Free Acoustic and Speaker Placement Calculators
Online calculators for room modes, reverberation time, first reflections, speaker placement, subwoofer positioning and amplifier power. Free, no sign-up required.
Objective Tune — Audyssey
Upload your Audyssey MultEQ Editor file (.ady): main-seat EQ correction for every channel (crossovers, distances and subwoofer settings stay as Audyssey set them) and 4 corrected…
Open calculator →REW Measurement Analysis
Upload your REW measurement (.mdat): level, timing, room modes, SBIR, early reflections, RT60, waterfall and subwoofer analysis with recommendations. First report free for our…
Open calculator →Room Mode (Room Modes) Calculator
Calculates and displays in 3D axial, tangential, and oblique room modes (resonance frequencies) based on your room dimensions.
Open calculator →RT60 and Acoustic Panel Requirement Calculator
Calculates your room's reverberation time (RT60) using the Sabine formula and shows how many m² of acoustic panels you need to reach your target.
Open calculator →First Reflection Point Calculator
Calculates first reflection points on side walls, ceiling and floor; shows the exact placement of acoustic panels.
Open calculator →SBIR Simulator (Speaker Boundary Interference Response)
Calculates cancellation (null) and reinforcement peak frequencies resulting from speaker distance to rear and side walls, displays in 3D.
Open calculator →Home Cinema Speaker Placement Calculator
Calculates speaker angles and positions for your room for Dolby Atmos configurations from 5.1 to 9.1.6.
Open calculator →Golden Ratio Speaker Placement
Provides ideal coordinates for stereo speakers and listening position according to the Cardas golden ratio method.
Open calculator →Speaker Angle Calculator
Calculate speaker angles relative to your listening position from your measurements; compare with ITU-R BS.775 recommendations.
Open calculator →Soundstage Depth and Phantom Center Calculator
Evaluates stereo soundstage width, phantom center channel stability, and listening triangle.
Open calculator →Ideal Subwoofer Placement
Calculates the placement that best balances room modes for one, two or four subwoofers; try it by dragging the subwoofers.
Open calculator →Subwoofer Placement Finder Tool (Subwoofer Crawl)
Find the best location for your subwoofer step by step using the "subwoofer crawl" method if you don't have measurement equipment.
Open calculator →Required Power (Watt) Calculator
Calculates the amplifier power you will need without clipping based on speaker sensitivity, listening distance, and target sound pressure level.
Open calculator →Sound Wavelength Calculator
Calculates wavelength from frequency (and vice versa); used for quarter wavelength and SBIR (speaker boundary interference response) distances.
Open calculator →Sound Propagation Time (Delay) Calculator
Calculates the time it takes for sound to reach a given distance in milliseconds; for speaker and subwoofer delay adjustment.
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