>’Bob Heil got that part right.? "It's no more than a 50 cent speaker....in a $50.00? box".’

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I don’t think the issue is so much the MS4 speaker cone or magnet.? There’s essentially no baffle distance at even moderately low frequencies between the front and back of the cone.? ?That means the forward cone wave short circuits the back wave at those frequencies.? And by moderate, I don’t mean Hi-Fi in any way; that requires even more baffle distance or a fully enclosed “infinite baffle.”?

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I’ve closed the back of mine with cardboard and that helps to create a fuller sound from the MS4.? Back in the day, manufacturers that offered speakers as accessories to the main product line put no effort into understanding the effect of baffling.? ?

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Paul, W9AC