Monitor Room Treatment

The room decides what you hear first; absorption and diffusion follow the problem, not the wall area.

Related

Room TreatmentNearfield MonitorMonitoring

The problem

The same mix sounds different in different rooms, and the cause is usually the room rather than the monitors. Low end piles up in corners and against the rear wall, early reflections from side walls and ceiling widen and blur the image, and glass with hard floors brightens the top. Treating a room is not about covering walls with foam but about finding which band and which reflection causes the trouble.

How it works

Absorbers work over a band set by their thickness, so thin foam only handles highs while lows need thick panels or air gaps. Diffusers scatter reflections, reducing comb filtering and colouration while keeping the room feeling alive. Low-frequency standing waves follow room dimensions and need bass trapping and placement, not thin material. Listening positions should avoid the middle and quarter points of the room length, where modes are strongest.

Settings and practice

Treat first reflection points first: side walls, ceiling and the wall behind the monitors. Use corner bass traps for low end instead of stacking thin foam. Put diffusion on the rear wall to break up late returning energy. Deal with the desk's front edge, which directly blurs the midrange. Calibrate monitors and listening position after treatment, and consider EQ correction last. Do not over-absorb; a room that is too dry makes mixes sound bright elsewhere.

What to listen for

On the funk kit, whether hits still separate; on the Debussy double stops, whether two lines stay distinct; on the organ, whether certain pitches suddenly thicken. Room problems usually appear as one booming note or an image that leans to one side.

Sources

• 吸声与扩散的频率特性，依声学公开资料核对，未抄原文
• 监听位置与反射点的关系，依录音室设计通识核对，未抄文本

Used for fact-checking only; all prose is original.