Beyerdynamic DT-48
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Beyerdynamic DT-48 - Overview
The DT-48 was first developed as a product in 1937 by Beyerdynamic but did not achieve any real success until its relaunch some twenty years later during the mid to late 1950s. It is generally regarded as being the first production moving-coil stereo headphone. There have been multitudinous variations of the basic design over the sixty years since its initial success with various driver characteristics (impedance levels (vary from 5 to 600 Ohms, and revisions to the aesthetic of the construction of the body of the headphone.
Beyerdynamic continues to make the DT48 today and as such it is a consumer electronics product with a remarkably long production period.
Auditory Character
As befits its intended target market (Studio monitoring or aural-acoustical investigations), the DT-48 is designed to be analytical with a flat frequency response and the capacity for good detail retrival. While they perform well in this respect, there is criticism of a limited bass response and compression in the headstage. As such, the sound signature may make them an aquired taste for the purposes of hi-fi listening.
Pricing & Other Data of Interest
DT48 headphones sell for approximately $440 new and can be found for $100-$300 used.
Beyerdynamic DT 48E
Circumaural closed back headphones for broadcast, studio or live field use. These headphones are particularly useful for critical monitoring during field recording, for use with professional DAT and Minidisc recorders.
Technical specifications:
Type: Circumaural Closed Back Dynamic Stereo Headphones
Frequency Range: 16 Hz - 20 kHz
Impedance: 25 Ohms (different versions: 8 and 250 Ohms exist as well)
Sensitivity: 105 db/mW
Maximum Input Power: 100 mW
Connectors: 1/4" Stereo Phone Plug
Weight: 400 g
Beyerdynamic DT 48A.00 - Audiometric Headphones
The Beyerdynamic DT 48 A.00 audiometric headphones are designed for use in aural-acoustical investigations and measurements by ear, nose and throat specialists, research laboratories, and educational facilities.
The supra-aural ear coupling headphones utilizes flat rubber ear caps that are easily identified by their color-coded, left/right-designated covers. All components conform to the currently accepted professional standards, and the cable is supplied bare-ended for application-specific termination.
Technical specifications:
Type: Supra-Aural, Closed-Back Dynamic Audiometric Headphones
Frequency Range: 16 Hz - 20 kHz
Impedance: 5 Ohms +/-10% per Cartridge
Sensitivity: 110 dB SPL (500 Hz, 1 mW @5 Ohms)
Connectors: Unterminated
Weight: 400 g
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 DT48 frequency graph |
 DT48 frequency graph |
