Where should I place my listening position in a rectangular room?

Enter your room dimensions. The tool calculates the 38 percent rule position from the front wall, sets an equilateral speaker triangle, and shows toe-in angles for a sensible starting layout.

How do I find room modes for my studio?

The axial room mode table shows the first three modes for length, width, and height based on your dimensions. Check whether any modes stack up or leave gaps in the low end.

Where should a subwoofer go in a small room?

The tool suggests a starting position based on your monitoring system. With a sub the 38 percent rule still applies to the mains, but the sub often works best off-center along the front wall or at the listening position when doing a crawl test.

Studio utility

Room Placement and Listening Position Helper

Use the 38% rule, an equilateral monitor triangle, and first-mode estimates to set a sensible starting layout before you measure the room properly.

Room unit

Room length

Room width

Room height

Desk depth

Monitoring system

38% listening position

Speaker triangle side

Toe-in

Sub starting position

Axis	Fundamental mode

How the math works

The 38% rule places the listening position at thirty-eight percent of room length from the front wall. Axial room modes use speed of sound divided by twice each room dimension.

When you would use it

Work out where to place a desk before you start hanging treatment.
Estimate which room dimensions will create the lowest problem resonances.
Set a first-pass subwoofer position before you do a crawl or measurement sweep.

These are evidence-based starting points for rectangular rooms, not guaranteed final answers.

FAQ

Why 38% of the room length?

It is a widely used starting point that tends to avoid the worst bass buildup zones.

Why show room modes?

They tell you where low-frequency buildup is likely to be strongest.

Can this replace room measurement software?

No. It helps you start in a smarter place before measuring.