I would recommend that people use the Realtraps CD free download, especially for handling bass response. It covers 10hz to 300hz in 1hz increments, a much better representation. Even 5hz increments will not give you an accurate measurement of the peaks/nulls overall. You will be amazed at the difference found in 1 or 2 hz, which will be hidden by some other test cd's.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85