[rlammi]

Thanks Thomasw ,how do you know were to put the filters? Yours is an example is it close enough for me to use or would I need something different ? and I don't know if you have seen my first graph ,but it almost takes all 12 filters in reqw .Would adding the shelving filter cut down the number of filters I would need in the ower frequencies ? If I am reading this type of filter it will bring the lower frequencies down so there should be less filters needed .I will try and rerun it tonight and input the filters and try and take another reading and post it so everyone can see .Thanks all ,Ron.