Observed arrival · 2026-10-15

Sub Box Calculator

subboxcalculator.com Visit website

Editorial interest 79/100 Selection signal · not a rating of the site

A free browser-based tool for designing sealed or ported subwoofer boxes and producing build plans.

Landing page captured for the 2026-10-15 issue.

For: DIY subwoofer and car-audio builders
Worth noticing: The built-in driver database lists about 2,000 models, and the interface is offered in English, Portuguese, Spanish, and Russian.

Field notes

The page lays out a workflow from driver selection or manual parameter entry through enclosure choice and available-space input. It says users can compare up to three variants, and the sample designs show both sealed and ported boxes with dimensions; the listed exports include DXF files for CNC routers.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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