hi, i have a custom bass with single emg 45 dc in middle position, and it sounds very hi-mid (lacks bottom low). i wonder if i can add the lower freq with adjusting the pickup height. (acoustically the bass sound great). can anyone help me ??? i read on emg instruction note that active pickup should be adjusted as near as possible to the string (and that is exactly what i done), but the as the result i have very mid freq response. what is the propper height for active pickups (in this case EMG pickups) or the EMG just have very mid-ish character ??? any opinion would be greatly appreciated.