TRANSPARENT BY DESIGN

Privacy & your data.

Last updated: 17 October 2026. CarBoxLab is a free public beta operated by Sound Audio System. For privacy questions and account requests, contact Sound Audio System.

Using the calculator

Calculations run in your browser. You do not need an account. Choosing “Save JSON” downloads a file to your device; choosing “Save to account” sends your design to our server. No advertising or analytics tools are used in this release.

Creating an account

We store your email address, display name, registration date, a password hash, a hash of your recovery code, and any projects you choose to save. Email addresses are private and are not verified in this beta. We do not store passwords or recovery codes in readable form. Account data is used to provide the account and project storage service you request, and to secure that service. It is not used to send marketing.

Storage and security

Account and project data is stored on our SEOHOST server. The database is outside the public website directory. Private project access is checked against the signed-in account. We limit authentication attempts using short-lived hashed identifiers derived from connection addresses and account emails. Hosting infrastructure may also retain technical access and error logs for operation and security.

Essential cookies

Account features use a secure session cookie to keep you signed in and protect requests. Sessions expire after one hour of inactivity or 24 hours overall. The calculator itself does not need an account cookie. We do not use tracking cookies.

Retention, export and deletion

Your account library provides account and project export. Individual projects can be removed there. Closing an account disables access immediately and schedules its data for removal after 30 days; contact us during that period if you need to reverse the request. Hosting backup copies may remain until the hosting retention period expires. Contact us to request access, correction or erasure of personal data, or to raise a concern. You may also contact your local data protection authority.

Recovery and beta limitations

Save the private recovery code issued when you register. We cannot display it later. A successful password recovery replaces the previous code and invalidates earlier account sessions. Email-based recovery is not available yet. Keep local JSON copies of important designs. The beta models up to four identical drivers with sealed, round-port or approximate slot-port bass-reflex enclosures; simulations require practical verification before construction.

Sharing and external links

Projects are private in this release. No public forum or project sharing is enabled. Linked external websites have their own privacy practices.