[dano1122]

on my ADS instant music in the windows volume control panel i can only select playback for volume adjustments. the recording ticker is not selectable. i'm guessing that the line-in matches with the input volume control in REW which is also greyed out and not selectable in REW for me. in the REW help files under checking levels it mentions that, "Some soundcards do not provide an input volume control (e.g. some USB cards). As long as the signal RMS level is within the -30 to -12dB range when the speaker/subwoofer cal signal is playing everything should work OK. If the level is below -30dB try reducing the meter range to raise the level, but be careful not to reduce the range to the point the meter is overloaded. If the level is above -12dB try increasing the meter range to lower the level."

btw, why does the graph dip and then rise so much after 80Hz if that is my crossover point? I only have the sub connected.