[Les Cargill]

Roy W. Rising wrote:

"Mike Rivers" wrote:

On Feb 25, 1:12 pm, Roy W. Rising wrote:


The relationship you mention is "Let the product of the LF and HF -3dB
frequencies equal 600,000". Familiar examples are 30-20,000Hz;

Oh, well, there goes 50 years of "20 to 20,000 cycles" shot to hell.


There's not much music below 30 Hz, only a few pipe organs.


That is not true. There are kick drums and electric bass
guitars, electronic synthesizers and all manner of stuff between say,
100 Hz and 30 Hz.

snip

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Les Cargill