> I use the Sennheiser HD 280. They are very good cans that are mostly used by
> DJ's because they are closed circumaural headphones with 32db reduction of
> external noise. I find that when I use these cans for sound recordings that I
> ask myself repeatedly "did that sound just come from outside the
> headphones?", yet, it hasn't. They isolate so well that everything you hear
> comes through the microphones, the recorder and the headphones.
That 32dB figure is misleading. Probably true for like 8KHz but much less lower
down. I know because I bought that model for a scientific experiment where
people were listening to natural environments at calibrated natural levels, in
a closet with activities going on outside. Simply not adequate, and I had to
eat crow. I went for the airport-worker type isolators modified with headphone
drivers and those did the trick. I'm not being coy about the name, no internet
on this airplane. I think they were Superphones or something like that.
-Dan
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