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gs5556
1,155 posts
Here’s an analogy. Suppose you have to run 100 feet of hose to a lawn sprinkler from a hose bib. The instructions say to use a 1-inch diameter hose for that length of run in order for the sprinkler to spray the design water pattern. You say that does not make sense because the 2 foot pipe from the water main to the hose bib is only 1/2 inch. The reason is the pressure drop is lower to the hose bib because of the short 2 foot le"ngth. Taking that out 100 feet will reduce the pressure by a factor of 50 and there will not be enough pressure for the sprinkler to work as advertised. To counteract the pressure loss, a larger diameter hose is needed. The hose bib's 1/2 inch pipe is not the weakest link -- it sets the initial condition of water pressure. This is similar for hose bib/amplifier, hose/speaker cable and sprinkler/speaker."
What an excellent analogy!!! Well done!