While many of us might look at a horn speaker and think it is some type of antique, there are some very real advantages to using this old technology to amplify music when paired with the right equipment. Audiogon interviews several fans of horn speakers and they agree that, while there are some disadvantages, horns can provide some of the most lifelike amplified sound out there.
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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?