A modelling number of headphones of the manufacturer is divided into three categories: household, audiofil'skie and for professional use. Today we shall consider headphones of the two-100-th series developed specially for studio application. Tested model DT 2 is the dynamic headphones of the closed type positioned for tele-radio broadcasting and sound departments. Nominal impedance DT 2 makes Ohm or 2 Ohm depending on updating model. There is also a variant of model DT 2 with one naushnikom - model DT 252. Specifications Beyerdynamic DT 2 Nominal ( kGc) an impedance Ohm or 2 Ohm Contact pressure 4, Newtons Weight without a cable 2 g the Socket regularly 1/ (3, mm), an adapter on 1/ (6, mm) the Principle of radiation of a sound dynamic, the closed type Interaction with an ear ambushyur completely covers an ear the Level of sound pressure (SPL) 1 dB ( Volt rms) Isolation from external noise dB (A-vzveshennoy) the Range of reproduced frequencies of Hz sony notebook setup download Factor of harmonics (THD, kGc) % Length of a cable of m the Design of headphones Beyerdynamic DT 2 is executed in traditional style. The case of headphones is made mainly of plastic, exception is made with the metal plate located inside of the handle. Ogolov'e in a place of contact with a head, for comfort at use, has porolonovuyu a pillow. Depth of landing of headphones on a head is adjusted from both parties. Plates put forward on four centimeter have fixed positions from each party. Additional comfort at use of headphones give also porolonovy'e small pillows on ambushyurah which are wrapped up in a velvet fabric. Dimensions of one naushnika make h h centimeters. In a photo naushnika in the open kind it is possible to see, how it is arranged naushnik inside. The used dynamic head has a membrane in diameter of millimeters. From mechanical damages the membrane is closed by a large plastic lattice with the acoustic fabric pasted from above. The impedance of a dynamic head sony notebook setup download is equal Ohm, a level of sound pressure at In rms makes 1 dB. Connection is carried out to left naushniku by a special socket. That headphones have served longer, the manufacturer has provided strengthening fastening of a socket by means of additional boltika. Headphones by a wire curtailed into a spiral, with a socket minidjek on the end are connected. The socket is equipped by a groove, for more reliable fastening an adapter on big djek (1/ TRS). In the stretched kind the length of a wire reaches three meters. Measurements in RMAA we Shall look at schedule ACHH received by reproduction by tested system logarifmicheski of the accrueing sine (swept sine). ACHH headphones Beyerdynamic DT 2 By measured schedule ACHH, non-uniformity of headphones makes +/- dB in a range � 200 Hz. The schedule to name a direct line difficultly as it is observed izrezannost' during all frequency range. Harmonious distortions (2+ harmonics) headphones Beyerdynamic DT 2 Level of harmonious distortions at headphones Beyerdynamic DT 2 sony notebook setup download very low. On our measurements of and harmonics it is possible to see, that in mid-frequency area from 3 Hz and on high their level does not exceed- dB (!), That corresponds 0, %. In low-frequency area the quantity of distortions increases up to- dB. The spectrogram of 3-rd harmonic of headphones Beyerdynamic DT 2 On measurements separately 3-rd harmonics can be seen, that the third harmonic practically is absent. A spectrum of the signal reproduced Beyerdynamic DT 250 At submission of frequency kGc On the resulted screenshot it is well visible, that the third harmonic practically merges with shumovy'm a threshold. Except for it in a spectrum of additional harmonics it is not formed. Such good parameters it is necessary to meet not frequently! For comparison we have measured headphones Sennheiser HD-6 in the same conditions. A spectrum of the signal reproduced sony notebook setup download Sennheiser HD-600 At submission of frequency kGc Apparently from measurements Sennheiser HD-600, in a spectrum there is a third harmonic, however a level of the second harmonic below, than at DT 250. For the sake of justice it is necessary to note, that the level of the third harmonic also is low and differs from DT 2 all on dB. Sounding 2 can be characterized Sounding of headphones Beyerdynamic DT as very good. In all range of frequencies sounding worked and detailed enough. From the most typical, drawing attention from the first inclusion, it is necessary to note remarkable attack. Owing to it headphones sound brightly and precisely in all frequency range. Owing to reliability of transfer of timbres use of headphones in the professional purposes is quite justified. However I would not recommend to be guided by sounding of headphones at the data or work above timbres, owing to specificity of sounding of headphones, as class of acoustics. Even the most dear headphones are not high-grade replacement of monitors. For an estimation of quality of sounding concerning other models, we have compared Beyerdynamic DT 2 with Sennheiser HD-600. In our opinion, sony notebook setup download DT 2 plays little bit more qualitatively HD-600, however the difference in sounding is insignificant. The basic distinctions are observed in more precise attack and prorabotannosti on average frequencies, and also in a greater saturation of sounding by low frequencies. To owners HD-6 or the users knowing sounding of these headphones, probably, will seem, that at Beyerdynamic DT 2 surplus of low frequencies. On the other hand, there are the users considering sounding HD-6 deprived sated bass. In our opinion, low frequencies DT 2 are really underlined, however it is with interest compensated them prorabotannost'yu and detail. If at professional use it is necessary to hold in a head the amendment on feature of sounding of the given model at listening music headphones do not have any contra-indications. Important feature Beyerdynamic DT 2 is the closed scheme, giving sound insulation dB. At professional use in most cases it affects in the positive image. Conclusions as a whole Beyerdynamic DT 2 represent very successful decision, allowing to use headphones, both sony notebook setup download for comfortable listening favourite music, and in the professional purposes. Music fans will be pleased with pure sounding and an abundance of basses, and professionals will remain happy detail and good attack. Pluss qualitative sounding; very low distortions on measurements RMAA; reliable fastening of the tip to headphones; Minuses high cost for the Russian buyer. On headphones Beyerdynamic DT 2 sostavlyae Other discussions in conference: [the day before yesterday, ] [8/30/2007, ] [8/30/2007, ] [8/29/2007, ] Comments? Amendments? Additions?

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