B&W Matrix 802 series 2 vs series 3 vs ATC SCM40

Series 3...Considerably better from what I heard///Had both.....If I remmember correctly the Series 3 had the IPOC system removed and was a cleaner more refined sound..The 3 also had better bass attack...Going from memory here..

I am not totally positive but I think both the Matrix 801 and 802 series 2 both had the IPOC circuitry..From what I can remember the biggest improvement ( in stock form ) in the Series 3 came from the removal of the IPOC circuit..I think they removed the IPOC in the Anniversary Edition which was in between the Series 2 and 3....
B&W also may have made a change in the bass drivers in the Series 3 802.. Check with B&W for the IPOC info to find out for sure.......You may also find out that most Matrix 801 and 802 owners thought the B&W bass alignment filter was garbage..I tried it once and removed it and found they sounded much better without the B&W filter..( my taste anyways ) ....