[The Pook]

SB-A10
8 ohms
100W RMS, 200W max
91dB/W

Yamaha HTR-6230B
100W RMS @ ohms

If the receiver can ACTUALLY put out 100W RMS (they're usually over spec'd) then look at the Mica RB42 but they're inefficient @ 83 dB/W. If your receiver doesn't put out 100w it's going to struggle to drive them very loud.

The Neumi BS5 are worth a look too, they're cheaper and more efficient/easy to drive but they're larger.