Hi Chaps, I have a Yamaha DSP-A5 and have been wrestling with bass issues for some time. After trying all sorts of different settings and tricks off of this forum I have come to the conclusion that the bass management in my Yamaha amp is not behaving as it should. If I have all speakers set to small and bass to Sub via line level I can get a pretty decent bass response. When I switch from 5.1 to stereo there is WAY TOO MUCH bass going to the sub. If I switch to Pro-Logic there isn't enough bass going to the sub. This all adds up to me riding the SW level every time I change listening mode. - Annoying and easy to forget to change it back. I have done some careful listening and this is what I have found: If I change my ANY speaker from small to large the output to the sub INCREASES. If I change it back the level sent to the sub decreases. This is contrary to what I would have expected bass mangement to do. I had hoped to set my mains to large (using hi-level connection to sub for their lo bass) all others to small, LFE to sub. The problem with this is that any redirected bass (from center and surrounds) is increased in volume relative to the DD and DTS LFE level to the point where I can't get the dedicated LFE loud enough. This works OK for stereo and Pro Logic. It even sort of works for DD and DTS - except that the dedicated LFE cannot be brought up to the correct level. Has anyone encountered this problem with a Yamaha amp before... Is any of the above clear? Or am I doing something fundamentally wrong?