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Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. Due to the special nature of this item, we order each unit fresh from the factory, exclusively for you! Lead times may vary so please chat, call or email for up-to-date inventory status.

SKU

141356

Advanced Audio CM47 Tube Condenser Microphone

Large dual-diaphragm, multi-pattern, tube condenser microphone inspired by the famous Neumann U-47 - great choice for vocals, horns, acoustic instruments, and more
MFR# CM47

Product Description

The Advanced Audio CM47 is a large dual-diaphragm, multi-pattern, tube condenser microphone inspired by the famous Neumann U-47. The CM47 is a great choice for vocals, saxophones, acoustic instruments, and excels in front of bass and guitar amps.

The Advanced Audio CM47 features our very accurate and smooth AK67 capsule, a 35mm capsule with 6-micron-thick German mylar diaphragms. Its frequency response falls between those of the U47 and U67 vintage tube microphones. The AK67 capsule goes down another ½ octave before rolling out, compared to the K47 capsule. The CM47 also has more “air” or “sizzle” above 10 kHz, allowing it to cut more easily through busy mixes without the addition of EQ.

The circuit is designed around the very HiFi 6072 tube and optimized with a two-stage Class A CCDA circuit. This circuit provides a much lower output impedance with more headroom than the original 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 >+14 dBu 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 20 Hz.

FEATURES:

  • 1.07” (35mm) AK67 dual back plate, dual 6-micron skinned mylar capsule Capsule polarization 60V on the back-plate
  • 9 selectable pickup patterns remotely switched from the power supply
  • Dual bobbin BV8 (6.5:1 ratio) output transformer
  • Selected 6072a tube Class A dual stage (CCDA)
  • Frequency response: 20 Hz to 20 kHz ±3 dB
  • Noise: <15 dB (A-weighted)
  • Impedance: <200 ohm (load impedance <1.2K)
  • Distortion: <0.5% @128 dB
  • Maximum Output: >+14 dBu with less than 1% distortion
  • Robust shock mount that threads onto microphone body
  • Flight case

Product Specifications

Condition New
Package Contents CM47 mic, shock mount, and aluminum road case
Tube or Solid State Tube
Transducer Type Condenser
Polar Pattern Variable-Pattern
Number of Microphones Single Microphone
Impedance <200 Ohms (load impedance <1.2 kOhms)
Frequency Range 20 Hz - 20 kHz (±3 dB)

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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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