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Altec Lansing 21B
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Number of Tubes

Valves / Tubes

Main principle

Power type and voltage
Powered by external power supply or a main unit.

Model: Miniature Condenser Microphone 21B - Altec Lansing Corp.; Oklahoma

Dimensions (WHD)
30 x 30 x 220 mm / 1.2 x 1.2 x 8.7 inch

Altec Miniature Condenser Microphone 21B, "Coke Bottle" omnidirectional microphone, part of the Altec M11 Microphone Systems.

Needs Altec power supply P518A or P519A.

Net weight (2.2 lb = 1 kg)
0.166 kg / 0 lb 5.9 oz (0.366 lb)


Outdated Microphones?

Altec 21B Synchron S-10 Sony ECM 22p 20 years from now 95% of all the current Chinese condensers.

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King Studios in Cincinnati - any additional information?

I believe it's the Altec 21b "Coke Bottle" mic, although I'm not 100% sure. Of course, now I want one just in case it was the mic they used on the "Funky Drummer" session. The gear lust never ends... :facepalm:

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Interview with Bruce Swedien

...position the microphone capsule right under the fingerboard of the Bass. Wow what a sound!!! The 21b was one of the only American-made super high quality condenser mics. So why, since you seem to like them so much, do you not use them anymore? What do you use now, instead? - Rascal Audio I LOVE MY...

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