Trader advert from July 1951 shows two classic microphones with quite
in-depth technical data.
high fidelity Microphones
For Public Address : Recording : Amateur Radio
Type MIC 22. This
model incorporates the famous Acos "Filtercel" insert giving
extreme sensitivity and high fidelity. Response is substantially
flat from 40 - 6,000 cps. The microphone is vibration and shock
proof and is not affected by low frequency wind noise. Two
alternative mountings are available for the MIC 22 head. MIC 22-2
is supplied as a complete unit incorporating an attractive desk stand with
cable side entry. MIC 22-1 is for fitting to any British or
American-type standard floor stand and can also be used as a hand
microphone. Price £6-6-0 (Either model).
Type MIC 16.
Incorporates the Acos Floating Crystal Sound Cell giving a response
substantially flat from 30 - 10,000 cps. Performance is unaffected
by vibration or shock or low frequency wind noise. As in the case of
the MIC 22 two alternative mountings for the MIC 16 are available:- MIC
16-2 is a complete desk stand unit with side entry. MIC 16-1
is ready for fixing to either British or American-type floor stands by
means of a knurled ring. Price £12-12-0 (Either model).
Cosmocord Limited, Enfield,