STC 4021 (Apple & Biscuit) 1935-1950s One of my all time favourite mics!

Through my Focusrite Twintrack the STC4021 sounds absolutely gorgeous on acoustic guitar, cello,and flute. Due to its spherical shape the frequency response is extremely uniform from any angle (.Tech Spec STC4021 )  As a drum ambient mic (up in the air over the drummer’s right shoulder) gives a big punchy sound with loads of bottom end weight and smooth silky cymbals.. Not what you would expect from a mic designed in 1935!
Certainly begs the question ‘Has microphone design improved much in the last 75years?’ !!!!!

stc-socket-closeup

A number of people have asked me about the wiring of this mic. Pin 1 is hot (ie pin 2 on an XLR)  G is  earth (pin 1 on an XLR) and pin 2 is cold (pin 3 on an an XLR)

 

Here is  my very first YouTube video which just happens to be about this mic!

 

UNCANNY RESEMBLANCE!!!

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5 responses to “STC 4021 (Apple & Biscuit) 1935-1950s One of my all time favourite mics!

  1. Excellent blog!
    Slightly disappointed not to see any Reslos or a Unidyne B – my personal favourites, and are there any with built in autotune yet?

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  2. Pingback: Vitavox Admiralty Pattern No1359 (1944 D-Day) | Martin Mitchell's Microphones

  3. The apple and biscuit was also known within the BBC as a “thistle” in fact the numerous cables terminating in the 3 pin STC connector were known as “thistle cables” even though they were more commonly used for 4037s 4033s and 4038s. I have not seen any reference to this on the ‘net.

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    • Thanks for this comment John. Since posting my piece on the 4021 three years ago several retired BBC staff have mentioned this. It seems that the ‘thistle’ nickname was widely used, as was ‘thistle cable’ for the leads. I wondered if the different names were used in different BBC regions?
      Sometime soon I will produce another post including the 4021 and will make a point of mentioning this.

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  4. Pingback: How to get that Vintage Mono Sound. A 1930’s Microphone Shoot-out! | Martin Mitchell's Microphones

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