Subwoofer Calculator
AV KART TOOLS
Subwoofer Requirement Calculator
Subwoofer sizing made practical. Get a recommendation, or check if your current sub is adequate. Optional specs increase accuracy and confidence.
Anti-hawa tool
Paths + Check
Inputs
Start with room type. If you choose media/living room, layout openness will appear.
Dedicated rooms are assumed enclosed. Media/living rooms may be enclosed or open.
Room size feet
Multiple seats usually means multiple subs for smoother bass, not just louder bass.
Entry-level subs are often designed for 30 to 35 Hz performance. That is normal and useful.
Layman-friendly. Internally, this increases headroom requirement.
Optional. If unknown, the tool stays useful, but confidence is lower.
Results
We separate two goals: headroom (how loud and deep) and smoothness (how even across seats).
Target depth
- Hz
Room demand
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Likely best fit
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Recommended paths (pick one)
Path A
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Path B
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Path C
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Note: 2 powerful subs can match or beat 4 weaker subs on headroom. 4 subs usually wins on seat-to-seat smoothness if placement and calibration are done right.
Confidence (honest)
What
Result
Confidence
Why (logic)
Extension target
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-%
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Headroom need
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-%
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Smoothness need
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-%
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Check my sub
Switch mode
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Switch to Check mode to see pass/borderline/fail.
This tool does not pretend watts equal output. Confidence increases when you provide measured data (max SPL at low frequencies).