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

This is an old thread by now. Did you get the speakers of your choice. I can say I have the Matrix802s3 and very happy I rebuilt the Xovers . Bass and slam is there with a very deep and wide soundstage. use SS amp and Tube pre. very exciting sound never happier. Sounds better than 85% of the systems at AXPONA last month.

My 802 series 1 bass alignment filter went tits-up last year. I had previously replaced a handful of resistors and electrolytics but heat ultimately cooked the board. I can no longer read the op amp part numbers, and don't have a schematic.

I always loved the sound of the 802 S1's on classic prog rock and traditional/bebop jazz. Driven with a good vinyl front end and Aragon 4004MK2, plenty of slam when called upon.

I liked the bass better with the filter installed; I miss it. I am an electronics engineer and am quite willing to build my own. Any information would be very welcome. The approach taken by Arupg sounds like right up my alley. pdbrooks0@gmail.com

Anyone have information about whom may be doing crossover upgrades for this speaker?