3. Do not expose the microphone to liquids or caustic smoke.
4. Do not expose the microphone to strong alternating electro-
magnetic fields, i.e. the power transformers in amps, or a hum
may result.
5. Use a soft cloth to clean the microphone body. A small
amount of denatured alcohol can be used to remove fingerprints
and other stains.
6. Keep metal filings away from the microphone at all times.
7. When not in use, store the microphone in its protective
wooden case.
8. Leave disassembly of the microphone to a trained technician.
There are no user-serviceable parts inside.
Caution!
Keep recorded tapes, spring-wound watches, and personal credit
cards using magnetic coding away from the microphone to pre-
vent possible damage caused by the transducer’s powerful mag-
nets.
A Little Bit of History
The ribbon-velocity microphone design first gained popularity in
the early 1930s and remained the industry standard for many
years. Their characteristic sound signature can still be appreciated
today in recordings of the 30s, 40s, 50s and early 60s.
Ribbon microphone development reached its pinnacle during this
time. Though they were popular with announcers, one of the dis-
advantages of ribbon microphones was their immense size. Even
though these devices were considered state-of-the-art, magnetic
structures of the time were bulky and inefficient. Transformers
suffered a similar deficiency. When television gained popularity
in the late 1940s, it was obvious that their size was intrusive and
objectionable. They were difficult to maneuver and broadcasters
soon looked for a suitable replacement. Even though these micro-
22
Summary of Contents for R-122
Page 28: ...Notes 27 ...
