connecting cable. For appropriate connecting

cables, please refer to “Optional Accessories”.

Direct solder connections can be made to all cables with free

ends (for cable connection refer to “Block Diagram”). Upon reque

the required plugs can be connected at the factory.

It is impoant that the external equipment the udio headphones

or the headsets will be connected to are of good quality and of

the correct impedance and power ratings to get the be peor-

mance from them. Please refer to the “Technical Specifications”

for detailed information.

DT 25x / DT 28x / DT 29x6

The microphone of the DT 280 / DT 290 headset is designed for

balanced connection. But it can be also connected to

unbalanced microphone inputs.

The DT 297 PV headset is suitable for the connection to balanced

microphone inputs with phantom power. At a diance of 5 cm

the microphone level is 13 mV or 250 mV.

Use the DT 280 headset with integrated preamp for connecting

to TV cameras with a microphone input for AB-powering. At a

diance of 5 cm the microphone level can be adjued between

52 mV and 1.3 V at normal speech volumes.

4. OPERATION

The headphones are fully adjuable and should be positioned

for the be fit over the ears. This will give maximum long-term

comfo and will minimise sound leakage or spill.

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 ream, therefore minimising any ‘pop’

sounds.

All versions:

The microphone boom is rotatable so

that the microphone can be placed

over the le or right ear.

DT 25x / DT 28x / DT 29x 7

5. MAINTENANCE

As with any equipment which will be used near sensitive pas of

the body, it is essential that the ear pads, the headband and the

microphone pop-shield are kept clean.

fUse a 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.

fThe microphone pop-shield of the headsets can be easily

removed and washed in warm water. Please take care that the

pop shield is completely dry when it is replaced.

fThe ear pads can wear out due to eects of skin moiure,

cosmetics and mechanical rains while wearing the head-

phones. From time to time, you will need to replace the ear

pads:

1. Remove the ear pad from the housing pa.

2. Put the new ear pad on the housing so that

the drop-in pins can lock in the corresponding holes.

3. Press the new ear pad with the thumbs of both hands

to the housing until you hear a clear “click” noise.

The modular design of the headphone allows easy servicing as all

pa can easily be exchanged.

6. MODELS

DT 250 Studio headphone, 80 Ω, black,

with WK 250.07 coiled cable,

plug-in type (ereo mini jack plug

with 1/4" adapter) ................... Order # 442.844

DT 250 Studio headphone, 250 Ω, black,

with WK 250.07 coiled cable,

plug-in type (ereo mini jack plug

with 1/4" adapter) ................... Order # 443.530

DT 252 Single-ear udio headphone, 80 Ω,

black, with WK 250.07 coiled cable,

plug-in type (ereo mini jack plug

with 1/4" adapter) ................... Order # 445.177

DT 280 MK II Single-ear headset, 200/80 Ω....... Order # 701.599

DT 280 MK II Single-ear headset, 200/250 Ω...... Order # 701.602

DT 290 MK II Headset, 200/80 Ω.................. Order # 701.610

DT 290 MK II Headset, 200/250 Ω................. Order # 701.629

DT 297 PV MK II Headset, 80 Ω, condenser

microphone (cardioid),

for 12 - 48 V phantom power ........ Order # 701.467

DT 297 PV MK II same as above, but 250 Ω .......... Order # 721.042

DT 25x / DT 28x / DT 29x8

7. REPLACEMENT PARTS

BN 59-59/A Headband cushion................. Order # 503.886

EDT 250 V Ear pads pair

(cloth), for DT 25*/28*/29* ............ Order # 942.704

EDT 250 S Ear pads pair

(so PVC), for DT 25*/28*/29* ......... Order # 943.549

WS 97 AZ Wind shield, charcoal-grey......... Order # 465.313

8. OPTIONAL ACCESSORIES

WK 250.07 Coiled cable for DT 25*

ereo mini jack plug with

1/4" adapter ........................ Order # 442.070

K 190.00 Straight cable for DT 28*/DT29*,

1.5 m, free ends ..................... Order # 431.575

K 190.28 Straight cable for DT 28*/DT29*,

1.5 m, with 4-pin XLR socket ......... Order # 445.304

K 190.40 Straight cable for DT 28*/DT29*,

1.5 m, with 3-pin XLR plug and

1/4" ereo jack plug ................ Order # 445.894

K 190.41 Straight cable for DT 28*/DT29*,

1.5 m, with 5-pin XLR plug. . . . . . . . . . . . Order # 445.312

9. DISPOSAL

fThis symbol on the product, in the operating

inructions or on the packaging means that electrical

and electronic devices mu be disposed of separately

from household wae at the end of their life cycle.

fAlways dispose of used equipment in accordance

with applicable regulations.

For sale within the EU only:

fFor the return of old equipment, there are free collection

points or a free return to beyerdynamic, as well as other

acceptance points for reuse. The addresses are available

at the local city or municipal adminiration.

fDealers for electronic equipment are generally obliged to

take back wae electrical/electronic equipment free of

charge. This obligation also applies to sales via remote

communication.

fFor fuher information, please contact the local authorities

or the dealer from whom the product was purchased.

DT 25x / DT 28x / DT 29x 9

10. TECHNICAL SPECIFICATIONS

DT 250 / DT 252

DT 280 / DT 290 / DT 297

Headphone

Frequency response...................................10 - 30,000 Hz

(for headsets optimised for highe

intelligibility of speech)

Nominal impedance ...................................80 Ω / 250 Ω

Nominal sound pressure

level at 1 kHz ...................100 dB SPL at 1 mW = 0.28 V at 80 Ω

100 dB SPL at 1 mW = 0.5 V at 250 Ω

Input power rating ..................100 mW = 120 dB = 2.8 V at 80 Ω

100 mW = 120 dB = 5 V at 250 Ω

T.H.D. .........................................................< 0.2%

Ambient noise attenuation.......................... approx. 16 dBA

Headband pressure............................................4.5 N

Weight (without cable)

DT 250 / DT 290 / DT 297 .......................................240 g

DT 252 / DT 280 ............................................... 170 g

Wiring Diagram DT 250

DT 25x / DT 28x / DT 29x10

DT 280 / DT 290

Microphone

Transducer type...........................................dynamic

Frequency response...................................40 - 12,000 Hz

Polar pattern .........................................hypercardioid

Inteerence discharging ......................................30 dB

Output voltage at a diance of 5 cm ............ approx. 1.3 mV/Pa

Nominal impedance .................................approx. 200 Ω

Outer diameter.....................................approx. 23.2 mm

Weight .................................................approx. 45 g

Frequency Response Curve

Frequency response curve ± 2.5 dB 0 dB = 1.3 mV/Pa

Wiring Diagram

Polar Pattern

Diance 10 cm

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