 |
The CM-47 is a large
dual diaphragm, multi-pattern, tube condenser microphone based on the famous
Neumann U-47 design and specifications.
The Advanced Audio CM-47 features a very accurate yet smooth AK47 capsule. The AK47 is a 35mm capsule with 6
micron thick German mylar diaphragms. This capsule has a frequency response
within 2 db of the Neumann K47 mylar capsules used in all U47 tube microphones
built after 1961.
The 6072 tube circuit has an optimized 2-stage class A design that provides a
lower output impedance with more headroom than the circuit used in the original
U47. The lower output impedance provides a fast damping factor when driving the
BV8 type transformer.
This dual bobbin output transformer with it hum bucking feature and our
optimized circuit will deliver +20dbu with less than 1% distortion. The output
transformer is driven with a 2.2 ufd metal film capacitor to take advantage of
the transformers response down to 10hz.
Selected 6072a tubes are some of the quietest tubes made and much less
susceptible to microphonics than the metal clad vf14 tubes used in the
original U47 tube microphone.
Specifications:
1.07 dual diaphragm
AK47 capsule: 6 micron German Mylar
25hz to 20khz + or 3db
9-selectable pick-up patterns
-17db(A weight) noise
<200 ohm Impedance
.5% distortion @ 125db
Class A 6072 tube circuit
BV8 type output transformer
Robust shock-mount
Aluminum road case
|
|
CM-47: $735.00
AK67 capsule.
Shipping USA & Canada: $30.00 |
CM-47SE: $935.00
AK47 capsule.
Shipping USA & Canada: $30.00 |
We will install boutique capsules from Peluso, Tim Cambell, Beez Neez, Thiersch Elektroakustik or another, please contact us for more details.
|
|
