• Click the arrow on the checklist item, mark the item complete and add any comments or recommendations.
• The ceiling plays a lesser role in changing the nature of the system in most small rooms. It's often acceptable to leave it alone.
• In larger rooms or rooms with tall ceilings, it may be the source of unwanted added reverberation.
• The ceiling and the floor have a similar relationship between each other as do the front and back walls.
• Any room that does not have carpeting, has thin carpeting or only patches of carpeting may benefit from some absorption on the ceiling.
• Diffusion in the rearward area of the ceiling and overhead the listening area can be beneficial.
• If your testing reveals a high Reverberation Time (RT) above 500 ms, adding absorption where possible on any surface may be beneficial.
• If you follow the guidelines here for all surfaces, in a typically sized room, added absorption beyond these recommendations is normally not required and may be detrimental.