My system is a Denon AVR 2600 7.2. I have Heresy 2s all the way around but I'm seeking advice on height speakers (I have two sets of excellent smaller speakers I'd like to use rather than buy a third!) For height speakers, I'm currently using a pair of Mirage OMD5 omnipolar speakers which don't sound bad but the timber isn't quite right. I also have a set of Klipsch R-51M bookshelf which are a much better match but aren't made for wall mounting. Is it possible to wall mount R-51Ms? Thank You!