The reasons are :

1) my Dynaudio 52 sound very poor backed up against the wall on shelves 2m high, why are they there ? I have a year old son, he is exploring, touching, prodding, pulling over, down and dribbling over things. I don't want 20Kg speakers or anything else to fall on him.

2) I do have a pair of JR149 which sound ok, which may sound better with a sub

3) I'm after exactly what most people on the forum are trying to achieve, realistic and enjoyable reproduction of music. I listen to many types of music. If it can double in av duty as well at a later date, then even better. The priority is 2 channel music.

4) The other alternative is a really big pair of big, floorstanding speakers, may be horns ;-)

Cheers