The Advanced Audio CM47ve is a large dual-diaphragm, multi-pattern, tube condenser microphone inspired by the famous Neumann U-47. The CM47ve is a great choice for vocals, horns, acoustic instruments, and excels in front of bass and guitar amps. The CM47ve provides response within +or - 1.5dB of a U47 microphone made after 1958.
Dan Wilson using the CM47ve on acoustic guitar.
The circuit is based on the very hifi 6072 tube optimized with a state of the art two-stage Class "A" CCDA design.
This circuit provides a much lower output impedance with more headroom than the circuit used in the original U47. The lower output impedance provides a faster damping factor when driving the BV8 type transformer, delivering a better transient response than the original design.
Selected 6072a tubes are some of the quietest tubes made, and are much less susceptible to microphonics than the metal-clad vf14 tubes used in the original U47 tube microphone.
The dual-bobbin output transformer with its hum bucking configuration and our optimized circuit will deliver > +14dBu with less than 1% distortion.
The output transformer is driven with a 2.2 ufd metal-film capacitor to take advantage of the transformer’s response down below 20Hz.
Click here for the response curves.
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