Back in 1988 I bought a brand new Sony Pro Walkman WM-D6C, a cassette
recorder that many field recordists were using at the time.
I also purchased two Olympus Pearlcorder ME9 microphones (omni,
tieclip), and had them wired as a stereo pair, and went off happily
recording sounds all around Australia.
I would like to get a rough idea of the sound quality of the ME9 mics,
compared to the newer Primo EM172 (omni electret) mics that are used
today, by me and many others.
All I have to go on are the ME9 specifications:
Frequency response: 50-13,000Hz
Mike sensitivity: -68dB
(the mics were powered by small mercury batteries).
How can I compare the ME9 specifications with the EM172 mics:
Frequency response: 100-12,000Hz fairly flat, but also may go lower,
and higher up to 20,000 with some drop off.
Mic sensitivity: 14 dB(A) / 38 mV/Pa (as shown on a chart by Rob
Danielson)
i.e. can someone please tell me what -68dB is as millivolts per pascal
(mV/Pa)? Or offer other comments?
Many thanks!
Vicki Powys
Australia
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