John. I noticed that as well. If you read through the thread at all (its quite interesting after you wade through the troll droppings) he acknowledges that his room has one mode below 50 Hz, but still sticks by his original asertion.

His point is that, compared to the 50-150 range(where there are increasingly more), there are none.

Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!