Thanks, I thought of that and also looking at somehow attaching them to the seat back - however, after another hour or so's playing around, at the moment I would not be able to justify it.
I have the Masters 2011, Renault 3.5 and 60's mods installed. The 60's mod seems to be more tolerant than the other two, insofar that the other two (which I believe are based on one another) give problems. On all of them, if there are any surround sound effects, they are nigh on impossible to detect.
I have stolen my wife's logitech 5.1 system, which combined with what was already on the rig gives me a 7.1 setup. With the SoundMax control panel, I have deliberately upped the rear speaker volumes to accentuate any effects. I made sure all the speakers were working, then left the settings on 7.1.
The various settings in game are:
Windows setup - didn't work at all
4.0 - very poor, the volume of the fronts would go up and down at random, and the rears would cut out intermittently
5.1 - all speakers defined as 5.1 working, however no different sounds from the rears to the fronts
7.1 - as above, there didn't seem to be any sound from the 'side' speakers
SRS circle surround - didn't work at all
However one thing stood out above all else; when I lock the front brakes, there is no tyre screech. When I spin the rear tyres, there is no wheelspin sound. When I understeer into a corner, there are no scrubbing sounds. Even in 'stereo speaker' mode, as the front wheels lock, there is total silence.
I sat the car on the side of the track, and then let cars go past me. There was more sound from the front speakers as the car approached than the rears, so it would sound like the car was approaching me from in front, then turning around and going away again - and this is with the rear speakers turned right up!
So, all in all not a very good start. I'm open to suggestions for this, but am very puzzled by the very poor implementation so far.