DT 280 MK II - Helmet BEYERDYNAMIC - Free user manual and instructions

USER MANUAL DT 280 MK II BEYERDYNAMIC

OPERATING INSTRUCTIONS DT 250 / DT 252 / DT 280 / DT 290 / DT 297 Thank you for selecting one of the DT 200 series professional studio headphones or headsets. They have been made in Germany from high-grade materials and assembled under stringent quality and performance tests to provide you with a professional communications tool. Please take some time to read through this instruction booklet to give you an idea of the design criterion and some information on connection, use and maintenance.

When plugging in any of the DT 200-series headsets to the drive amplifier, we recommend that this is done before it is fitted over the ears for use. This will give the technician the chance to check that the volume levels are not too high. Please remember that the user could well be a highly-paid presenter and the consequences of damaging his/her ears may well prove to be music to the ears of the lawyer! The very low levels of distortion can make listening levels higher than is perceived and we have to warn you that listening to programme or talkback at high levels for long periods can permanently damage your hearing.

DT 250 / DT 252 The DT 250 / DT 252 is a closed dynamic headphone offering excellent ambient noise isolation making it suitable for all kinds of applica tions in broad- casting and recording studios. The headband and earphone cushioning systems have been carefully designed for maximum comfort and unobtrusive style. The powerful neodymium magnet system provides high-fidelity reproduction and a balanced sound. The standard impedance is 80 Ω. Furthermore, versions with 250 Ω systems 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 systems 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.english DT 25x / DT 28x / DT 29x

he 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 request the required plugs can be connected at the factory. It is important that the external equipment the studio headphones or the head- sets will be connected to are of good quality and of the correct impedance and power ratings to get the best performance from them. Please refer to the ”Technical Specifications” for detailed information. 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 distance 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 distance of 5 cm the microphone level can be adjusted between 52 mV and 1.3 V at normal speech volumes.

The head phones are fully adjustable and should be positioned for the best fit over the ears. This will give maximum long-term comfort 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 stream, therefore minimising any ‘pop’ sounds. All versions: The microphone boom is rotatable so that the microphone can be placed over the left or right ear.DT 25x / DT 28x / DT 29x

eadphones of the DT 200 series can also be ordered with an integrated limiter. This option ensures that the hearing of the user is protected at any time while using the product. In order to meet the important health and safety criteria the passive circuitry has been designed to achieve a similar sound impression as a complex VCA limiter. It is a two-phase limiting concept which incorporates a smooth decrease of the audio signal by 6 dB after which a hard, protective brick- wall limiter limits the audio signal when the input volume is still increased. The advantage of this concept is the soft, compressor-like transition between the unlimited audio signal and the brick-wall limiter. This area still sounds very good, but signalises the user without producing immediate distortion that the limiter threshold is reached. The headphones and headsets include the addition “LTD” and can be found in chapter 7. “Models”. All models can be ordered with any preferred limiter threshold.

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 damp cloth for cleaning the ear-pads and head- band 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. The 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. The ear-pads can wear out due to effects of skin moisture, cosmetics and mechanical strains while wearing the headphones. From time to time you will need to replace the ear-pads:

1. Remove the ear-pad from the housing part.

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 part can easily be exchanged.

1.5 m, with 3-pin XLR plug and

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.DT 25x / DT 28x / DT 29x

face aux perforations.