Actually surprised with the results of fir filters in A8.it is fast and easy. I only applied fir 20 to 400 hz.It is really great. The bass is punchy now without boom.I used umik1 and 90 deg calibration file. Thanks eversolo. A small suggestion would be it would be great if atleast 3 position instead of only one position. Then it can cover whole sofa. Could be something to consider for next improvement.