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so we all know what is what, low mid is (150 - 400) versus mid (400 - 1.5k) versus high mid (2k - 5k) or highs (5k up)
road noise is generally low mid and mid, sometimes reaching up into the high mids, depending on the design of the car, with the odd exception of big road grooves and such, which can be down around 100
that rap of the knuckles generally is low mid to mid, depending on the thickness and curvature of the sheet metal, as well as any structures that might contact it
highs are affected by carpet and soft materials like that, but not really altered by the dynamat, as they lack the energy to vibrate the sheet metal anyway
b-quiet is one of the ones i've heard good reports on, and the spec sheets look good
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