Acoustic treatment, i'm still researching unless meron kang suggestion sir... Maliit lang viewing area ko, nakasandal ako sa backwall pag nanonood.. since wala pa ako curtains i can hear a slight echo sa room...
To kill echo, you need absorbers like heavy drapes, carpet, furniture with cloth upholstery, etc. Gawin mong gradual. Kung may plano ka nang maglagay ng curtain, yun muna gawin mo at pakinggan mo. Kung may echo pa rin, dagdag ka ng iba namang absorber.
Actually, kung nakasandal ka sa wall habang nanonood, the problem will be the bass. The bass will be bloated. Better if you can move forward even slightly away from the wall. Also, try to install some bass traps sa corners, kung pwede lang.