I honestly don't know, and it hurts my head too much to try to think of them all....
lets see, 7 in the basement ht..Salk sound and Selah(plus 2 SVS subs), plus 2 norh column 9.0 marble in the game room (plus norh sub), 2 in the billiards room, Sansui XP9900, 2 on my computer (monsoon) plus a sub, 2 in storage.
2 outside, 5 in the family room, norh 4.0's marble (plus sub)
3 in my bedroom, norh prism, 2 in son #2, norh marble (plus sub), 2 in daughters, norh 9.0's, 4 plus sub in son #1's, Sansui XP-6900, monsoon, 2 in office, norh column 9.0.
that would be:
7+2+2+2+2 +2+5+3+2+2+4+2 (plus subs) +35 plus subs (7) = 42 if I haven't forgotten any