I have owned the B&W 802 Diamonds for about 6 months now. They are driven by a pair of 400W Parasound JC1 monoblocks.
My dedicated listening area is not all that large 12'x16'x9'high. Initially I did have issues with bass. You can move them out further from the back wall or get a pair of corner bass traps as I did because of room size constraints. I also treated the side walls with acoustical panels especially the first reflection point and this made a world of difference. With the treatments there is no heavy bass. The bass sounds tight and appropriate with no boom. I am very pleased with their sound. So much so that I have left them on the glider wheels on the bottom and not spiked them up for easier access to the gear rack.
My dedicated listening area is not all that large 12'x16'x9'high. Initially I did have issues with bass. You can move them out further from the back wall or get a pair of corner bass traps as I did because of room size constraints. I also treated the side walls with acoustical panels especially the first reflection point and this made a world of difference. With the treatments there is no heavy bass. The bass sounds tight and appropriate with no boom. I am very pleased with their sound. So much so that I have left them on the glider wheels on the bottom and not spiked them up for easier access to the gear rack.