CM47ve

Description

Advanced Audio CM47ve

The Advanced Audio CM47ve is a large dual-diaphragm, multi-pattern, tube condenser microphone inspired by the famous U47. The CM47ve is a great choice for vocals, saxophones, 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.

Capsule:

Our Advanced Audio CM47ve features our AK47 capsule. The AK47 is an exact reproduction of the K47. The AK47 is a 32mm capsule with single back-plate, random drill pattern and is skinned with 6 micron mylar. The CM47ve yields a more vintage, ‘darker’ response curve than our CM47 above 10kHz but has a very present sound with a slightly wider proximity effect than the CM47.

Circuit:

The circuit is based on the very hifi 6072 tube optimized with a two-stage Class A 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 +20dBu 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 to 10Hz.

 

Specifications:

•  1.0” (32mm) Ak47 single back plate, 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: 20Hz to 20kHz +/–3dB

• Noise: <15dB (A-weighted)
• Impedance: < 200 ohm (load impedance <1.2K)
• Distortion: < 0.5% @128dB
• Maximum Output: > +14dBu with less than 1% distortion
• Robust shock mount that threads onto microphone body
• Flight case.

The CM47ve is simply put, the ‘vintage edition’. No better, or worse then the CM47, just different. The CM47 is our take on the U47 but with added upper mids which cut through in a modern mix which is often bright with lots of tracks .

The CM47ve (vintage edition) is the recreation and closest to the original. It is our ‘darkest’ sounding tube microphone, and it gives you that real vintage sound!

Please do not hesitate to contact us if you have any questions – Let us help you capture your sound signature in its fullest detail.