I will answer a bunch of questions here. Hopefully I didn't miss any.

The M5 does fit on the FMS stand but we did modify the top plate to make it more centred on the stand. I would suggest getting new top plates for you stands. The will cost $39 each.

The sensitivity delta is not that great between the QS10 and QS8. We have changed the spec on the QS8 as it was out by 2dB. I am also going to try to get the sensitivity of the QS10 up a dB or two before we start shipping. So it will end up between 2 and 4 dB less efficient. Going after bass generally reduces the sensitivity.

The wall mount bracket for the QS10 is the same Power Bracket as the QS8. Just lift off the QS8 and put on the QS10.

As mentioned by Exlabdriver and Alan the difference between M22s with a subwoofer and the M5 are largely mitigated, especially if the crossover point is quite high (120 - 150 Hz). But in a lot of 2-channel systems the "satellite" speakers are running full range even if there is a sub in the system. Here the M5 will be able play much louder as there is no strain of bass being put on the 5.25" driver(s).

The M5 5.25" driver is in its own little enclosure which both separates the back waves in the cabinet and acts like a natural high-pass filter.

It is nice if you can be a foot or more from the back wall but we do have port plugs available if you need to be very close to the wall. This only applies to the bookshelf version as the in-wall and on-wall use the boundary affect in their design.

Ian Colquhoun
President & Chief Engineer