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Produkte > Mikrofone > AEA > Active Series
Features Technische Daten Modelle / Preise Zubehör Hersteller
A840
Active Version of R84 Ribbon Microphone

- Aktive Version des R84 Bändchen Mikrofon
- 12dB höhere Sensitivität als R84
- Deutscher Torrodial Transformator und JFET Elektronik
- Gleicher Klang wie das mehrfach ausgezeichnete R84

The Gold Standard R84
The A840 delivers the same  award-winning sound as its passive sibling, the R84. Its higher output  and immunity to impedance-loading offer more flexibility in the choice  of preamps, and avoid noise problems in low signal level applications.  Touring musicians who are looking for consistent and risk-free  performance in a wide range of venues and recording setups will find a  trusty companion in the A840 microphone. The A840 remedies most of the  limitations of passive ribbon microphones, whether in a remote recording  situation with long cable runs, a classical music application, or  simply for the wish to combine the ribbon sound with a low-gain vintage  preamp. The signal strength and flexibility of active JFET electronics  combined with the luxurious warmth of a Big Ribbon™ all wrapped up in an  affordable package is what sets this microphone apart. No studio is  complete without a pair of A840s.

Classic Sound Meets Cutting Edge Technology
Building on the  success of the R84 and the legacy of the RCA designs, the A840 marks the  next step in incorporating the same modern JFET electronics and high  performance transformer as used in AEA’s flagship active microphone, the  A440. Back in the RCA days, ribbon microphones were always passive  transducers. With the invention of transistors and the subsequent  reduction in size of electronic components, it has become possible to  use ribbon mics in even more applications. A passive ribbon microphone  needs to be matched with a high gain, high impedance preamp, like AEA’s  TRP or RPQ, to achieve its best performance. Phantom-powered, or active,  ribbon microphones like the A840 can be used with a wider range of  preamps, including those commonly found in USB or Firewire audio  interfaces. Does this mean that passive ribbons are an obsolete relic of  the past? Absolutely not: Passive ribbon microphones still have an edge  when it comes to maximum signal level (165 dBSPL instead of 134 dBSPL),  the more minimalist signal path, and lower cost.

A Big Ribbon for a Big Sound
The AEA A840 uses a big, 2.35"  by 0.185" by 2 micron pure aluminum low-tension ribbon element just like  the classic R44. Many ribbon mic manufacturers choose shorter ribbons  that are easier to install, but AEA’s Large Ribbon Geometry TM design  offers important advantages. Ribbon microphones operate linearly above  their resonant frequency, unlike condenser or moving-coil transducers,  so the resonant frequency of a good microphone design should be as low  as possible. The longer the ribbon, the lower the resonant frequency  will be. The ribbon has to move twice as far for every drop in octave as  it vibrates within the magnetic gap,  thus a longer ribbon will allow  for further movement back and forth. This results in the ribbon handling  louder sound sources and more sound pressure level (SPL). Most AEA  ribbons are tuned to 16.5 Hz, and because the A840 shares the same Big  Ribbon™ as the rest of AEA's product line, you will achieve a sound that  is smooth, natural and free from any of the uncomfortable resonances  that shorter ribbons and condensers can exhibit. The result is a sound  that many engineers say is astonishingly close to what their ears hear  when you're actually standing in the studio.
 
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