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Due to the boutique nature of our microphones, each one spends some time on the bench. We strive to ship within 72 hours of an order being placed.Questions? info@advancedaudio.ca

CM47LE $1,185.75 USD

        ***INTRODUCING THE CM47LE***
The CM47LE SELLS ON-LINE FOR $1395
Introductory price of  $1185.75 usd 
LIMITED QUANTITIES START SHIPPING IMMEDIATELY

THE CM47LE IS A FULL BODY OR LONG BODY VERSION OF THE ORIGINAL U47 CIRCA 1959.
THE CAPSULE, TUBE, TRANSFORMER AND CIRCUITRY ARE BASED ON THE TRADITIONAL SPECIFICATIONS OF A 1959 U47
THE 1959 U47 WAS FITTED WITH THE VENERABLE VF14M TUBE &
K47 CAPSULE WITH A BRASS SURROUND
WITH THE CM47LE YOU GET THE OPTION OF MODERN MULTI-PATTERNS WHILE RETAINING THE TRADITIONAL, PASSIVE-CARDIOD RESPONSE OF THE U47 WITH THE FLIP OF A SWITCH!!
THIS IS ACCOMPLISHED WITH A SWITCH ON THE BODY LABELLED:
 M -  "Multi-Pattern"
      C - "Passive-Cardiod"
In Passive-Cardiod there is 3db more output from the capsule and the self-noise is reduced by 3db compared to active cardiod.
In the "M" switch position, the 9 pattern switch is engaged; Active CARD is in the centre and OMNI is full counter clock-wise while FIG 8 is in the full clock-wise position from the 9 pattern switch located on the power supply.

 The CM47LE features a traditional single stage class "A" transformer coupled U47/U48 tube circuit. 

The military grade 7 pin sub-miniature tube is simple to replace.

  Also, the clever lads at Advanced Audio added a passive cardiod/multi-pattern option.  This allows for 3 patterns between OMNI and Cardiod and 3 patterns between Cardiod and FIG 8.  The traditional passive, cardiod method used in the original U47 is retained in the C position on the CM47LE

Project studios can have a true classic sounding tube microphone for a very affordable price.  Tested replacement tubes will be $21

  The CM47LE is also designed to work seamlessly in any serious commercial recording studio and with a variety of microphone preamps

Circuit:

Like the original circuit designs, we are using a 7-pin military grade pentode tube wired as a triode like the U47 and mounted in a ceramic tube socket.

.  The use of modern, high tolerance components with traditional circuity from the 50's results in a very quiet and very reliable classic performing tube microphone with the extra feature of 9-patterns.

The single class "A" tube circuit stage uses a military GE/JAN 5654W sub-miniature 7 pin tube.  Great care was take to closely match the plate current and output impedance parameters to that of the original VF14 tube found in vintage U47 & U48 microphones. 

       

The custom wound transformer is designed to match the BV08 from a 1959 U47 that was set to s 6.5:1 ratio.

it yields a warm response with a creamy velvet like presence


Capsule:

The CM47LE uses our tried and true, AK47 capsule, the same capsule used in our CM47ve, CM49, CM48fet, CM48T and CM47fet/CE microphones. All Advanced Audio Microphones capsules are hand skinned using 6 micron, gold sputtered mylar. Each capsule goes through rigorous testing in our shop here in Canada.

      

     AA AK47 capsule above

    Below original K47 capsule from 1959

 

    Specifications:

    • Pattern Selector: 9-pattern from power supply
    • Passive Cardiod/Multi-pattern option from body
    • Circuit type: Single stage class "A" tube, transformer coupled
    • Capsule: centre fed AK47 (true K47 reproduction with brass surround)
    • Capsule Polarization: 56V and rear diaphragm 0V in passive-cardioid
    • Tube type: 7-pin socketed military grade selected GE/JAN 5654W
    • Transformer: Full size BV8 dual bobbin footprint with 6.5:1 ratio.
    • Transformer Distortion: <.5%@20Hz/+10dBu and <0.05%@50Hz/+10dBu
    • Max SPL: 138dB
    • Frequency response: 25Hz-20kHz + or - 3db
    • Equivalent Noise Level: <13dB (A- weighted) selected tube
    • S/N Ratio: >86dB (Ref. 1Pa A-weighted)
    • Sensitivity: -32dBu
    • Output impedance <200 ohm (load impedance <1.2K)
    • Output connector: Male XLR, 7-pin gold plated
    • Switchable 120v-220v power supply
    • 25' Gold plated 7 pin cable
    • Heavy Duty shock-mount that easily and tightly clips on to the mic
    • Sturdy travel case 

    The CM47LE comes complete with leather case, wooden box for the microphone, clip on shock-mount,  25' professional microphone cable and vintage style power supply. All with Advanced Audio's 3 year warranty on parts and labor

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