3D Bass Trap and PSI AVAA Room Planner.
Plan studio acoustics in 3D. Enter your room dimensions, pick a bass frequency between 20 and 200 Hz, and see calculated SPL pressure zones, speaker wall vectors, listening position vectors, and recommended placements for bass traps and PSI AVAA active bass absorbers.
Best viewed full-screen on mobile.
Tip: rotate with Top, Iso, Front, Side. Toggle red SPL bubbles, heat dots, speaker vectors, LP vectors and labels at the top of the planner.
What the planner calculates.
Room modes
Axial, tangential and oblique modes derived from your length, width and height.
SPL pressure zones
Red bubbles mark the highest pressure regions for the selected bass frequency.
Speaker and LP vectors
Cyan speaker to wall vectors and green speaker to listening position vectors.
AVAA placement
PSI AVAA units snap to the highest pressure bubbles first, then to secondary tie-breaks.
A planning aid, not a measurement.
This tool models pressure zones from rectangular room geometry and modal formulas. It is excellent for early planning, treatment positioning and making sense of where low-end energy collects. For a finished room, in-room measurement with REW or a similar tool remains the reference. If you want help interpreting either the planner or your measurements, get in touch.
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FAQ
What does the planner do?
It models your room in 3D, calculates bass pressure zones for a chosen frequency between 20 and 200 Hz, shows speaker wall vectors and listening position vectors, and recommends positions for bass traps and PSI AVAA active bass absorbers.
Is it free?
Yes. It runs entirely in your browser. No signup required.
Does it replace acoustic measurement?
No. It is a planning aid. For a finished room, measurement with REW or similar remains the source of truth.
Why focus on PSI AVAA?
AVAA active bass absorbers solve specific low-frequency problems that passive traps struggle with, especially in small rooms. The planner places them where they do the most work.