Term-LAB | Term-PRO | dBDRA | Official Store

The official store for Wayne Harris Enterprises — the team behind Term-LAB, Term-PRO, and the dB Drag Racing Association. Engineered by Wayne Harris, inventor of the Term-LAB SPL meter and creator of the iconic Terminator competition vehicle — one of the most recognized builds in car audio history.

The Term-LAB Magnum is the most widely used SPL meter in competitive car audio, trusted by competitors, retailers, sanctioning bodies, and certified judges at sound-off events worldwide. Available in multiple configurations measuring up to 190+ dB with optional Power Probe for simultaneous amplifier power measurement.

Term-PRO is the professional standard for subwoofer enclosure design — used by car audio builders and competitors worldwide to model sealed, ported, and bandpass enclosures with precision. Features a 1000+ driver library, 3D rendering, vent design, wood design, hole placement, blueprints, and CNC export. Built to maximize SPL performance.

Direct-from-manufacturer for car audio shops, SPL competitors, event promoters, and sound-off judges worldwide. Digital delivery on all software and registrations. Hardware ships worldwide.

All software compatible with Windows 10 and Windows 11.

Term-LAB Magnum SPL Meters & Sensors

View all

Term-PRO Enclosure Design Software

Term-LAB & Term-PRO Software

dBDRA Event Registration & Memberships

Frequently Asked Questions

Do you ship the Term-LAB SPL Meter internationally?

Yes, we ship internationally on a daily basis!

To see your exact shipping options and carrier rates, simply add your desired items to your cart and proceed to checkout. Live shipping rates will be calculated automatically based on your global location.

Please note: As the buyer, you are responsible for any local customs, duties, or import taxes charged by your government upon the shipment's arrival.

If you have any specific technical questions about which Term-LAB system is right for your needs before ordering, just let us know. We are happy to help!

Quick Link to Term-LAB SPL Meter and Power Probe: Term-LAB SPL Meters

How will I receive my software purchase or maintenance renewal?

All software applications, maintenance renewals, and license upgrades are delivered digitally via email. You will receive an email containing your secure download link and registration/activation instructions. We process these orders manually and emails are typically sent within a few hours of purchase, during regular business hours Monday - Friday / 9am-5pm.

Is Term-LAB and Term-PRO software compatible with Windows 10 and 11?

Yes. Both Term-LAB and Term-PRO software applications are fully optimized and compatible with modern Windows operating systems, including both Windows 10 and Windows 11.

I own a Term-LAB Rebel system. Can I upgrade it to the current Magnum edition?

Yes! You can transform your Term-LAB Rebel Edition (4-port model only) into the powerful Term-LAB Magnum Edition with the Rebel to Magnum software upgrade.

Digital Delivery: No physical items will be shipped. Please allow up to 24 hours for processing. Upgrade instructions will be sent via email—be sure to check your inbox and spam folder.

Term-LAB Rebel to Magnum Upgrade