been away so long on a journey.. but now i am back.. here is the response from above question: Linnie01.. i listen mostly on CD but going crazy collecting LP, Lokie.. my room size is 4*5.5 meter and the screen size is 92 inch diagonal.. the blue celing is painted on purpose from my friend recommendation to eliminate light reflection from the projector in the dark. also i do have a fiber optics star system and LED lighting in the room when it gets dark., Htong... i used to have subwoofer for my HT application but my Cerwin vega 15 inch woofer has already have enough bass so i took the 18 inch subwoofer out from the room.. cheers