Everyone, Thank you so much for the help. I have Barbara's book but had no idea where to start looking. I've learned with EQ how to break down how a block is constructed but this one had me fooled for a while till I turned the picture sideways then I could see the segments and how the above graph looks just like the block. To me when the block is turned on angle like in the picture, it looks like a cross to me. Take care, Chris