This is an article about how to date music records. A member of the community “Audiogon” asks how to find the age of a recently purchased LP record, as the purchased record had no date on it. The rest of the article is a list of replies from various community members on how to determine the age of a record that has no date on it.
Read the full article here:
Advice on Dating Records.
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?