Tools

Broadside Subwoofer Array Calculator

Apologies, this is a cr4ppy experience on mobile currently..

Enclosure Settings

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Sub Type
Orientation
Symmetry
Left Side
Sub 1
Sub 2
Sub 3
Centre Stack
Sub 1
Sub 2
Sub 3

Array Configuration

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Blocks
Subs/Block
Coverage
°
Array Length
m
Control Freq64.9 Hz
-6dB Ctrl Freq

Results

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Array Length17.50m
Blocks × Subs7 × 3 = 21
Spacing (E-to-E)0.99m
Spacing (C-to-C)2.64m

Compromise-o-meter

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0%25%50%75%100%0dB-3dB-6dB-9dB-12dB0°30°60°90°120°150°180°Coverage AngleIntegrityAttenuation

Array Layout

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12.2m18.3mL3-1L3-2L3-3L2-1L2-2L2-3L1-1L1-2L1-3C-1C-2C-3R1-1R1-2R1-3R2-1R2-2R2-3R3-1R3-2R3-317.50m2.64m

Polar Response

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0°30°60°90°120°150°180°210°240°270°300°330°0-6-12-18
31.5
40
50
63
80
100
125

Polar Magnitude

Spectral Coherence: 86%

Temporal Smear

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0°30°60°90°120°150°180°210°240°270°300°330°12
31.5
40
50
63
80
100
125

Temporal Smear (Bullk energy / Cycle)

Integrity: 68%

On-Axis Attenuation

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0-3-6-9-12dB (rel. to baseline)-3.231.5-4.040-5.350-7.363-9.880-8.8100-4.7125Frequency (Hz)

On-Axis Attenuation

Avg: -6.1 dB

Sub Positions & Delays

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SubPositionDelayDelay ΔGain Δ
L3-18.47m10.23ms
+0.0ms
+0.0dB
L3-27.92m8.73ms
+0.0ms
+0.0dB
L3-37.38m7.40ms
+0.0ms
+0.0dB
L2-15.83m4.42ms
+0.0ms
+0.0dB
L2-25.28m3.58ms
+0.0ms
+0.0dB
L2-34.73m2.84ms
+0.0ms
+0.0dB
L1-13.19m1.26ms
+0.0ms
+0.0dB
L1-22.64m0.86ms
+0.0ms
+0.0dB
L1-32.09m0.54ms
+0.0ms
+0.0dB
C-10.55m0.04ms
+0.0ms
+0.0dB
C-20.00m0.00ms
+0.0ms
+0.0dB
C-3-0.55m0.04ms
+0.0ms
+0.0dB
R1-1-2.09m0.54ms
+0.0ms
+0.0dB
R1-2-2.64m0.86ms
+0.0ms
+0.0dB
R1-3-3.19m1.26ms
+0.0ms
+0.0dB
R2-1-4.73m2.84ms
+0.0ms
+0.0dB
R2-2-5.28m3.58ms
+0.0ms
+0.0dB
R2-3-5.83m4.42ms
+0.0ms
+0.0dB
R3-1-7.38m7.40ms
+0.0ms
+0.0dB
R3-2-7.92m8.73ms
+0.0ms
+0.0dB
R3-3-8.47m10.23ms
+0.0ms
+0.0dB

Stage Dimensions

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Width
m
Depth
m

Options

Units

Disclaimer

Your mileage may vary! While the underlying physics uses solid concepts of wave superposition and interference, several simplifying assumptions have been made. The model assumes free-field conditions and does not account for room reflections, ground coupling, temperature gradients, or detailed cabinet diffraction effects. That said, it should be good enough for practical use and will give you a solid starting point for real-world deployment.

L-Acoustics®, CODA Audio®, JBL®, and all product names are trademarks of their respective owners. These presets are included solely for modelling driver positioning, cabinet dimensions, and block spacing calculations. Port depth, size, positioning, tuning frequencies, and acoustic centre estimates are best guesses based on published specifications and are by no means accurate representations of the actual products. Always verify with manufacturer data and real-world measurements.