Thanks guys, appreciate the feedback. The rear corners of the room have 244 panels diagonally across with an air gap. Yes the front have panels against the walls, but as remarked above not much room available and the front corners I cannot place any bass traps as there is a door on the left, and the right has a book shelf. Anyways the most potent weapon in my arsenal is the Luxman CL-38uc preamp, which has tone controls with bass adjustable at 150/300/600 hz. Set at 150 and reduced the bass knob slightly, it works like a charm. Agreed purists may scoff but it works very well indeed.
Cheers,
Sid