IEBA Communications

The lightweight, closed DT 280 / DT 290 series headsets are ideally suited for broadcasting applications. The headphone is featuring an efficient neodymium magnet system, a very high reproduction precision and a balanced sound. Isolation from surrounding noise is very good. Another special feature is the wide audio frequency response of the mic: 10 – 30,000 Hz.

The soft circumaural earcups and the fully adjustable padded headband are extremely comfortable. The dynamic microphone can be optimally positioned with the flexible gooseneck. The hypercardioid polar pattern guarantees an extremely high-gain-before feedback and noise cancellation. If necessary the assembly of the microphone holder can be changed so that the microphone can be worn on the left or right side (In the factory it is assembled on the left side). The cables to the earcups and microphone run safely in the headband. The connecting cable is bare ended so you can configure it as you see fit. All parts such as ear pads, headband and gooseneck microphone are easy to replace.

Features

* Lightweight, low profile design
* Reference quality, closed ear monitors
* High suppression of ambient noise
* Soft, circumaural ear pad
* Noise canceling microphone
* Dynamic, hypercardioid microphone capsule
* Very high gain-before-feedback
* Flexible gooseneck for optimal positioning
* Noise canceling microphone
* Single exit, plug-in cable assembly

Frequency info & image. Click for larger view.

Headphone Specifications

* Transducer Principle: Dynamic
* Operating Principle: Closed
* Transmission Range: 10 – 30,000 Hz
* Nominal Impedance: 250 ohms/system
* Nominal SPL at 1kHz: 100 dB SPL at 1mW = 0.28V to 80 ohms
* T.H.D.: <0.2% * Nominal Power Rating: 100 mW = 120dB = 2.8V to 80 ohms
* Ambient Noise Insulation: approx. 16 dBA
* Average Pressure on ears: 4.5 N
* Weight without cable: 170 g Microphone Specifications
* Transducer Principle: Dynamic
* Transmission Range: 40 – 12,000 Hz
* Polar: Hypercardioid
* Output Voltage at a distance of 5 cm: approx. 3 mV
* Nominal Impedance: 200 ohms
* Nominal Output Impedance: >1000 ohms

We have three units, still in box. Purchased to expand the Clear-Com system we had, but sold. Never used. These come with bare ends so you can configure them as needed- com on a 4-pin, or separate 1/4″ and Mic jacks for audio monitor and talkback, etc.

New in box. Click for larger image.

It's the 280.